pressure relief solutions - elfab · disc to rupture at an exact and predictable pressure, and...

Pressure Relief SolutionsRupture Discs | Explosion Vents | Detection

www.elfab.com

Images L-R top-row: Opti-Gard™, Opti-Gard™ SoLo (top) & Mill-Gard (bottom), Opti-Gard™ & HolderL-R bottom-row: Flo-Tel+™, Opti-Gard™ Ferrule, Safe-Gard

13951 Elfab_810x1140mm PRINT 27.06.18.indd 1 27/06/2018 17:20





Company Profile 3

Reverse Acting Discs Opti-Gard™ 6Opti-Gard™ SoLo 7Milli-Gard 8

Forward Acting DiscsSafe-Gard 9Flat Composite 10Domed Composite 11Conventional Domed 12

Graphite Disc Universal Arma-Gard™ 13

Hygienic DiscsOpti-Gard™ Ferrule / Opti-Gard™ Ferrule SoLo 14

Rail Car DiscsTank-Safe 15Intermodal Container Disc 16

Rupture Disc Holders 17

Rupture Disc Burst DetectionFlo-Tel™ 18Flo-Tel XD 19Wireless Flo-Tel™ 20

Rupture Disc Accessories 21

Explosion VentsSingle-Skinned Flat / Domed 22Multi-Layered Flat / Domed 23Ribbed 24Lift-Gard 25Thermal Explosion Vent 26Hygienic Explosion Vent 27

Explosion Vent Burst DetectionVent-Tel 28

OEM & Rupture Disc Plugs 29

Quality Certificates & Approvals 30ElfabTech 31Elfab Training and Seminars 32Explosion Vent Comparison Table 33Rupture Disc Comparison Table 34

Contents

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www.elfab.com

Company Profile Manufacturing ExcellenceAbout Elfab

Leading the industry in pressure management innovation

As a global manufacturer of rupture discs, explosion vents and associated detection systems, Elfab’s intelligent pressure relief systems protect people, plant, processes and the environment across the globe. With the most technically advanced products on the market Elfab delivers unique design, testing and consultancy services for pressure management.

Elfab Limited is a British company owned by Halma plc since 1993. Halma has grown to be an established FTSE 100 business and currently comprises over 50+ subsidiary companies operating worldwide.

Products

Rupture Discs

Elfab has a wide variety of rupture discs offering some of the highest performance specifications on the market for a variety of applications and industries. Excellently manufactured for an accurate burst control, Elfab’s reverse rupture disc range is capable of operating at up to 95% of rated burst pressure with an industry leading 3% tolerance.

OEM & Rupture Disc Plugs

Elfab’s expertise in developing custom engineered solutions has been applied in a diverse range of industries. Working to the highest possible standards, our unique design for manufacture approach allows us to tailor our products to meet the requirements of individual projects. Elfab has built up significant experience in the design and manufacture of plugs, unions and other small disc assemblies, producing a wide range of variations to supply a diverse customer base.

Explosion Vents

Elfab’s full opening, non-fragmenting explosion vents are used to protect against the hazards of dust explosions within a wide range of applications, including silos, bucket elevators, and gas engine and turbine exhausts. An extensive range of sizes, shapes and configurations is available depending on the specific application requirements, from a cost-effective single-skinned design, to a more robust multi-layered solution. Both flat and domed designs are offered, covering an extensive range of burst pressures.

Holders & Accessories

Elfab manufactures rupture disc holders to suit industry standard flange specifications, as well as a range of accessories to ensure the correct performance of our rupture discs.

Sensors & Detection

Without suitable burst detection systems in place companies face a number of environmental, health & safety and cost risks. With increases in environmental concerns and the push towards zero emissions, companies cannot run the risk of operating their plants without suitable detection systems in place. Elfab has a range of ATEX and IECEx approved detection systems designed to meet customer and plant infrastructure requirements.

Manufacturing Facilities

Elfab’s state of the art manufacturing facility is based in North East England. It is accredited in accordance with Quality Management System ISO9001, Environmental Management System ISO 14001 and Health and Safety accreditation OHSAS 18001. In addition, a selection of Elfab products conform to ATEX, IECEx, ASME, CU TR 032, PED, TUV and SQL. Please contact us for details on individual product approvals.

