pressure regulators - norval 608 - pietro fiorentini - …...>pressure regulators ac5 ac10 db 340...

PressureRegulators

Pressure regulators>

Introduction

NORVAL 608 pressure regulators are direct acting devices for low and medium pressure applications controlled by a diaphragm and

counter spring.

These regulators are suitable for use with previously filtered, non corrosive gases.

Norval 608

Fig.1

Norval 608 silencedversion (optional)

Norval 608 stroke indicator version (optional)

>

Materials

BodyHead coversDiaphgram Valve seatSeals

Spheroidal ductile iron GS 400-18 ISO 1083 Drop-forged carbon steelRubberized canvasAlluminiumNitril rubber

Main Features

- Design pressure: up to 6 bar (87 Psi)

- Design temperature: -20 °C to +60 °C (-4 to + 140 °F)

- Ambient temperature: -20 °C to +60 °C (-4 to + 140 °F)

- Max inlet pressure bpe: 6 bar (87 Psi)

- Outlet pressure range of Wh: 15 to 200 mbar (6"w.c. to 2,9 psig)

- Accuracy class AC: up to 5

- Closing pressure class SG: up to 10

- Available size DN: 2” - 3”

- Flanging: class 125FF and 150 RF according to ANSI B16.42 and PN16 according to ISO 7005.

DesignedWith YourNeeds In Mind

- Compact Design - High Turn Down Ratio- Easy Maintenance - High Accuracy- Top Entry - Low Operation Cost- Fast Response Time - Wide Range of Applications

By the implementation of a dynamic control system for the valve position, regulator Norval 608 is available also in version: “IncreasedCapacity”, characterized by a dynamic booster located at the bottom of the control system.The IC-Version Regulator has a capacity even double if compared with standard version, without any impact on regulation accuracy or on reaction time.It is possible to convert an already-installed Norval 608 regulator into a Norval 608 IC with monitor option, using a proper IC transformation KIT.

Norval 608 IC - Increased capacity

Norval 608 IC

>Main Features

Modular design of pressure regulator Norval 608 allows application of slam shut or device for use as “in line monitor” on the same

body without changing the face-to-face dimension.

Furthermore the truly “top entry design” allows an easy periodical maintenance without removing body from the line without

disconnecting the sensing line. The features of Norval 608 regulators make of it a product suitable for any application.

The fast response time makes it ideal for burner or industrial applications or whenever sudden changes of flowrate are part of the

process. The high accuracy against any inlet pressure variation makes of Norval 608 an optimum product also for gas district systems,

an application generally not suitable for direct acting regulators.

An extremely easy maintenance an reduced number of parts are the background of low cost operation.

Norval 608...+ SN 608Norval 608

The formulae are applicable to natural gas having a relative density of 0.61 w.r.t. air and a regulator inlet temperature of 15 °C. For gases having a different relative density S and temperature t in °C, the value of the flow rate, calculated as above, shall be multiplied by a correction factor, as follows:

Regulator Norval 608 DN50 + slam shut type SN608

101112131415161718192021222324252627282930

0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400

Norval 608Norval 608 IC

INLET PRESSURE = 2 bar

AC 10

Out

let

pres

sure

(mba

r)

Rate of flow (stmc/h gas) Fig.2

Type of gasAirPropaneButaneNitrogenOxygenCarbon dioxide

Relative density1.01.532.00.971.141.52

Fc Factor0.780.630.550.790.730.63

Table 1: Correction factors FC

Table 1 lists the correction factors Fc for anumber of gases at 15 °C.

)16.273(

8.175

tSFc

+x=

> Pressure regulators

AC5 AC10dB

340360420480500500500500600650650650

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

580600650650600600650720920100010001120

IC+dB300330360400500800100012001600210021502150

STD

620750875100013001300130013001200130013001350

dB

5607008009009501000100011001100110012001200

IC

58060060060090014501800215018001000600500

IC+dB550700800940

11801400170020002150215021502150

IC

620750875

100013001550190021502150215020001100

Outletpressure(mbar)

