UPVC Rubber Ring Joint Female Coupler for Water

Key Features

• Rubber ring + brass thread: rubber ring socket on one end, embedded brass female thread on the other.
• Reducing transition: socket diameter differs from thread diameter for size reduction.
• Brass insert: high thread strength, wear-resistant, reliable sealing.
• Easy installation: rubber ring end slides onto pipe; threaded end connects to metal fittings.

Manufacturing Process

Brass insert precisely positioned in mold during injection, overmolded with UPVC melt. Rubber ring groove machined in socket end. Smooth reducing transition.

Critical Process Parameters

• Socket rubber ring groove dimensional accuracy.
• Brass insert positioning accuracy and thread dimensions.
• Streamlined reducing section design.
• Bonding strength between brass insert and UPVC.

Raw Material Characteristics

• Material Composition: UPVC body, brass insert. Sealing ring: EPDM.
• Material Properties: UPVC corrosion and aging resistant. Brass threads with high mechanical strength. Suitable for cold water ≤45°C.

Typical Applications

• Reducing connection between UPVC rubber ring piping and metal water meters or valves.
• Connecting small-diameter metal threaded branches from large rubber ring mains.
• Plastic-to-metal transition for service line connections.

Application Scenarios

• Reducing transition connections between rubber ring piping and metal threaded fittings.