Hoffman Air Valve 401488 79, 1/2" x 3/4" Straight Water Main Vent Valve

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Water Main Vent Valve For use on hot or cold or glycol water mains andprocess applications with specific gravity greater than 0.7 Tapped at top for 1„8" NPT safety drain connectio nfor discharging moisture Removable top Built-in Check Valve 1„2" NPT female and 3„4" NPT male straight shank Maximum operating pressure 75 psig (5.2 bar)(Drop away pressure - maximum pressure against which the vent can open). Maximum hydrostatic pressure 200 psig (13.8 bar) Maximum temperature 250°F (121°C) Show more