Product Review

A continuous pressure type with intermediate vent. Particularly recommended for boiler feed lines to prevent backflow should supply pressure fall below system pressure. Primary check valve features rubber-to-rubber seating for tight closure. Leakage is vented to atmosphere should the downstream check foul. Brass body with stainless steel and durable rubber working parts. Female union connections. Maximum temp. 225°F. No. 9D Female union inlet and outlet connections.