Types of Water Shut-Off Valves​

Shut-Off Valve Connections

The types of water shut-off valves connect to supply lines in different ways, often dictated by the material of the connecting pipe. 

• PEX supply lines can use shut-off valves with barbed, compression or push-to-connect (PTC) fittings. Barbed fittings require the use of a crimp ring and a crimping tool to create a tight seal. Compression fittings can be connected using common homeowner tools. Push-to-connect fittings do not require any special installation tools.
• Copper supply lines can accommodate compression, PTC and sweat fittings. Sweat fittings must be soldered onto copper pipe.
• CPVC supply lines can use valves with threaded or PTC connections.
• Galvanized steel pipes can use valves with FIP (female iron pipe) connections that simply screw onto the supply line.

Tip: Beginner DIY homeowners may want to hire a professional to install sweat fittings that require using solder and flux with a propane torch to form a connection.