Check it out! New Mainline Faucet Collections!

8″ Twist-Tite Mechanical Wing Nut Test Plug

Model #: LX4402
  • Supports Copper, PEX, Polybutylene and CPVC Tubing
  • Isolates Supply Tubing from Wood Framing
  • Chemically Compatible with CPVC
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Water Heater Connector – 3/4″ FIP X 3/4″ PEX X 18″

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Why Mainline?

Because we know the industry.  Because we innovate for it.  Because we adapt to it.  Because we are constantly expanding our line to support your needs.  Because we help you propel each project with quality products fit for a PRO.

Mainline. Preferred by the Pros.

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