20

AC5 AC10dB

520550550550550600600600700900

10001100

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

580750800800900900900950

1000115011501250

IC+dB400450500600700900

110013001700220022002200

STD

600750900

100013001550160016501550150015501600

dB

550700820900

11001200120013001400150015001600

IC

570720800800

12001450180022002200220018001250

IC+dB55070080090011001300180022002200220022002200

IC

600750900

105013001550200022002200220022002200


30

AC5 AC10dB

50055055055055060060060070090010001100

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

56075085095010001000110011001100120012001300

IC+dB400450500600700900110013001700220022002200

STD

580750900100013001500170019001900180018001800

dB

53068080092011001200120013001400150015001600

IC

56072080080012001450180022002200220018001250

IC+dB530680800900

11001300180022002200220022002200

IC

600750900

100013001540200022002200220022002200


40

AC5 AC10dB

500500550600700800850900

1000110011001200

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

550640700800

10001000100011001100125013001400

IC+dB400450550600800900

120014001900225022502250

STD

550760850

100013001500160018002000200020002000

dB

520650760900

11001400140015001700190020002200

IC

550640700800

12001450180022502250225022502250

IC+dB50065075090011001400180022502250225022502250

IC

550750850

100013001550200022502250225022502250


50

Regulator Norval 608 DN50 + slam shut type SN 608

Capacity Tables

AC5 AC10dB

460500550600750900100012001300140014001400

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

42068080080010001100120014001400150015001600

IC+dB400500550600600900120014001900230023002300

STD

56072086095012501500180022002250225022502250

dB

49065075090011001400160018001900210021002100

IC

50065080095012001450180023002300230023002300

IC+dB500650770900

11501300180023002300230023002300

IC

500700850

100012801530200023002300230023002300


70

AC5 AC10dB

400500600700800

1000110013001500180018001800

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

450550800850

10001100140016001800180019001900

IC+dB300420500600800900

120015002350235023502350

STD

480680820950

12501500200023502350235023502350

dB

420600750850

11001350180022002350235023502350

IC

450650800920

12001450180023002350235023502350

IC+dB43060074085011001300180022002350235023502350

IC

48068084097012601520200023502350235023502350


100

AC5 AC10dB

3005006007009001000110013001500180018001800

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

3705206507509001200150017002000200021002200

IC+dB300450550600800900120015002000240024002400

STD

44065080090012501500200024002400240024002400

dB

38060075085010001350180021002400240024002400

IC

40062077090012001400180023002400240024002400

IC+dB400600740850

11001300180022002400240024002400

IC

430650820950

12501500200024002400240024002400


120

AC5 AC10dB

320400500650800

1000120015001600180019002100

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

350550650750

10501300150018002100220023002400

mon.+dB280400500600800900

120015002000245024502450

STD

380620780920

12501500200024502450245024502450

dB

350550700800

11001350180022002450245024502450

IC

350500650750

10501200180020002450245024502450

IC+dB34055070085011001300180022002450245024502450

IC

37060078092012501500200023002450245024502450


140

AC5 AC10dB

2004505507009001100130016001800200022002500

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

25052070085011001350150018002100220023002500

IC+dB2004005507009001000150017002200250025002500

STD

27056075090012001450200025002500250025002500

dB

25050068080011001350180022002500250025002500

IC

25050065080010501300185022002500250025002500

IC+dB240500680800

11001300180022002500250025002500

IC

270550750900

12001500200024002500250025002500


170

AC5 AC10dB

0400600750

10001200150018002000240025002550

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

0480650830

11001400190022002250230024002550

IC+dB

0400600750

10001250170021002400255025502550

STD

0500700870

12001450200024502550255025502550

dB

0450650800

11001350180022002500255025502550

IC

0450650830

11001400190023002500255025502550

IC+dB

045065080011001300180022002550255025502550

IC

050070087012001450200024502500255025502550


200

STD = only with slam shut dB = with silencer IC = increased capacity IC + dB = increased capacity + silencer