Custom Engineered Solutions

Elfab leads the industry in providing electron beam welding capability that produces the highest integrity joint possible, meeting required specifications, reducing the risk of leakage problems and preventing premature failure. Elfab ensures all welded products are tested for leaks up to 10-8cc/sec. Uniquely, this process removes issues or variability found in many other welding processes. This enables Elfab to produce bursting discs with advanced tolerances of +/- 3%.

Our custom engineered solutions provide exceptional leak tightness, excellent operational performance and ease of installation.

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Elfab Pressure Relief Solutions www.elfab.com

Cell Based Manufacturing

Many of Elfab’s rupture discs incorporate a score line. The score line provides the critical point of engineered weakness that enables each disc to rupture at an exact and predictable pressure, and therefore has to be produced to extremely accurate tolerances. The servo press systems are used to form the score lines in each rupture disc using specially developed tooling. This, in combination with elements of Elfab’s unique cell based manufacturing process, allows +/- 3% to be standard on reverse acting discs.

Cell based manufacturing helps to reduce set up times, enable improved levels of precision, repeatability and traceability.

Testing and Inspection Facilities

Elfab has on site state of the art testing and inspection facilities. The in-house sample preparation, inspection and testing lab typically enables individual disc samples to be produced in less than 10 minutes. Elfab fully tests and inspects all discs prior to installation, reducing customers’ test schedules and delivering long term reliability. High-end inspection and analysis software allows for detailed visual examination of bursting disc assemblies to check that no defects exist. Using its custom-built rig, Elfab can carry out helium leak testing of bursting disc assemblies, to better than 10-8cc/sec.

Using specialist equipment, even the most delicate disc assembly can be analysed.

Automation Lines

Elfab is able to produce a vast range of OEM assemblies with their automation lines. The fully automatic machine is capable of rapidly producing large volumes of capped assemblies in a wide variety of sizes, designs and burst pressures. With unique in-house CAD design capabilities Elfab is able to produce a wide range of customer specific designs to meet exact requirements. The automation line manages the entire process from foil through to packing, ready for shipment.

Elfab is positioned to more efficiently and competitively meet customer requirements, offering cost effective solutions with greater flexibility, responsiveness and faster delivery times.

Opti-Gard™ (OPR/OPK) – Reverse ActingHigh performance reverse acting rupture disc

• 95% operating to burst pressure ratio*

• 3% performance tolerance

• Full vacuum capability as standard

• Peripherally scored on the vent-side for accurate burst control

• Single disc solution across a wide range of sizes & burst pressures

• Highest performance characteristics for liquid, gas or vapour

• Tested to over 1 million cycles

• 3 year warranty

• Non-invasive Flo-Tel™ detection as standard

*97% operating ratio may be available under certain operating conditions. Please contact your Elfab sales representative for further details or to request a quote

Specification

Size Range 25mm to 600mm (1” to 24”)

Burst Pressure Range 0.35 barg to 70 barg (5 psig to 1015 psig)

Temperature Range See website for details

Maximum Operating Ratio 95% of minimum burst pressure (92% of nominal burst pressure)

Fragmentation on Burst Non-fragmenting design

Relief Valve Isolation Excellent

Vacuum Service Full Vacuum

Fluid Compatibility Liquid, Gas or Vapour

KR Values 1.74

Torque Sensitive No

Cycle Life* Tested to over 100,000 pressure vacuum cycles*

Material Range Hastelloy as standard. Others available

Reversal Ratio N/A with offset tag + system-loc

Damage Ratio <1 (Fail Safe)

Leak Tightness Excellent

Performance Tolerance +/- 3% (zero manufacturing design range)

Protective Linings Available on vent side

Disc Surface Finish N/A

* from full vacuum to 95% of the minimum burst pressure..

Related Products

Reverse HolderFlo-Tel™ Detection

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Opti-Gard™ SoLo (OPS) – Reverse ActingThe most technically advanced low pressure rupture disc

• 95% operating to burst pressure ratio


• Single rupture disc solution across a wide range of sizes and burst pressures

• Designed for low pressure applications from 2Psig

• Suitable for liquid, gas and vapour applications

• Patented geometric shape

• Tested to over 1 million cycles

• Non-fragmenting rupture disc design

• 3 year warranty

• Non-invasive Flo-Tel™ detection as standard

Specification


Burst Pressure Range 0.14 barg to 4.14 barg (2 psig to 60 psig)







KR Values 0.8

Torque Sensitive No

Cycle Life* Tested to over 1 million pressure vacuum cycles*

Material Range Hastelloy as standard. Others available

Reversal Ratio N/A with offset tag + system-loc

Damage Ratio Fail Safe



Protective Linings N/A


* from full vacuum to 95% of the minimum burst pressure.

