John Guest Black PEI Speedfit fittings provide a convenient connection solution for whole-house water filtration systems. Made from durable engineered plastic and equipped with EPDM O-rings, these connectors are designed for use with compatible plastic, CPVC, and copper pipes. Available in 1/2″, 3/4″, and 1″ CTS sizes, they offer a practical option for a variety of water filtration installations.

Installation is straightforward: push the fitting onto the pipe until fully seated, then turn the plastic locking nut clockwise to secure the connection. To disconnect, loosen the nut, press the collet toward the fitting body, and pull the pipe free.

The push-fit design helps simplify installation and may reduce labor time compared with conventional connection methods. John Guest Speedfit fittings are designed, manufactured, and assembled in the United Kingdom.