JG ProLock Pipe Joining System

JG ProLock Fittings, from John Guest, is a new Twist-to-Lock pipe-joining system that cuts installation time by 40%. With unprecedented pipe engagement, and a state-of-the-art thermoplastic material, the fittings provide a secondary failsafe locking mechanism that leaves no doubt that the fitting is secured. ProLock fittings are approved for use with Copper, PEX or CPVC and can be used in behind- the-wall installations without the need for access panels*. No tools are required to install or remove ProLock fittings, only a pipe cutter to cut the tubing is needed. ProLock fittings carry a 25 year warranty against manufacturing or material defects and have been approved for use in hot and cold water plumbing and hydronic heating applications.


Features & Benefits:

  • Certified for ASSE1061 and NSF61(G)
  • In compliance with the UPC®, IPC® & National Plumbing Code of Canada
  • Audible click sound and visible alignment arrows assure a secure fit
  • Connects to copper, PEX and CPVC; available in tube sizes (CTS) 3/8” through 1”
  • Advanced thermoplastic material outperforms copper in extreme conditions
  • No tools or master installer needed for installation
  • 45% more insertion depth
  • Cuts time of installation by 40%


Call John Guest at 800-945-4872 

* Installer should consult with local plumbing codes prior to installation.