AC5 AC10dB

7008008509009001000100010001000100011001200

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

700900100012001500190019002000200020001500800

IC+dB5006007008001100160014001200120012001000800

STD

130016001900220023002400260029002900290031003400

dB

100012001400150016001800180018001800180019002000

IC

7009001000100015002000240028003000350020001300

IC+dB100012001400160021002700340040003000200024002800

IC

130016001900220023003000320036004000440035003000


20

AC5 AC10dB

800850900950

10001200120012001200120014001600

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

120014001500160019002200250028002800280023001800

IC+dB400500600700

10001400200025002300220022002200

STD

130016501900220025002600280032003300350035003700

dB

105012001400160018001900200022002200230023002400

IC

120011001200140018002200250028002500180015001300

IC+dB105013001600180023002800360045005000550055005500

IC

130016501900220027003200380040004100420035003000


30

AC5 AC10dB

900900950100012001400140014001400140016001800

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

100012001300140016002000220028003000320032003200

IC+dB40050060070010001400200025002300220022002200

STD

125016001800210023002500270030003200360037003800

dB

100013001500180019002000220025002700280028002800

IC

100011001200140018002200250028002500180015001300

IC+dB100013001600180023002800360045005000550055005500

IC

125016501900220027003200380040004100420035003000


40

AC5 AC10dB

100010001000110013001500150016001600160017001800

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

100012001300140016002200250030003100330033003400

IC+dB700600800

100012001300200025002500250027003000

STD

120015501850210023002800300034003500360037003800

dB

100013001500170020002200240026002800300030003000

IC

100011001200150018002100250030003500400025001800

IC+dB100013001500170021002500320038004500550055005500

IC

120015501850210026003200350045005000550055005500


50

Regulator Norval 608 DN80 + slam shut type SN 608

Capacity Tables

AC5 AC10dB

700800900100013001600170018002000220022002200

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

110012001300150019002200260030003200360037003800

IC+dB60060070080012001600210026003500500050005700

STD

110015001800210026003000320034003600380039004000

dB

90012001500180020002200240028003000340034003500

IC

90012001400160020002200290035004000480030002000

IC+dB900

12001500180022002600350042005000570057005700

IC

110015001800210026003200420050005500550055005500


70

AC5 AC10dB

700800

1000120014001600200022002300230023002300

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

90010001250150019002200260031003300360037003800

IC+dB850

10001200140016001800240030004500590059005900

STD

100014001700210027003200350038003800380040004400

dB

85011001500170022002700260030003200370037003800

IC

80012001400160020002300300035004000450050005500

IC+dB85011001500170022002700360044005000590059005900

IC

100014001700210027003200420050005500550055005500


100

AC5 AC10dB

700800900100014001700200023002500270027002800

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

70010001200140018002200260031003300360037003800

IC+dB85010001200140016001800240030004500590059005900

STD

90014001700200026003100350038004000450046004800

dB

80011001400160022002700300032003400380039004000

IC

70010001300180020002200260034004000450050005800

IC+dB850

11001500170022002700360044005000590059005900

IC

90014001700240026003200430050005500580058005800


120

AC5 AC10dB

600800

1000110015001800200023002500280029003000

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

60010001300160020002200260032003400360038004000

mon.+dB600800

1000110016002200290035004500600060006000

STD

80014001700220026003200350040004200450047005000

dB

70011001400170022002700330035003800420043004500

IC

60010001300160020002200260034004000450050006000

IC+dB70011001400170022002700350040005000600060006000

IC

80014001700220026003200430050005500600060006000


140

STD = only with slam shut dB = with silencer IC = increased capacity IC + dB = increased capacity + silencer

AC5 AC10dB

3509001200140016002000250026003000320034003500

Inletpressure

(bar)0,20,30,40,5

0,751

1,523456

STD

40010001400170019002400270031003200350037003800

IC+dB3509001200140016002100280034004100480055006200

STD

55013001900230025003200360040004700500052005500

dB

45011001500190022002700350038004000450047005000

IC

4009001300160017002100280034004100480055006200

IC+dB450

11001500190022002700360040004200600062006200

IC

50013001900220025003100420049005500600062006200


170

AC5 AC10dB

0800

1200150018002300260030003200350036003800

Inletpressure

(bar)0,20,30,40,50,75

11,523456

STD

0950

1400160018002500275030003200350037003800

IC+dB

0800

1200150018002300290035004200510060006500

STD

012001800220025003200380045004700500052005500

dB

010001600190022002700360042004500500052005500

IC

0800

1200150018002300260030003200350036003800

IC+dB

010001600190022002700360042005000600065006500

IC

012001900230025503100420048005500600065006500


200


Table 2 shows the available pressure switch

Slam-Shut Valve

This is a device stopping immediately gas flow when, whatsoever downstream pressure exeeds giveen set-point. Device can be actuated also manually.

Incorporated SN 608 Slam-Shut

SN 608 Slam shut (see figure 3) can be incorporated on the standard regulator and on the in-line monitor. The regulator with the incorporated slam-shut has Cg coefficients equal to 90% of those of the basic regulator. A further advantage of the incorporated slam-shut valve is that it can be retro fitted at any time on a previously installed Norval 608 without modifying the regulating unit.The main features of this slam-shut device are:- design pressure 6 bar for all the components;- accuracy (AG): up to ±1% of the pressure set-point for pressure increase; up to ±5% for pressure decreasing;- internal by-pass;- intervention for over pressure and/or under pressure;- manual push-button control;- possibility of pneumatic or electromagnetic remote control;- compact overall dimensions;- easy maintenance;- possibility of application of devices for remote signal (contact or inductive microswitches).

