Product Categories

PVC Spring Check / Swing Check

PVC Spring Check / Swing Check
Model: LD

PVC Check Valve

  • Model LD 807 Horizontal & Vertical Spring Check Valve
  • Model LD 818 Swing Check Valve with Flanged Ends

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

  • Engineered for maximum flow, quick response and positive shutoff.
  • Extra heavy duty construction with rigid PVC material.
  • Fully serviceable, replaceable components long life design.
  • 100% full flow design.
  • Rapid closure helps to eliminate sudden back-flow water hammer.
  • We recommend flanged end connections for joining a metal system to a plastic system. 
    We do not recommend the joining of metal male pipe threads with plastic female pipe threads

When installing flanges, it is critical that bolts be equally tightened in sequence which diametrically opposed to each other

 

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