Model LD 807 Horizontal & Vertical Spring Check Valve
Single union design permits removal of valve body for service and maintenance.Self-sealing-stainless steel spring equipped not dependent on gravity.Rapid closure helps to eliminate sudden back-flow water hammer. Reliable back-flow prevention when installed vertically or horizontally.Quick and easy disassembly without use of special tools.
A check valve, is normally allows fluid to flow through it in only one direction. Check valves have two openings in the body, one for fluid to enter and the other for fluid to leave. Check valves work automatically and most are not controlled by a person or any external control. The check valve is designed for and can therefore be specified for a specific cracking pressure which is the minimum upstream pressure at which the valve will operate.
LD 818 Swing Check Valve with Flanged Ends
When installing flanges, it is critical that bolts be equally tightened in sequence which diametrically opposed to each other