Flange Insert Check Valve Style – F1, F6, FP

Description

Flange Insert (F1, F6, FP) check valves is the ultimate check valve to install in flanged piping systems. Often referred to as wafer check valves, they provide the simplest most economical way to install check valves in a piping system. The valve body helps position itself while bolts are being installed and tightened. Two gaskets are required instead of the one normally used in a flanged joint. See additional installation guidelines or consult the factory for more information.

These spring loaded check valves are designed to fit between two mating ANSI flanges. The “Spring Housing” designated by the “A” dimension (See:  Size & Dimension table below) is designed to be inserted into the upstream pipe, thereby helping to center it in the pipe. Therefore, there must be clearance between the spring housing and the pipe or flange. Generally speaking, the Flange Insert check valve (F1) is designed for standard schedule pipe with Class 150 or 300 flanges; whereas, the (F6) valves are designed for schedule 80 pipe with Class 150, 300 or 600 flanges.

The Flange Insert check valve can also be used as a low-pressure relief valve or vacuum breaker by using the desired spring settings. Many valves in this series can be supplied with B16.34 certification.

Size & Dimension

Nominal Pipe SizeSize CodeANSI Rating & MaterialABCD*O.D.Orifice Diameter.**
1/2D150 & 300
600
PTFE & PVC
0.605
N/A***
0.600
1/40.29
N/A***
0.27
0.55
0.55
0.68
1-3/80.348
3/4F150 & 300
600
PTFE & PVC
0.762
0.719
0.720
1/40.26
0.24
0.26
0.63
0.62
0.77
1-3/40.464
1H150 & 300
600
PTFE & PVC
1.000
0.922
0.930
1/40.36
0.33
0.36
0.81
0.80
0.81
20.593
1-1/4I150 & 300
600
PTFE & PVC
1.340
1.234
1.240
1/40.44
0.39
0.59
0.88
0.87
0.99
2-1/20.890
1-1/2J150 & 300
600
PTFE & PVC
1.570
1.490
1.490
1/40.44
0.40
0.69
1.04
1.03
1.11
2-7/81.135
2K150 & 300
600
PTFE & PVC
2.005
1.890
1.890
1/40.49
0.43
0.53
1.21
1.21
0.93
3-5/81.385
2-1/2L150 & 300
600
2.407
2.266
1/40.66
0.59
1.45
1.45
4-1/81.555
3M150 & 300
600
PTFE & PVC
3.006
2.844
2.865
5/160.70
0.65
0.73
1.63
1.62
1.62
52.025
4N150 & 300
600
PTFE & PVC
3.964
3.766
3.766
3/81.00
0.96
1.00
1.93
1.93
2.04
6-3/162.560
Size 5" and larger are only available in class 150.
Consult the factory if using Schedule 80 pipe.
5O1504.9851/21.072.147-5/163.280
6P150
PTFE & PVC
6.003
5.700
3/8
9/16
1.52
1.55
2.22
2.78
8-1/23.875
8Q1507.9191/22.273.1410-5/85.110
10R1509.9581/22.843.5812-3/46.380
12S150 Brass Other Metals11.8765/8
1/2
3.12
3.25
4.33
4.18
157.670
14T150 Brass Other Metals13.06211/16
1/2
3.18
3.37
4.58
4.45
16-1/48.460
16U150 Brass Other Metals14.9383/4
9/16
3.69
3.88
5.20
5.05
18-1/29.650
18V150 Brass Other Metals16.8147/8
5/8
3.87
4,12
5.80
5.63
2110.860
20W150 Brass Other Metals18.75015/16
11/16
3.88
4.13
6.54
6.26
2312.110

Check "A" dimension for clearance with pipe ID. Generally "A" dimension is designed for use in standard schedule 40 pipe for class 150 & 300 valves (F1). Order class 600 (F6) valves for schedule 80 pipe.

NOTES (DIMENSIONS TABLE)
*Maximum nominal dimension for a fully open valve with no spring.
**Due to molding process, orifice in plastic valves may vary.
***F6 size "D" does not have a spring housing.
Available Materials

* 316 Stainless Steel (SS)* (PV)
* Alloy 20 (A2)*Alloy B (HB)
* Brass (BR)*Alloy C-276
* Carbon Steel (CS)* Alloy 400 or Monel® (MO)
* PTFE (TF)* Titanium

Pressure Temperature Table

Body MaterialNominal Pipe Size Non-Shock Pressure -Temperature Rating 
ANSI Class 150ANSI Class 300ANSI Class 600
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" - 4"

5" - 20"
x

x
xx
Brass (BR)1/2" - 4"

5" - 20"
x

x
x
PTFE (TF)1/2" - 1-1/2"
2" - 6"
1/2" - 6"
55 PSIG @ 100° F
20 PSIG @ 100° F
PVC (PV)1/2" - 6"200 PSIG @ 100° F
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.

WATER FLOWRATE - GPM

Flow Data

PRESSURE DROP PSI

SizeCv
1/22.4
3/44.4
16.1
1-1/412.7
1-1/218.8
232
2-1/242
389.0
4144
5182
6284
8535
10757
121200
141650
162230
183010
204000

     FOR WATER AT 72°F

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

SIZESS, CS & AlloyBRASSPTFEPVC
1/21.7 oz.1.9 oz.0.5 oz.0.3 oz.
3/42.9 oz.3.2 oz.0.8 oz.0.5 oz.
14.2 oz.4.6 oz1.1 oz.0.7 oz.
1-1/47.0 oz.7.4 oz.1.9 oz.1.4 oz.
1-2/29.5 oz.9.8 oz.2.6 oz.1.7 oz.
216.3 oz.17.3 oz3.8 oz.2.6 oz.
2-1/21.4 lb.1.5 lb.------
32.3 lb.2.6 lb.9.6 oz.6.1 oz.
44.9 lb.5.3 lb.1.2 lb.12.7 oz.
58.2 lb.8.7 lb.------
612.3 lb.13. lb.1.8 lb.1.2 lb.
824.4 lb.26.4 lb.------
1036.3 lb.44 lb.------
1251 lb.58 lb.------
1474 lb.93 lb.------
16105 lb.130 lb.------
18157 lb.201 lb.------
20207 lb.262 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.
FIV1/2" - 1 - 1/2"PTFE
PVC
AFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
FIV2" - 4"PTFE
PVC
AFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
FIV6"PTFE
PVC
AFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/2 PSI316 SS
FIV1/2" - 1 - 1/2"316 SS BrassAFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
FIV1/2" - 1 - 1/2"C. SteelAFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1.8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
FIV2" - 4"316 SS BrassAFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
FIV2" - 4"C. SteelAFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
FIV5" - 20"316 SS BrassAFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/2 PSI316 SS
FIV5" - 20"C. SteelAFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/2 PSI316 SS
FIV1/2" - 20"Alloy 20
Alloy C-276
AFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/2 PSIAlloy C-276
FIV1/2" - 20"Alloy 400 MONEL®AFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/2 PSIAlloy 400 MONEL®
FIV1/2" - 20"Alloy BAFLAS® Buna-N EPDM Kalrez®
"Metal to Metal" Neoprene Viton®
1/2 PSIAlloy B

For additional information about Check Valves

What is a Silent Check Valve?
What is a Spring Loaded Check Valve?
What is a Poppet Check Valve?

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