Style FIV - Flange Insert Valve From Check All Valves

The Flange Insert Valve is the ultimate check valve in flanged systems. Designed to be inserted between two mating ANSI flanges, it provides the simplest most economical way to install a check valve in a piping system. The valve body automatically positions the valve and holds it in place while bolts are being installed and tightened. All that is required is two gaskets in place of the one normally used in a flange joint. 

Flange Insert Valves are available in the following materials and sizes:
1. 316 Stainless Steel 1/2 thru 20 inches
2. Carbon Steel 1/2 thru 20 inches
3. Brass 1/2 thru 20 inches
4. Teflon resin 1/2 thru 6 inches
5. PVC 1/2 thru 6 inches
6. Other super alloys 1/2 thru 20 inches

Flange Insert Valves are available in most metal alloys for use with ANSI class 150, 300 and 600 flanges. Brass valves are for use with the ANSI class 150 and 300 flanges.
Flange Insert Valves can be used as check valves, low pressure relief valves and vacuum breakers by simply using different spring settings. 
Flange Insert Valves are available in Titanium, HASTELLOY Alloys, MONEL Alloys, Alloy 20 and many other alloys.
Non-Shock Pressure - Temperature Rating
Material Valve Size P-T Rating Recommended
Service Temp.
Teflon Resin 1/2 - 1-1/2 55 PSIG @ 100°F -320°F to 400°F
Teflon Resin 2 - 6 20 PSIG @ 100°F -320°F to 400°F
PVC 1/2 - 6 200 PSIG @ 100°F +32°F to 150°F
Brass 1/2 - 4 ANSI Class 150 & 300 -320°F to 400°F
5 - 20 ANSI Class 150
Metal Valves 1/2 - 4 ANSI 150, 300 & 600 -320°F to 700°F
5 - 20 ANSI Class 150
Size Style Number ANSI Rating
& Material		 A B C OD Orifice
Diameter
1/2" FID 150 & 300
600
PTFE & PVC		 0.605
N/A
0.600		 1/4
1/4
1/4		 17/64
N/A
17/64		 1-3/8 0.348
0.348
0.348
3/4" FIF 150 & 300
600
PTFE & PVC		 0.762
0.719
0.720		 1/4
1/4
1/4		 1/4
1/4
1/4		 1-3/4 0.464
0.464
0.464
1" FIH 150 & 300
600
PTFE & PVC		 1.000
0.922
0.925		 1/4
1/4
1/4		 23/64
5/16
25/64		 2 0.593
0.593
0.593
1-1/4" FII 150 & 300
600
PTFE & PVC		 1.340
1.234
1.240		 1/4
1/4
1/4		 7/16
3/8
7/16		 2-1/2 0.890
0.890
0.890
1-1/2" FIJ 150 & 300
600
PTFE & PVC		 1.570
1.490
1.470		 1/4
1/4
1/4		 7/16
13/32
1/2		 2-7/8 1.135
1.135
1.135
2" FIK 150 & 300
600
PTFE & PVC		 2.005
1.890
1.890		 1/4
1/4
1/4		 7/16
27/64
33/64		 3-5/8 1.385
1.385
1.385
2-1/2" FIL 150 & 300
600		 2.407
2.266		 1/4
1/4		 21/32
37/64		 4-1/8 1.555
1.555
3" FIM 150 & 300
600
PTFE & PVC		 3.006
2.844
2.850		 5/16
5/16
5/16		 11/16
41/64
23/32		 5 2.025
2.025
2.025
4" FIN 150 & 300
600
PTFE & PVC		 3.964
3.766
3.766		 3/8
3/8
3/8		 1-3/64
61/64
1-1/8		 6-3/16 2.560
2.560
2.560
5" FIO 150 4.985 1/2 1-1/16 7-5/16 3.280
6" FIP 150
PTFE & PVC		 6.003
5.700		 3/8
9/16		 1-33/64
1-35/64		 8-1/2 3.875
3.875
8" FIQ 150 7.919 1/2 2-17/64 10-5/8 5.110
10" FIR 150 9.958 1/2 2-53/64 12-3/4 6.380
12" FIS 150 Brass
Other Materials		 11.876
11.876		 5/8
1/2		 3/7-64
3-15/64		 15 7.670
7.670
14" FIT 150 Brass
Other Materials		 13.062
13.062		 11/16
1/2		 3-11/64
3-23/64		 16-1/4 8.460
8.460
16" FIU 150 Brass
Other Materials		 14.938
14.938		 3/4
9/16		 3-11/64
3-7/8		 18-1/2 9.650
9.650
18" FIV 150 Brass
Other Materials		 16.814
16.814		 7/8
5/8		 3-55/64
4-7/64		 21 10.860
10.860
20" FIW 150 Brass
Other Materials		 18.750
18.750		 15/16
11/16		 3-7/8
4-1/8		 23 12.110
12.110
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