Maxitrol 13A31-50 Vent Protector 318172-701 This SPST-NO switching relay (Single

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Maxitrol 13A31-50 Vent Protector 318172-701 This SPST-NO switching relay (SingleThe Maxitrol 13A31 50 Vent Protector is a critical component for technicians installing gas regulators in outdoor environments. Featuring a 3 8" NPT connection, this regulator vent protector is the direct engineering replacement for the Maxitrol 13A15 5. It is purpose built to maintain the atmospheric pressure reference required for proper diaphragm operation while shielding the vent orifice from blockage caused by freezing rain, snow, hail, or