Related Products


Milli-Gard (MIL) – Reverse ActingUltra low pressure reverse acting disc

• Operating ratio up to 60%

• Ideal for the relief of vacuum and over pressure situations

• Reverse disc design

• Suitable for ultra-low pressures

• Non-invasive Flo-Tel detection as standard

Specification


Burst Pressure Range 3 mbarg to 500 mbarg




Relief Valve Isolation Suitable


Fluid Compatibility Gas or Vapour

KR Values N/A

Torque Sensitive No

Cycle Life Good

Material Range Stainless Steel as standard. Others available

Reversal Ratio N/A With Standard Holder

Damage Ratio <1 Fail Safe

Leak Tightness Good




Related Products


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Safe-Gard (SGD) – Forward ActingCross scored on the vent side for increased safety

• Advanced tension-loaded rupture disc

• Precision cross scoring on the vent side for accurate burst control


• Ideal for a wide range of burst pressures and sizes

• Smooth operating surface

• Ideal for relief valve isolation


Specification

Size Range 15mm to 500mm (1/2” to 20”)

Burst Pressure Range 2.1 barg to 185 barg (30 Psig to 2683 Psig)







KR Values 0.68

Torque Sensitive No

Cycle Life Very Good

Material Range Stainless Steel as Standard. Others Available.

Reversal Ratio <1 Fail Safe




Protective Linings Available


Related Products

Forward HolderFlo-Tel™ Detection

Flat Composite (FCD) – Forward ActingEconomic solution for very low pressure applications

• Composite design with a unique tri-membrane construction

• Enhanced protection, reliability and leak tightness

• Various slotting arrangements available to meet the specific application requirements

• Widest size range of any product type


Specification


Burst Pressure Range 0.07 barg to 3.5 barg (1 Psig to 50 Psig)




Relief Valve Isolation Suitable

Vacuum Service Back pressure support required


KR Values 3.94

Torque Sensitive No

Cycle Life Poor


Reversal Ratio <1 (Fail Safe) Dependent on Back Pressure Support


Leak Tightness Good


Protective Linings Not Available


Related Products


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Domed Composite (DCD) – Forward ActingUnique construction for enhanced protection

• Composite design with a tri-membrane construction

• 85% Operating Ratio

• Widest size range of any Elfab product type


Specification






Relief Valve Isolation Good

Vacuum Service Back pressure support required


KR Values Not available

Torque Sensitive No

Cycle Life Good




Leak Tightness Good




Related Products


Conventional Domed (CDD) – Forward Acting Forward acting rupture disc suitable for a wide range of applications

• Can be used in a wide range of operating environments offering an economic solution to many applications

• Available in a wide range of materials and sizes

• Suitable for very high pressure applications

• Widest size range of any Elfab rupture disc product type


• Various slotting arrangements available to meet the specific applications requirements

• Widest size range of any product type

Specification

Size Range 3mm to 800mm (1/8” to 32”)



Maximum Operating Ratio85% of minimum burst pressure (81% of nominal burst pressure)

Fragmentation on Burst May Fragment

Relief Valve Isolation Not Recommended

Vacuum Service No support required above burst pressure of 30 barg


KR Values 1.4 (no support)

Torque Sensitive No

Cycle Life Excellent






Protective Linings Available


Related Products


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Universal Arma-Gard™ (AGS) - GraphiteOvercomes problems associated with damage of traditional graphite discs caused by poor storage, handling and installation practice

• Installed directly between flanges

• Not adversely affected by misaligned pipework

• A steel armoured ring protects the graphite rupture disc element

• Eliminates the possibility of side wall bursts

• Non-torque sensitive

• Low pressure capability

• Excellent corrosion resistance


Specification


Burst Pressure Range 0.07 barg to 55 barg (1 psig to 798 psig)


Maximum Operating Ratio85% of minimum burst pressure (76.5% of nominal burst pressure)

Fragmentation on Burst Fragmenting

Relief Valve Isolation No

Vacuum Service Support Not Required Above 1.7 barg (24.6 psig)


