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Check Valves

Check valves stop backflow and keep the line moving the right way. Most buyers are looking for the right type, pattern and material for the duty, whether that is pump discharge, water services or dirty line work.


Key points
  • Non return valve and check valve mean the same job here.
  • Spring, swing, dual plate and ball patterns suit different line conditions.
  • Wafer pattern saves space where face-to-face matters.
  • WRAS comes into play on potable water work.
  • Cracking pressure and installation position belong in the product spec, not guesswork.


Overview
This collection covers industrial check valves for backflow prevention across water, process and mechanical services systems. Sorted by size, connection pattern, material and valve type.


Applications
Found on pump sets, boosted water lines, heating and cooling systems, plantroom pipework and wastewater duties. Some jobs need a compact wafer valve between flanges. Others need a screwed or flanged body for service access or line conditions.


Materials / Types
Spring check valves suit faster response and tighter shut-off. Swing checks are common on larger water lines. Dual plate valves keep the body compact in flanged systems. Ball check valves earn their place on duties where solids or fouling are part of the problem. Material is usually brass, stainless, cast iron or ductile iron.


Selection Notes
Match the valve type to the flow conditions first, then check the end connection. Wafer, screwed BSP and flanged PN16 are the main routes, with ANSI options where stocked. If the job calls for WRAS, keep that front and centre.

 

70 products