Designed for mounting in threaded full or half couplings in container installations. They may be used for filling, withdrawal or vapor equalizing applications. The exceptionally low pressure drop makes them ideal for pump suction lines. If a riser pipe to the vapor space is used with these valves, the minimum inside diameter of the riser pipe must be at least two times the valve thread size in order not to restrict flow to the side inlet ports.
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Item #

For Use With This Type Coupling

A. Inlet Connection M. NPT

B. Outlet Connection NPT

C. Wrench Hex Flats

Approximate Closing Liquid Flows

A8523 N/A Half
N/A 3/4 in N/A 3/4" Male N/A 1-1/8 in N/A 15 gpm/propane
A8525 N/A Half
N/A 1-1/4 in N/A 1-1/4" Male N/A 1-3/4 in N/A 35 gpm/propane
A7537L4 N/A Half
N/A 2 in N/A 2" Male and 1-1/4" Female N/A 2-5/8 in N/A 75 gpm/propane
A7537L4F N/A Full
N/A 2 in N/A 2" Male and 1-1/4" Female N/A 2-5/8 in N/A 75 gpm/propane
A7537N4 N/A Half
N/A 2 in N/A 2" Male and 1-1/4" Female N/A 2-5/8 in N/A 125 gpm/propane
A7537N4F N/A Full
N/A 2 in N/A 2" Male and 1-1/4" Female N/A 2-5/8 in N/A 125 gpm/propane
A7537P4 N/A Half
N/A 2 in N/A 2" Male and 1-1/4" Female N/A 2-5/8 in N/A 150 gpm/propane
A7537P4F N/A Full
N/A 2 in N/A 2" Male and 1-1/4" Female N/A 2-5/8 in N/A 150 gpm/propane
A7539R6 N/A Half
N/A 3 in N/A 3" Male and 2" Female N/A 3-3/4 in N/A 150 gpm/propane
A7539R6F N/A Full
N/A 3 in N/A 3" Male and 2" Female N/A 3-3/4 in N/A 150 gpm/propane
A7539T6 N/A Half
N/A 3 in N/A 3" Male and 2" Female N/A 3-3/4 in N/A 200 gpm/propane
A7539T6F N/A Full
N/A 3 in N/A 3" Male and 2" Female N/A 3-3/4 in N/A 200 gpm/propane
A7539V6 N/A Half
N/A 3 in N/A 3" Male and 2" Female N/A 3-3/4 in N/A 250 gpm/propane
A7539V6F N/A Full
N/A 3 in N/A 3" Male and 2" Female N/A 3-3/4 in N/A 250 gpm/propane
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