Outlet Stop Valves
Stop Valves or Outlet Valves are used in plumbing applications to shut off the hot and/or cold water flow to a fixture and are installed in between the water lines which stub out of the walls (floors) and the fixture itself.
Stop valves allow to perform routine maintenance such as filter change, drain cleaning, etc., as well as to make minor repairs to the fixture itself - changing gaskets or water supply connector/riser.
Stop valves are available in compression, sweat (solder) and threaded inlet connection types in both angle and straight options with 1/4-turn or multi-turn handle types.
Lead-Free Compliance: All supply stop valves sold at PexUniverse.com are in compliance with 2014 SDWA (Safe Drinking Water Act) lead-free requirements for plumbing applications and are certified to NSF/ANSI 372 standard.
To view our selection of PEX stop valves, click here.
Frequently Asked Questions:
Q: 1/4-turn vs. Multi-Turn stop valves - whats the difference?
A: 1/4-turn valves are miniature ball valves, whereas multi-turn type are more of a globe valve type. The former are easier to operate and provide a visual shut-off confirmation. In addition, 1/4-turn stop valves do not have packing nuts/washers which almost completely eliminates chances of leakage, and they do not have a plastic stem which is prone to breakage.
Note that while multi-turn outlet valves are approved everywhere in the US, the 1/4-turn may not be allowed by some local codes or may require installation of water hammer arrestors.
Q: Compression vs. Sweat vs. Threaded - which outlet valve is the the best?
A: Compression type is the most popular among all 3 since it does not require soldering, easy to replace and provides the most aesthetically pleasing appearance. Sweat stop valves ensure the most reliable connection of all, but are harder to replace and require experience and tools for soldering. Threaded stop valves are the least popular and are generally installed in conjunction with the older threaded brass pipes which stub out form the wall.
Q: Are 5/8" OD compression valves compatible with 1/2" copper pipes?
A: Yes. Any type of regular 1/2" copper pipe (US ASTM standard B88), whether K, L or M has an OD (outside diameter) of 5/8" and is therefore compatible with stop valves which have a 5/8" OD compression inlet.
Q: What kind of connectors should I use with these valves?
A: The most typical are steel/polymer braided connectors (highest price, best flexibility and good reliability), plated or unplated copper risers (medium priced, least flexible and arguably most reliable) and PEX risers (adequately flexible and economical version).