World-Class Engineered Thermoplastic Valves

Valves

Diaphragm Valves

Flanged Type (1/2" - 10")

  • Solid thermoplastic body and bonnet for best overall corrosion resistance.
  • Large diameter molded in stainless steel diaphragm stud for long life service.
  • Fully lubricated brass or cast iron stem and sleeve. Sizes 3" and larger have bonnet grease fitting for ease of in service lubrication.
  • Extra heavy EPDM diaphragm or optional PTFE diaphragm fully backed by EPDM, for long service life under the most severe conditions.
  • Unique concave/convex PTFE/ EPDM diaphragm design insures PTFE barrier returns to full open position.
  • Standard, adjustable full close position over travel stop to eliminate premature diaphragm failure due to over tightening.
  • Full stroke, fully protected open/close position indication.
  • Stainless steel or plastic encapsulated external hardware.
  • Longer service life and higher Cv values than rubber lined valves.
  • High pressure, temperature and vacuum service rated, suitable for most applications.
  • Can be used in lined, metal FRP or thermoplastic piping systems.
  • Flanged application valves designed to fit between ANSI B16.5 Class 150 flanges.
Diaphragm Valves Diagram

Materials of Construction

ITEM PARTS PCS MATERIALS
1 Body 1 PVC, PP, PVDF, CPVC
2 Bonnet 1 PVC, PP, PVDF, CPVC, PPO
3 Compressor 1 1/2"-1" PPG+Nylon
1/2"-10" Cast Iron
4 Hand Wheel 1 PP
5 Sleeve 1 1/2"-2" Brass
21/2"-10" Cast Iron
6 Stem 1 1/2"-2" Brass
21/2"-10" SS 41
7 Diaphragm 1 EPDM, HYPALON TEFLON®
8 Cap 1 1/2"-2" Brass
21/2"-10" PVC,PP
9 Compressor Pin 1 SUS-304
10 Name Plate 1 PVC
11 Grease Nipple 1 BRASS
12 Stud Bolt & Nut SS41, SUS304
13 Inserted Nut BRASS
14 Bolt Nut & Washer SS41, SUS304
15 Thrust Bearing 1 Standardized 3" - 10" Used Only
16 Stopper 1 SS-41, BRASS, SUS304
17 Set Nut 1 SS-41, BRASS, SUS304
18 Gauge Cover 1 POLYCARBONATE
19 Sheet Gasket 1 EPDM
20 Sheet Ring 1 SS-41, BRASS,SUS304
21 Spring Washer 1 SS-41, SUS304

HYPALON® VITON® and TEFLON® are trademarks of DuPont Dow Elastomers

Ansi Dimensions

Size Inch D1 D2 D3 e No. of Holes D4 D5 Lift L T H I
1/2" 0.63 238 3.50 0.63 4 2.32x2.09 3.70 0.51 4.25 0.51 3.98 5.51
3/4" 0.79 276 3.85 0.63 4 2.80x2.48 3.70 0.51 5.90 0.59 4.17 5.98
1" 0.98 313 4.25 0.63 4 3.15x2.60 3.70 0.55 5.90 0.67 4.45 6.22
1 1/2" 1.61 388 5.00 0.63 4 4.95 5.79 0.94 6.95 0.67 5.24 7.60
2" 2.05 474 5.96 0.75 4 5.83 5.79 1.10 7.95 0.67 5.71 8.27
2 1/2" 2.68 549 7.01 0.75 4 7.48 7.95 1.26 9.85 0.79 7.76 10.87
3" 3.07 600 7.52 0.75 4 8.46 7.95 1.34 10.40 0.79 8.50 11.54
4" 3.94 750 9.02 0.75 8 10.04 9.49 2.13 12.95 1.10 10.28 14.57
5" 4.92 850 10.00 0.87 8 12.60 10.79 2.83 16.14 1.10 1213 16.22
6" 5.83 951 10.98 0.87 8 15.16 15.55 2.83 18.90 1.26 13.15 18.54
8" 7.80 11.75 13.50 0.87 8 16.93 15.55 3.78 22.44 1.26 16.40 24.61
10" 9.76 14.25 15.98 0.98 12 21.26 21.85 5.20 26.77 1.34 20.08 29.53
Size Inch Rubber Diaphragm @ 73°F Teflon Diaphragm @ 73°F
UPVC PP PPG CPVC PVDF UPVC PP PPG CPVC PVDF
1/2" 150 150 150 150 150 105 105 105 105 105
3/4" 150 150 150 150 150 105 105 105 105 105
1" 150 150 150 150 150 105 105 105 105 105
1 1/2" 150 150 150 150 150 105 105 105 105 105
2" 150 150 150 150 150 105 105 105 105 105
2 1/2" 150 150 150 150 150 105 105 105 105 105
3" 150 150 150 150 150 90 75 90 90 90
4" 150 150 150 150 150 90 75 90 90 90
5" 105 105 105 105 105 60 60 60 60 60
6" 105 105 105 105 105 60 60 60 60 60
8" 60 60 60 60 60 45 45 45 45 45
10" 60 45 60 60 60 45 45 45 45 45

Testing performed on PVC Body, EPDM diaphragm at 73°F water temperature, non-shock.

Flanged Body Type 1/2" - 10" Diaphragm Valves

Design Specifications

Thermoplastic Diaphragm Valves 1/2" - 10" shall be molded of solid thermoplastic materials for body and bonnet. Body is of the weir configuration exhibiting large flow area and good flow control capability. Body is designed to fit between ANSI B16.5 class 150 flanges. Stem and sleeve shall be brass or cast iron, fully lubricated . Sizes 3" and larger employ a bonnet grease fitting for ease of lubrication. All valves shall have an adjustable overtravel stop in the close position to prevent overtravel and premature diaphragm failure. Full stroke position indication is enclosed in a clear protective cover. All external fasteners shall be either encapsulated in plastic or of stainless steel materials. Materials of construction shall be: (select as required for service)

Body

PVC,CPVC,ASTM D-1784,PP,ASTM D-4101,PVDF, ASTM D-3222

Bonnet

PPO, ASTM D-4101 (standard)
PVC,CPVC,ASTM D-1784,PP,ASTM D-4101,PVDF, ASTM D-3222

Stem/Sleeve

Brass, 1/2" - 2",
C.I., 2 1/2" - 10"

Diaphragm

EPDM, Ethylene Propylene Diene Monomer
Fluorocarbon, Viton® (DuPont Dow Elastomers) only avail. for vacuum service only
PTFE/EPDM, Teflon® (DuPont Dow Elastomers)

Diaphragm Insert Stud

Stainless Steel, Large Diameter

Positive Indicator Cover

PC, Polycarbonate, ASTM - D-2848

Handwheel

ABS, ASTM D-1788

Note: For any diaphragm application with use of sodium hypochlorite, factory must be informed prior to quote.