
John Guest Plumbing & Marine Fittings
As the world’s leading manufacturer of push-in pipe fittings, John Guest has been pioneering revolutionary plastics manufacturing technologies since the early 1970’s.
Fittings for Plumbing and Heating Systems
JG Speedfit ® is an advanced push-in fitting featuring twist & lock technology that is suitable for the plumbing of normal domestic hot and cold water lines, including pressurized and combination systems. Whether your application is for fresh water, raw water , gray water, or potable water; John Guest push-in fittings meet the high demands of the Plumbing and Marine Market. Speedfit ® Fittings have been designed for use with Copper Pipe, Speedfit ® Pex Pipe, CPVC, and other PEX Pipe conforming to US Plumbing Standards.

Performance specifications are well within thse required for most normal domestic water supply systems including:
- Main water suply line and indirect cold water systems
- Vented and unvented hot water systems
- Vented central heating systems
Extensive tests have shown that Speedfit ® products will withstand temperatures and pressures in excess of normal working conditions. JG Speedfit ® should be installed to conform with good plumbing practice.
The products below should not be used for gas, fuel oil, or compressed air applications.
Installation Benefits
- Works with copper, CPVC, and PEX
- No tools required
- Installation time reduced by 40%
- Grip and seal connection
- Superseal® Insert gives a secondary seal
- Reduced pipe insertion force
- Disassemble without damage to pipe or fitting
- Easy to use in confined spaces
Applications for Plumbing/Marine Fittings
- Boats: The flexibility of the Speedfit ® System ensures it can be cabled easily around the interior and hidden from view.
- RV: Speedfit ® is ideal for RV installations due to its flexibility and its resistance to corrosion and freezing.
- Exhibitions: The unique ability of the Speedfit ® System to be easily disassembled and reused, together with its flexibility, makes Speedfit ® ideal for this application.
- Portable Buildings (offices, toilets): As with RV’s, Speedfit ® is well suited for these applications.
- Agricultural and Horticultural: Speedfit ® has many applications in agricultural and horticultural environments.
