Upstream vs downstream pressure is balanced via communication of the process fluid above and below the balancing diaphragm or piston in order to eliminate opening/closing forces due to pressure differential. Designed for liquid systems, and available in either pressure-opening (normally closed) or pressure-closing (normally open) configurations.
Specifications
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Connection Size: 3 "
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Connection Type: Female NPT
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Body Style: Through Body
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Body Material: Cast Ductile
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Option Available for NACE MR0175 compliance or certification.
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Trim Size: 2.25 "
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Trim Type: Linear (Nominal)
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Seal Class: Class VI
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Process Fluid: Liquid and Gas
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Max. Working Pressure: 400 psig
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Actuator Spring Nominal Pressure: 25 psig
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Actuator Crack Open Pressure: 10 psig
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Actuator Full Open Pressure: 25 psig
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Max. Supply Gas Pressure: 45 psig
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Valve Fail Position: Open
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Operation: Pneumatic
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Catalog Page: E3:10.7
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Face-to-Face Length: 12 "
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Repair Kit P/N: RFS
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