Pressure switch model Set point range for Overpressure (OPSO) Set point range for Underpressure (UPSO)

Tabella 2: Pressure switch

SN 9130 ÷ 500 (mbar)

10 ÷ 250 (mbar)(12”w.c. to 7,2 psig)(4” w.c. to 3,6 psig)

Fig.3

Functioning as Monitor

The monitor is an emergency regulator which comes into operation in place of the main regulator if, in the event of failure, the latter allows the downstream pressure to reach the monitor set-point.

Fig.4

Operation of the Norval functioning as Monitor

NORVAL 608 IC with sensing line connected downstream, can work as wide open monitor regulator, IC in this case acts as further mobile assembly balancing device insuring higher accuracy of regulated pressure and at the same time an accurate take over pressure without risk of interference with main regulator (see figure 4).It is possible to convert an already-installed Norval 608 regulator into a Norval 608 IC with monitor option, using a proper IC transformation KIT.

IC

Incorporated silencer

Whenever specific noise limits are required, the silencer allows you to considerably reduce the decibel (dBA) noise emissions during the gas pressure regulators operation.The Norval 608 pressure regulator can be supplied with an incorporated silencer in either the standard version, with incorporated slam-shut or in line monitor version.With the built-in silencer the it can lead to a decrease of the capacity in comparison with corresponding version without a silencer.Given the modular arrangement of the regulator, the silencer may be retrofitted to both standard Norval 608 version as well as those with incorporated slam-shut or monitor version, without any need to piping modification. Pressure reduction and control operate the same manner as in standard version.


Possible installation schemes

Outlet pressure

Inlet pressure

NORVAL 608 + SN 608 SLAM-SHUT VALVE

SN 608

Fig.5

Installation

To ensure proper operation and optimal performance, the following should be observed while installing Norval 608 pressure regulator: a) filtering: the gas flowing in the piping shall be adequately filtered. It is also recommended that the piping upstream

from the regulator is clean withaut impurities;b) sensing line: for correct operation, sensing line pick up must be appropriately positioned. Between the regulator and the downstream take-off there must be a lenght of pipe ≥4 times the diameter of the

outlet pipe; beyond the take-off, there must be a further lenght of pipe ≥2 times the same diameter.

NORVAL 608 IC + SN 608 SLAM-SHUT VALVE

Fig.6

NORVAL 608 + MONITOR IC + SN 608 SLAM-SHUT

SN 608Fig.7

IC

SN 608

IC


Fig.8SN

SN

NORVAL 608 + VALVOLA DI BLOCCO SCN

Norval IC with slam shut SN 608

Overal dimensions in mm

Size (mm)Inchesaa1bb1b2cdfs

502”420590106136186495182

R 1/2”254

Weights in Kgf

Size (mm)InchesNorval 608Norval 608 with slam-shut/SN 608Norval 608 IC Norval 608 IC with slam-shut/SN 608

803”5355

59,561,5

502”3840

39,541,5

(*) ANSI 150 - PN16

The Norval regulator face to face dimensions S according to IEC 534-3 and EN 334

a1

170

a

DN

s

b

d

170

a

a1

DN DN DN

øe 10b2

b1

øe 10øe 10

803”425595132162212495187

R 1/2”298

c cf f

Overall dimensions and weight

Pu= inlet pressure

Pd= outlet pressure

Q= flow rate

In case of order please specify the following informations

PRODUCT FEATURESTECHNICAL DATA- IC - SN 608 Slam-Shut- Silencer-Stroke indicator

Norval 608SN 608

Silencer

Strokeindicator

Norval 608 ICDN

PN 16

ANSI

Available accessories

They can be ordered separately and can be installed on an alredy existing regulator

Pietro Fiorentini S.p.A.via E.Fermi 8/10I-36057 Arcugnano (VI)Italy

Tel. +39 0444 968.511Fax. +39 0444 960.468

www.fiorentini.com

via Rosellini 1I-20124 MilanoItaly

Tel. +39 02 696.14.21Fax. +39 02 688.04.57

CT-s547-E November 2009

The data are not binding. We reserve the right to make eventual cheanges without prior notice.

pressure regulators - norval 608 - pietro fiorentini - …...>pressure regulators ac5 ac10 db 340...

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