John Guest is an ISO 14001 certified leading manufacturer of durable push-in fittings and pipe and plastic plumbing systems. The John Guest Fittings catalog includes water supply stops, push-to-connect tube fittings, check and foot valves, connectors and stop valve adapters. These products are ideal for applications in compressed air systems, water purification systems and drink vending machines.
Push-fit check valves by John Guest are widely used to facilitate liquid flow in one direction and to prevent back flow of liquid. These Super Speedfit Acetal Single Check Valves are suitable for use with polyethylene, nylon, polyurethane, brass, copper and mild steel tubings. They can withstand a maximum water pressure of 150 psi and can easily operate at temperatures up to 167 degrees Fahrenheit. The company also offers a wide range of male connectors suitable for potable liquids and pure water applications. These push-fit John Guest connectors feature acetal copolymer construction, NPTF threads and tube x MNPT connection, and do not require any tools for installation or removal.