KR Values 0.6 (no support)

Torque Sensitive No

Cycle Life Average

Material Range Graphite

Reversal Ratio N/A


Leak Tightness Average


Protective Linings Available on Both Faces


Related Products

Test-Tel™Flo-Tel™ Detection

Opti-Gard™ Ferrule (OPF) / SoLo (Low Pressures) – Hygienic applications High technical solution for aseptic and hygienic applications



• Peripherally scored for accurate burst control

• Designed with a smooth, uninterrupted surface finish to meet FDA approvals

• Suitable for use with tri-clamps / ferrules / NA-connect

• Ideal for CIP and SIP applications


• NA Connect compatible

Specification


Burst Pressure RangeFerrule: 0.9 barg to 20.7 barg (13 Psig to 300 Psig)SoLo: 0.35 barg to 5.2 barg (5 Psig to 75 Psig)


Maximum Operating Ratio95% of minimum burst pressure (92% of nominal burst pressure)



Vacuum Service Full vacuum


KR Values N/A

Torque Sensitive N/A

Cycle Life Tested to over 100,000 pressure-vacuum cycles

Material Range Stainless Steel as standard. Others available

Reversal Ratio Arrow on offset tag






Related Products

Tri-Clamp and FerrulesFlo-Tel™ Detection

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Tank-Safe (TSD/TSF) – Rail Car / Holderless Design Designed for use on intermodal tank containers to meet the requirements of the various international standards relating to transportation of dangerous goods

• Composite construction and does not require a holder

• Mounted directly below the relief valve

• Easy installation directly between flanges

• Construction comprises of three main components: a slotted top section, seal membrane and vacuum support

• Full bore relief

• Disc sizes available to fit all intermodal tank sizes

• Can be fully lined on the process side to eliminate contact with the product

Specification

Size Range 50mm, 65mm and 80mm (2”,2½ “ and 3”)*

Burst Pressure Range 3.75 barg to 4.4 barg (54.4 psig 50 63.8 psig)



Fragmentation on Burst None fragmenting design




KR Values Not Available

Torque Sensitive No

Cycle Life Very Good

Material Range Stainless Steel as Standard. Others Available

Reversal Ratio Dependent on Back Pressure Support

Damage Ratio <1 (fail safe)

Leak Tightness Good




Intermodal Container Disc (ICD) – Rail Car / Holderless DesignDesigned specifically for applications needing a reliable overpressure solution as protection during the transportation of liquid or gas

• Solid metal construction

• Up to 90% operating to burst pressure ratio combined with ±5% burst tolerance

• Complete with inlet and outlet gasket

• Non-fragmenting design - suitable for relief valve isolation

• Full bore relief

• Withstands full vacuum without a vacuum support

• Self-aligning fail-safe installation

• Designed to install directly between industry standard flange fittings

• Supplied as standard with laser-etched stainless steel tag for full traceability

• Available in a range of standard sizes, pressures and materials

• Can be fully lined on the process side to eliminate contact with the product

• Meets all the international requirements for the transportation of dangerous goods

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Rupture Disc Holders Elfab manufactures a range of holders specifically designed to support the installation of our technically advanced rupture discs and detection systems.

Ensures correct performance and installation of Elfab’s rupture disc range for industry standard flange specifications.

• High levels of corrosion resistance

• Superior leak tightness

• Produced to suit all internationally recognised flange standards

• Assured alignment via locations between flange bolts

• Available in a wide range of materials

• Bolted/pre-torque/slimline holders available on request

• Multi-Flange designs

Ensures correct installation of holder without drilling flanges

Related Products

System Loc+

Flo-Tel™ – Rupture Disc Burst DetectionNon-invasive ATEX approved reusable burst detection

Flo-Tel is a fail-safe and intrinsically safe detection system providing an excellent solution for identifying when a rupture disc functions within arduous operating conditions.

Operating on simple reed switch and magnet technology, Flo-Tel™ is designed to offer a practical solution for rupture disc detection needs. The sensor is fitted into the holder with a magnet on the rupture disc. When the rupture disc bursts; the rupture disc with its magnet arc away from the sensor, giving an open circuit signal. After rupturing, the disc is the only element that needs replacing, eliminating expensive rewiring costs.

