Valves

20+ products

Expected delivery: Tue, Nov 17

Valves for shutting off, isolating and controlling flow in water, air and process lines. This subcategory includes ball valves in brass, stainless and PVC, gate and globe valves, swing and spring check valves, angle and straight stop valves, hose bibbs, drain valves and boiler drains. End connections include NPT threaded, sweat, solvent weld, compression and push-to-connect.

What to check before you order

  • Valve type for the job. Ball valves give quick quarter-turn shutoff. Gate valves are made for full open or closed service. Globe valves are used for throttling. Check valves stop backflow.
  • Pressure and temperature rating. Valves are often marked with a WOG (water, oil, gas) or CWP (cold working pressure) rating. Stay within the marked rating.
  • Material and lead-free status. Brass is common for water and air. PVC suits cold water and many chemicals. Valves on drinking water should be marked lead free.
  • Port size. Full port ball valves have the same bore as the pipe for less flow restriction. Standard port valves have a smaller bore.
  • Gas service. Use valves marked for gas service on gas lines, and have gas work done by a qualified person to code.

Adapters and nipples are in pipe fittings, air system valves and regulators are in regulators, gauges and cylinders, and more is in plumbing.

Common questions

How can I tell if a ball valve is open or closed?

The handle lines up with the pipe when the valve is open and sits across the pipe when closed. A quarter turn moves it between the two.

What is the difference between a swing check and a spring check valve?

A swing check uses a hinged disc that closes by gravity and back pressure, which limits mounting position. A spring check closes faster and allows more positions. Point the flow arrow with the flow and follow the maker's orientation limits.

Popular valves

More in Plumbing