cost effective process control of corrosive...
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ProDia Diaphragm Valves are known for their benefits in corrosion
and abrasion resistance, offering features of leak tightness and low
cost maintenance in severe service applications.
The valves are based on simple operating principles and have
recently become more widely used by process engineers as a result
ofthe increased range of diaphragms and body lining materials. Weir
Type 'ST' Diaphragm Valves are extremely versatile in their
application because of the variety of body materials,linings, coatings
and grades of diaphragms available.
Straight through diaphragms incorporate the use of PTFE, offering
maximum chemical and temperature resistance.
ST Type Diaphragm Valves manual bonnet assemblies incorporate
position indication, as well as adjustable tamper-proof and over-
closure-protection.
Over-closure is the most common cause of diaphragm damage,
particularly in temperatures above 80°C (175°F).
Pneumatically, hydraulically and electrically operated
Straight through Type Diaphragm Valves are available for
the automatic control of process plants. The actuators can
be fitted with many forms of positioners, micro and
proximity switches. Numerous other options offer unique
cost effective process control of corrosive services.
P R O D I A D i a p h r a g m v a l v e s T y p e S T
2/4 PRODIAST
* Halar TM is the registered mark of Ausimont UK Limited. * Rilsan TM is the registered trademark of ATO Chemical Products * Is the registered trademark of E.I. du Pont de Nemours and Company
unlined
ETFE lined
PFA coated
Rubber lined
Pvc coated
Advantages
In-line maintenance – all topworks (diaphragm and operator) can be replaced without
disassembling the body from the pipeline.
Regular diaphragm inspection, and replacement when necessary, will increase valve life
Bonnet isolation – all bonnet components are isolated from the service by means of the
diaphragm
No packings/gaskets are required, thus eliminating a common leak path found in other
valves types Design flexibility – wide range of diaphragms, linings and operators
offering scope to maximize valve life.
Over-closure protection – lowers cost of owning ProDia diaphragm valves by reducing
the possibility of over-clouser, which decreases diaphragm and valve body life
Diaphragm valves are self-draining and self-cleaning
Body Connection DN
GG 25 Screwed ends 25-80
Flange 25-300
GGG 40.3 Screwed ends 25-80
flange 25-300
GS-C25 Screwed ends 25-80
Flange 25-300
1.4408. Welded ends 25-100
Screwed ends 25-80
Flanges 25-300
Bronze Screwed ends 25-50
Flange 25-150
Soft rubber Flange 25-300
Hard rubber Flange 25-300
Butyl Flange 25-300
Neoprene Flange 25-300
Hypalon Flange 25-300
Email Flange 25-200
ECTFE Flange 25-200
ETFE Flange 25-200
PVDF Flange 25-200
NYLON 11 Flange 25-200
PRODIAST 3/4
Max allowed pressure at Temperature between -10°C to 50°C (14° to 122°F) *
DN (mm) INCH BAR PSI
25 -100 1-4 10 145
125 -150 5-6 6 87
200 -300 8-12 3,5 50
* higher Temperature lower the physical properties of the diaphragm and causes a decrease of the pressure.
Chart for ST Diaphragm and ST body
DIMENSION 15 20 25 32 40 50 65 80 100 125 150 200 250 300
BS 5156
UNLINED A 127 159 190 216 254 305 356 406 521 635 749
B 150 150 194 270 270 300 420 420 453 660 660
Wkg 3,7 5,9 9,3 13,5 21,5 33 50,5 65 130 250 330
A
133 165 196 223 261 313 364 415 530 645 759
Rubber lined B
155 154,5 198,5 276 276 307 429 429 462 660 660
DIN 3202/F1
UNLINED A 160 200 230 290 310 350 400 480 600 730 850
B 150 150 194 270 270 300 420 420 453 660 660
Wkg 4,4 6,3 9,8 15,7 26,6 34 51,5 69 136 290 385
A
160 200 230 290 310 350 400 480 600 730 850
Rubber lined B
155 154,5 198,5 276 276 307 429 429 462 660 660
MSS SP-88
UNLINED A 140 165 190 216 254 317 - 406 521
B 150 150 194 270 270 300 - 420 453
Wkg 4,0 6,1 9,3 13,5 21,5 52 - 65 130
A 146 171,5 197 223 261 324 - 415 530
GUMMIERT B 155 154,5 198,5 276 276 307 - 429 462
VERSCHRAUBUNG
UNLINED A 108 167
B 150 194
Wkg 1,5 5,1
For rubber lined valves please add to face to face (except Standard DIN)
6 mm (1/4 ") – for DN 25 - DN 80 (1"-3")
8 mm (5/16 ") – for DN 100 - DN 200 (4"-8") 10 mm (3/8 ") – for DN 250 - DN 300 (10"-12")
A
Dimension / Weight
4/4
B
Handwheel Pin
Handwheel
Stem
Compressor Pin
Thrust disc Bonnet
Compressor
Bolts / Nuts
Diaphragm Body / s. Spec
Spring steel
Cast iron
Stainless steel
Spring steel
Polyacetal Cast Iron
Cast Iron
Steel 8.8
s. Spec
s. Spec
ProDiaST
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Quelle der verwendeten Bilder im Prospekt: www.Fotolia.de Urheber: Eray Haciosmanoglu, Orlando Florin Rosu , erikdegraaf , christian42 , Dan Race , Paul Stock , Thaut Images
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