• ATEX and IECEx approved ExII 1GD EEx ia IIC

• Sensor is not in contact with the process therefore there are no potential leak paths

• Non-invasive design, therefore not affected by downstream pressure fluctuations or corrosion

• IP 66 rated

Related Products

Test-Tel™ Opti-Gard™Rupture Disc Holders

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Flo-Tel XD – Rupture Disc Burst DetectionNon-invasive, fail safe burst detection

Flo-Tel XD is a first Exd approved non-invasive fail safe detection system, providing an excellent solution for identifying when a rupture disc functions within arduous operating conditions.

Once installed, this detection system requires no further electrical maintenance. After rupturing, the disc is the only element to be replaced, eliminating expensive re-wiring costs. Failsafe checks may be carried out by non-electrically trained fitters using Elfab’s unique Test-Tel unit.

Operating on simple reed switch and magnet technology, Flo-Tel XD is designed to offer a practical solution for rupture disc detection needs. The sensor is fitted into a holder with a magnet on the rupture disc. When the rupture disc bursts; the rupture disc with its magnet arc away from the sensor, giving an open circuit signal. After rupturing, the disc is the only element that needs replacing.

• ATEX and IECEx certification

• Sensor is not in contact with the process therefore there are no potential leak paths

• Non-invasive design, therefore not affected by downstream pressure fluctuations or corrosion

• IP 67 rated

• Available in Stainless Steel for Marine Applications

• Offers a significant advantage in that it can be installed utilising the protection concepts Exd, Exi and Ext, meaning it is extremely versatile and can be used in Zones 0, 1 and 2, subject to the Ex concept chosen

Related Products

Test-Tel™Rupture Disc Holders

Wireless Flo-Tel™Wireless rupture disc burst detection

Industry first WirelessHART™ burst detection system

Elfab offers a burst detection system compatible with WirelessHART™ gateways and transmitters. Wireless Flo-Tel combines Elfab’s industry leading burst detection system with the latest WirelessHART technology. Wireless Flo-Tel provides a reliable solution to notify when a rupture disc bursts without the need for time consuming and expensive wiring in ATEX zones.

Flo-Tel technology has been proven in a wide range of industry sectors with varied applications to provide a failsafe detection solution for over 20 years. By incorporating this ATEX-approved, non-invasive solution into a WirelessHART network it further enhances the benefits of this product. Wireless Flo-Tel offers significant cost-savings over traditional burst detection systems.

Easily integrated into existing Emerson systems

Sites already operating Emerson WirelessHART technology have the added benefit of being able to integrate Elfab’s rupture disc and detection solutions into their established network, further reducing costs and system complexity.

Emerson’s Smart Wireless Gateway provides industry leading security, scalability and data reliability. Layered security ensures that the network stays protected and additional devices can be added at any time making the process of upgrading from traditional burst detectors to a wireless solution a relatively simple and low cost process.

Unique features and benefits

• Significant cost savings over traditional burst detectors

• Non-invasive, fail-safe solution

• Eliminates the need for wiring

• Rapid notification of disc burst

• Can be integrated into existing WirelessHART networks

• Compatible with Elfab’s full range of Flo-Tel detection systems

• ATEX-approved

Related Products

Opti-Gard™Flo-Tel™ Detection

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Rupture Disc Accessories

Test-Tel™ The Test-Tel™ installation aid is designed to confirm correct disc and Flo-Tel installation to improve fitting and maintenance schedules. Test-Tel is a low cost portable tool for a ‘right first time’ approach to rupture disc installation.

• Eliminates the risk of badly fitted rupture discs

• Prevents wrongly wired detection

• Reduces down time costs

• Simple to use

• Checks disc and Flo-Tel status

Excess Flow ValveExcess flow valves are designed for use with double rupture disc or rupture disc and relief valve combinations. Elfab’s Excess Flow Valves provide the essential facility for preventing unacceptable build-up of pressure in the space between the safety valve and the rupture disc.

• Robust stainless steel construction

• Rapid shut off

• Pressure gauges are sold separately

Tri-Clamps & FerrulesTo support rationalisation within your supply chain, Elfab can supply the supporting Tri-Clamps and Ferrules to ensure correct installation. These are uniquely designed for easy installation of Elfab’s non-invasive Flo-Tel detection system.

