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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Item #

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D

E

F Hex

G - End Connections

H - End Connections

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N/A 2.68 in N/A 0.58 in N/A 0.94 in N/A 13/16 in N/A 3/8 IJIC N/A 3/8 IJIC $44.36
N/A 2.40 in N/A 0.600 in N/A 0.690 in N/A 11/16 in N/A 1/4 IJIC N/A 1/4 IJIC $40.49
N/A 2.98 in N/A 0.680 in N/A 0.730 in N/A 1 in N/A 1/2 IJIC N/A 1/2 IJIC $49.97
N/A 3.580 in N/A 0.77 in N/A 1.090 in N/A 1 1/8 in N/A 5/8 IJIC N/A 5/8 IJIC $55.87
N/A 4.130 in N/A 0.930 in N/A 1.270 in N/A 1 7/16 in N/A 3/4 IJIC N/A 3/4 IJIC $87.53
N/A 4.700 in N/A 0.950 in N/A 1.410 in N/A 1 13/16 in N/A 1 IJIC N/A 1 IJIC $111.67
N/A 5.830 in N/A 0.990 in N/A 2.000 in N/A 2 5/8 in N/A 1 1/4 IJIC N/A 1 1/4 IJIC $422.05
N/A 7.440 in N/A 1.19 in N/A 2.500 in N/A 3 1/2 in N/A 2 IJIC N/A 2 IJIC $420.95
N/A 6.100 in N/A 1 1/4 in N/A 2.000 in N/A 2 5/8 in N/A 1 1/2 IJIC N/A 1 1/2 IJIC $320.22
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