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Output relays programmable as normally activated or normally deactivated and for desired alarm activations
Designed for tank filling applications where a tight fill connection is not required
Normal vents such as pressure vacuum and updraft vents for aboveground storage tanks should be sized according to NFPA 30 (2008) 21
The alarm provides an audible alarm and visual indication upon the receipt of a signal
Vertical Check Valve with 50 PSI ER (FKM) QD coupler Output relays programmable as normallySingle poppet one way check valve used to prevent backflow in supply lines or used as a prime holding valve in suction systems. NOTE: Opening pressure settings are approximate. Standard Features Soft seat Thermal expansion available (25 or 50 PSI approximate) 1 2 to 2 PSI spring setting Construction Details Body: Brass Cap: Brass Plunger: Brass Spring: Stainless steel Discs: Buna N (FKM and PTFE available) Expansion valve: Brass with FKM
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