Single Skinned Explosion Vents

Flat Cost-effective explosion venting protection to suit a wide range of process conditions

Elfab’s single-skinned explosion vents are available in either flat or domed construction dependent on vacuum requirements. They are a cost effective solution for a wide range of applications. The flat non-fragmenting design is suitable where a low profile solution offers an advantage to the silo construction. Elfab offers its Single Skinned Explosion Panels in either a square or rectangular design.

• Lowest profile possible

• Resistant to abrasion, corrosion and moisture

• Maintenance free

• Dust tight seal

• Optional integral or retro-fittable Vent-Tel burst detection system

• For low vacuum, low temperature applications

DomedHigh performance, cost-effective explosion venting solution to suit medium vacuum conditions

Elfab’s bursting panel range is enhanced by the introduction of this efficient domed-design Single-Skinned Explosion Venting panel, combining a unique 70% operating ratio with high stability for applications requiring a medium level of vacuum resistance (up to 75% of the minimum burst pressure).

• High stability and medium vacuum support

• Resistant to abrasion, corrosion and moisture


• Dust tight seal


• For medium vacuum, low temperature applications

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Multi-Layered ExplosionVents

Flat Robust flat explosion venting panel for excellent service life

Elfab’s Multi-Layered bursting panel is available in either flat or domed dependent on service life and vacuum conditions. It combines stainless steel and fluoropolymer to create a high performance explosion venting solution.

Elfab offers its flat Multi-Layered Explosion Vents in a square, rectangular, round or trapezoid construction with a wide range of bolt pattern configurations. Offering a low maintenance solution with a dust tight seal and excellent corrosion resistance, this flat non-fragmenting design is now a widely used explosion protection solution for limited vacuum applications.

Domed Excellent service life for processes with medium vacuum and back pressure conditions

Elfab’s domed design Multi-Layered Explosion Vent brings the additional benefit of enhanced operating performance under cyclic pressure, back pressure and vacuum conditions. With the highest Operating Ratio across the Elfab explosion panel range of 80%, this distinctive bursting panel allows for enhanced cycling characteristics.

• Full vacuum and back pressure capability

• Enhanced cycling characteristics

• Low installation costs


• Non-fragmenting design

• Fail-safe rapid full venting

• High temperature capability


• Dust tight seal


• For medium vacuum and spares applications

This unique range of non-fragmenting bursting panels is available with a standard burst pressure of 0.05 or 0.1 BarG @15/30C with a 25% tolerance. Elfab’s multi-layered design venting panels are suitable for use in high temperature conditions.

• Suitable for high temperatures




• Non-fragmenting design


• Dust tight seal


• For low vacuum and spares applications

Ribbed Explosion Vent Economical space-saving single-layer explosion panel suitable for low to medium vacuum applications

Dusty conditions commonly associated with the storage and handling of grains and powders can potentially lead to dangerous explosions. The robust construction of Elfab’s Ribbed design explosion vent ensures operational excellence even when low to medium levels of vacuum are present.

The Ribbed Explosion Vent is maintenance free and a non-torque dependent product, ensuring ease and speed of installation. This, combined with the low storage costs of the design, ensures it is one of the most cost effective explosion bursting panels available.

• Withstands low levels of vacuum without additional support

• Ribbed construction ensures robust, reliable performance





• Dust tight seal

Specification

Size Range See website for details

Vent Area 0.14 m2 to 1.25 m2 (1.51 ft2 to 13.46 ft2)

Temperature Range -40°C/80° as standard

Operating Ratio 60%

Tolerance +/-25%

Burst Pressure Range 0.05 barg to 0.49barg

Standard Burst Pressure Offering

0.1barg @ 15/30°C

Level of vacuum capability Up to 40% of Minimum Burst Pressure

Torque Dependent (Y/N) N

Vent-Tel Detection Optional

Optional Accessories Frame, Gasket

Shape Designs Rectangular, Square

Materials Stainless Steel as standard

*Higher temperatures available on request

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Lift-Gard – Explosion VentThe only flat explosion venting panel that combines an integral frame with an ATEX-approved burst detection system in one

Elfab’s explosion venting panels are designed to open at pre-determined burst pressures to protect the severity of these explosions. Elfab’s Lift-Gard panel characteristics and construction ensures operational excellence even for demanding applications where vibrations or harsh conditions could be a concern.

