Swing check valves use a hinged disc that swings open under forward flow and drops shut the instant flow reverses. They give the lowest pressure drop of any check design on water and larger-diameter lines, which is why they are the default backflow protection for pump discharge, municipal water, HVAC, and irrigation mains. Apex Flow Solutions stocks swing check valves from 1/2 in. threaded brass up through large-diameter ductile iron flanged bodies, sold by the single unit.
-
3 in. Brass Swing Check Valve, 200 lb (940359) -
3 in. Ductile Iron Swing Check Valve, Flanged — UL/FM (96203UL) -
4 in. Lead-Free Brass Swing Check Valve, IPS Threaded | 940360LF -
4 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 (962004) -
4 in. Ductile Iron Swing Check Valve, Lever & Weight — AWWA C508 (96204LW) -
4 in. Brass Swing Check Valve, 200 lb (940360) -
4 in. Ductile Iron Swing Check Valve, Flanged — UL/FM (96204UL) -
6 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 (962006) -
6 in. Ductile Iron Swing Check Valve, Lever & Weight — AWWA C508 (96206LW) -
6 in. Ductile Iron Swing Check Valve, Flanged — UL/FM (96206UL) -
8 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 (962008) -
8 in. Ductile Iron Swing Check Valve, Lever & Weight — AWWA C508 (96208LW) -
8 in. Ductile Iron Swing Check Valve, Flanged — UL/FM (96208UL) -
10 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 (962010)
