These spring-operated poppet valves, with optional relief settings, allow free flow in only one direction and prevent backflow – sometimes referred to as “backflow preventor”, “flow stop”, or “non-return” valve. They also are used for relief and by-pass functions; however, they should not be used as safety relief valves. Kepner's Flexible Seal Seat™ combines metal-to-metal contact with a resilient seal seat ensuring dependable bubble-tight shutoff of liquid or gas, and long service life. Standard and specialty valve designs handle a wide variety of applications.
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A - Total Length

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F Hex

G - End Connections

H - End Connections

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N/A 2.00 in N/A 0.400 in N/A 1.6 in N/A 0.270 in N/A 0.230 in N/A 11/16 in N/A 1/8 FPT N/A 1/8 MPT $39.41
N/A 2.640 in N/A 0.600 in N/A 2.04 in N/A 0.53 in N/A 0.350 in N/A 13/16 in N/A 1/4 FPT N/A 1/4 MPT $43.19
N/A 2.84 in N/A 0.610 in N/A 2.23 in N/A 0.300 in N/A 0.380 in N/A 1 in N/A 3/8 FPT N/A 3/8 MPT $48.65
N/A 3.33 in N/A 0.790 in N/A 2.540 in N/A 0.44 in N/A 0.380 in N/A 1 1/8 in N/A 1/2 FPT N/A 1/2 MPT $54.37
N/A 3 3/4 in N/A 0.810 in N/A 2.950 in N/A 0.56 in N/A 0.440 in N/A 1 7/16 in N/A 3/4 FPT N/A 3/4 MPT $85.21
N/A 4.470 in N/A 1.00 in N/A 3.470 in N/A 0.53 in N/A 0.600 in N/A 1 13/16 in N/A 1 FPT N/A 1 MPT $108.71
N/A 5.420 in N/A 0.97 in N/A 4.450 in N/A 0.730 in N/A 0.880 in N/A 2 5/8 in N/A 1 1/4 FPT N/A 1 1/4 MPT $292.90
N/A 5.470 in N/A 1.00 in N/A 4.470 in N/A 0.75 in N/A 0.880 in N/A 2 5/8 in N/A 1 1/2 FPT N/A 1 1/2 MPT $311.74
N/A 6.910 in N/A 1.030 in N/A 5.880 in N/A 0.94 in N/A 1.190 in N/A 3 1/2 in N/A 2 FPT N/A 2 MPT $409.77
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