Lift-Gard is a low cost, maintenance free solution designed specifically to protect Vertical Bucket Elevators from potentially harmful explosions. With a non-fragmenting design, this allows for a full opening of the venting panel in the event of an explosion, ensuring maximum safety.

Elfab’s Lift-Gard has an integral outer frame, making it a reliable and cost-effective solution that is easy to install.

• Integral ATEX-approved Vent-Tel detection device for immediate shut-down EXII 1GD EEx ia IIC

• EC-Type Examination Certificate ITS03 ATEX 11359



• Fail-safe explosion

• Specifically designed to meet regulations within the Bucket Elevator industry

Specification



Temperature Range -40°C/80° as standard

Operating Ratio 50%

Tolerance +/-25%

Burst Pressure Range 0.05 barg to 0.49barg


0.1barg @ 15/30°C

Level of vacuum capability Limited Vacuum


Vent-Tel Detection Optional (Recommended)

Optional Accessories Gasket




Specification

CapabilityThermal Explosion Vent (Flat & Domed Variants with Integral Thermal Insulation)


Vent Area0.01 m2 to 1.18 m2 (Rectangular) 0.05 m2 to 1.13 m2 (Round)

Temperature Range -40°c/600°c as standard*

Operating Ratio 60%

Tolerance +/-25%

Burst Pressure Range 0.05barg to 0.49barg


0.1barg @ 15/30°C

Level of vacuum capability Limited (Flat) – Full Vacuum (Domed)**


Vent-Tel Detection Optional, temp dependent


Shape DesignsRound, Rectangular, Square – Flat & Domed construc-tions available

MaterialsStainless Steel as standard. For higher temperatures other metals may be required.

*Higher temperatures available on request **Higher available if supplied with implosion bars

Thermal Explosion VentA cost-effective solution for customers operating at high temperatures, the Thermal Explosion Vent offers superior explosion venting characteristics while preventing expensive energy and heat loss.

The Vent combines a solid thermal insulator of low density silica within a stainless-steel explosion panel construction and is suitable for use on processes with temperatures up to 600ºc. The Thermal Explosion Vent is available in either a square, round or rectangular design in either flat or domed constructions ensuring relief area requirements are met in a wide variety of high temperature applications.

• Integral insulation

• Suitable for temperatures up to 600ºc


• Dust tight seal

• Not susceptible to condensation or product build up

• Vent-Tel burst detection system available for most applications

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Specification



Temperature Range Specific to Panel Design

Operating Ratio Specific to Panel Design

Tolerance +/-25%

Burst Pressure Range 0.05barg to 0.49barg


0.1barg @ 15/30°C

Level of vacuum capability Specific to Panel Design


Vent-Tel Detection Optional





Hygienic Explosion VentUniquely designed explosion panel suitable for food and pharmaceutical applications

The specially designed construction of the Hygienic Explosion Vent maintains operational excellence within stringently sterile environments. The smooth finish and crevice-free design eliminates residue and bacteria build up.



• Dust tight seal


Explosion Vent Burst Detection

Vent-Tel Burst Detection Vent-Tel is Elfab’s ATEX-approved, non-invasive, fail safe, explosion vent burst detection system providing an excellent solution for identifying when an explosion panel has functioned. Operating on a simple reed switch and magnet technology, Vent-Tel is designed to offer a practical solution for explosion vent burst detection, which can trigger a safe and rapid shut-down of the process.

Vent-Tel can be retrofitted to Elfab’s range of explosion vents.

Other accessories are available on request, such as frames and gaskets.

Customised InnovationTo meet customer specific requirements, Elfab works closely to develop the ideal explosion protection solution for unique applications.

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OEM, Rupture Disc Plugs & Injection Moulding Stems Rupture discs working to a unique design for manufacture approach

Elfab’s expertise in developing custom engineered solutions has been applied to a diverse range of industries. Working to the highest possible standards our unique design for manufacture approach allows us to tailor our products to meet the requirements of individual projects. Benefiting from in-house electron beam welding capability and automated assembly lines, Elfab can offer a wide range of products with some of the best lead times in the industry.

From complex one-off units to high volume price sensitive applications, Elfab can manufacture a solution to meet your requirements.

