Wafer Insert Valve Style – WV

Description

The Wafer Insert (WV) valve (also known as a wafer check valve) is designed to fit between two mating ANSI flanges.  Two gaskets are required, instead of the one normally used.  The “drop in” valve body fits inside the bolt circle for quick installation and removal in rigid piping applications where the use of the F1, F6, or FP are not practical.  Many valves in this series meet API 594 and/or B16.34 requirements.  Consult the factory for complete details.

WV valves can also be used as a low pressure relief valve or vacuum breaker by simply using the desired spring settings.

Size & Dimension

Nominal Pipe Size Size Code A B C D* Oricife Diameter
1/2 D 1-3/8 0.62 1.38 N/A 0.348
3/4 F 1-3/4 0.82 1.38 N/A 0.464
1 H 2 1.05 1.38 0.35 0.593
1-1/4 I 2-1/2 1.35 1.63 0.27 0.890
1-1/2 J 2-7/8 1.61 1.63 0.54 1.135
2 K 3-5/8 2.07 2.38 0.17 1.385
2-1/2 L 4-1/8 2.47 2.62 0.31 1.555
3 M 5 3.07 2.88 0.42 2.025
4 N 6-3/16 4.03 2.88 1.25 2.560


NOTES (DIMENSIONS TABLE)*Maximum nominal dimension for a fully open valve with no spring. Consult factory for more information.

Available Materials

* 316 Stainless Steel (SS) * Alloy B (HB)
* Alloy 20 (A2) * Alloy C-276 (HC)
* Brass (BR) * Alloy 400 or MONEL® (MO)
* Carbon Steel (CS) * Titanium (TI)

Pressure Temperature Table

Body Material Nominal Pipe Size Non-Shock Pressure-Temperature Rating
316 Stainless Steel (SS)
Carbon Steel (CS)
Alloy 20 (A2)
Alloy C-276 (HC)
Alloy B (HB)
Alloy 400 or MONEL® (MO)
Titanium (TI)
1/2" - 2-1/2"

3"

4"

ANSI Class 150 - 1500
(1500 PSIG for o-ring seats)
ANSI Class 150 - 900
(1500 PSIG for o-ring seats).
ANSI Class 150 - 600
(1500 PSIG for o-ring seats)
Brass (BR) 1/2" - 4" ANSI Class 150 - 300


Seat material and spring material selection may limit the recommended service temperature.
See seat ratings, spring ratings, and body material ratings for their respective recommended service temperatures.
Consult the factory for reduced P-T rating above 100 °F. Standard spring material is 316 Stainless Steel.

Flow Data

PRESSURE DROP PSI

Size Cv
1/2 2.4
3/4 4.4
1 6.1
1-1/4 12.7
1-1/2 18.8
2 32.0
2-1/2 42.5
3 89.0
4 144

WATER FLOWRATE - GPM

Note: All flow curves and Cv values presume the valves are fully open with 1/2 PSI cracking pressure springs. Consult the factory for more information.

 

Valve Weights

SIZE PART NUMBER SS, CS & Alloy BRASS
1/2 WVD 9.5 oz. 10.2 oz.
3/4 WVF 12.6 oz. 13.5 oz.
1 WVH 1.0 lb. 1.1 lb.
1-1/4 WVI 1.8 lb. 1.9 lb.
1-1/2 WVJ 2.4 lb. 2.5 lb.
2 WVK 5.2 lb. 5.6 lb.
2-1/2 WVL 7.2 lb. 7.7 lb.
3 WVM 11.4 lb. 12.4 lb.
4 WVN 17.2 lb. 18.4 lb.


Valve weights are approximate.

Seat & Cracking Pressure Options
Valve Style Size Range Body Materials
Other Options
Allowable Seat Materials
Other Options
Standard Cracking Pressures
Other Options
More Info.
Standard Spring Material
More Info.
WIV 1/2" 1-1/2 316 SS Brass AFLAS®
EPDM
"Metal to Metal"
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
WIV 1/2" 1-1/2 C. Steel AFLAS®
EPDM
"Metal to Metal"
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
WIV 2" - 4" 316 SS Brass AFLAS®
EPDM
"Metal to Metal"
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
WIV 2" - 4" C. Steel AFLAS®
EPDM
"Metal to Metal"
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
WIV 1/2" - 4" Alloy 20
Alloy C-276
AFLAS®
EPDM
"Metal to Metal"
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/2 PSI Alloy C-276
WIV 1/2" - 4" Alloy 400 or MONEL® AFLAS®
EPDM
"Metal to Metal"
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/2 PSI Alloy 400 or MONEL®
WIV 1/2" - 4" Alloy B AFLAS®
EPDM
"Metal to Metal"
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/2 PSI Alloy B