Areas in which we specialise:

Aerospace and DefenceMedicalAutomationPower Generation and UtilitiesSolids and Bulk HandlingGas and Liquid HandlingIndustrial Applications

Quality Certificates & ApprovalsQuality Management Systems

ISO /TS 29001:2010 Lloyd’s Register Quality AssuranceISO 9001:2008 Lloyd’s Register Quality Assurance AD2000-Merkblatt HP0/EN729-3 TUV (Germany) ASME UD Certificate of Authorization and Associated National Board CertificateSafety Quality Licence Certificate, People’s Republic of China

Health, Safety and Environmental

ISO 14001:2015 Lloyd’s Register Quality AssuranceOHSAS 18001: 2007 Lloyd’s Register Quality Assurance

CU TR 32 Certificate of Conformity - EAC

CU TR 012 Certificate of Conformity - EAC

EC Certificate of Conformity

European Directives: Lloyds Register Pressure Equipment Directive

ATEX Directive 94/9/EC

ATEX QAN Quality Assurance NotificationIntegral Flo-Tel+ Rupture Disc DetectorFlo-Tel XD Rupture Disc DetectorFlo-Tel XD Rupture Disc DetectorPosi-Gard/Vac-Gard Integral Flo-Tel Rupture Disc DetectorExplosion Vent and Explosion Vent DetectorBio-Tel Rupture Disc DetectorBurst-Tel Rupture Disc DetectorTest-Tel Disc Installation AidOE-Tel Burst Detector

IECEx Certificate of Conformity

Integral Flo-Tel+ Rupture Disc DetectorIntegral Flo-Tel XD Rupture Disc DetectorPosi-Gard/Vac-Gard Integral Flo-TelIntegral Flo-Tel XD Rupture Disc Detector

Safety Integrity Level (SIL)

Forward Acting Rupture DiscsReverse Acting Rupture DiscsBurst Tel and Bio-Tel Rupture Disc DetectorFlo-Tel+, PGFT and VGFT DetectorIntegral Flo-Tel XD Rupture Disc Detector

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Elfab Training and Seminars With over 80 years manufacturing experience, Elfab are industry leaders when it comes to technical expertise.

Elfab’s training and technical seminars are designed to share this expertise with our customers. Available at the Elfab site or your offices, the sessions are tailor made to best suit your specific requirements.

Hosted by a trained and highly skilled Applications Engineer, our seminars are of particular interest to project, process, safety and maintenance engineers.

Our informative and interactive seminars provide a wealth of information about our products including:

• Rupture disc and burst detection selection

• Installation methods

• Sizing calculations

• Stock rationalisation

• Quality standards

To request more information about Elfab’s Seminars, or to arrange for one of our highly qualified application engineers to visit your company; please do not hesitate to contact us.

Email: [email protected] Telephone: +44 (191) 293 1234

www.elfab.com

ElfabTech.com

Engineering/Technical information at the touch of a buttonElfab’s enhanced engineering portal, ElfabTech, is an effective web tool to enable accurate rupture disc and explosion vent sizing and specifications while helping to reduce order process time as well as offering additional resources to support Design Engineers and Buyers across the globe.

Online spares ordering for pressure relief products including:

• Rupture Discs • Detection Systems

• Explosion Vents • OEMs

Users can sign-up for free and gain access to high-level engineering calculations to support with the design process and validate critical calculations. ElfabTech also has the capability of allowing a customer to track their order along its journey through the Elfab Factory and the ability to track when despatched goods are expected to arrive. A host of media files including presentations and videos are also accessible through ElfabTech; for ongoing support and internal training.

Engineering Benefits:

• Sizing calculators

• Rupture disc sizing calculations to API + ISO

• Two phase rupture disc sizing calculations

• Explosion vent sizing to BS EN/NFPA

• Process medium and material compatibility check with NACE tables

Request Quote/Place Order:

• Request a quotation for spare parts online, saving valuable procurement time

• Place order online at click of a button; reducing order process time

• Simple and free to use

• Improved operational efficiency reducing the lengthy quotation/order process

Manufacturing/Delivery Tracking:

• Track your order though the Elfab Factory from production to shipment

• Follow your consignment once shipped

• Track when goods are expected to arrive globally

Host of media files available:

• Access to installation videos and presentations

• Quality certification downloads

• FAQs

To benefit from all these features and much more, become an ElfabTech member today:

www.elfabtech.com

Register for FREE

31 32


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33 34


pressure relief solutions - elfab · disc to rupture at an exact and predictable pressure, and...

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