PVCu Flanges

This comprehensive range of PVCu flanges and flange accessories offers a robust and leak-resistant solution for securely joining pipe sections in industrial and commercial systems. Available in sizes from 20mm to 315mm, the range includes complete flange sets as well as individual components such as gaskets, backing rings, and bolt kits. These components are WRAS and BSI Kitemark approved, ensuring safe use in potable water systems. Designed for long service life and compatibility with PVCu pipework, they are ideal for applications requiring periodic disassembly or maintenance access.

• Material: Unplasticised polyvinyl chloride (PVCu)
• Size Range: 20mm to 315mm
• Pressure Rating: up to 15 bar (depending on size)
• Operating Temperature: 5°C to 60°C
• Components Available:
• Flanges (plain and stub)
• Backing rings (galvanised, plastic, or stainless steel)
• Full-faced gaskets
• Bolt sets (zinc-plated or stainless steel)
• Approvals:
• WRAS Approved (Approval No. 1705080)
• BSI Kitemark Certified (Licence No. KM60041)
• Note: Not suitable for use with compressed air

• Component Preparation: Select a compatible flange, backing ring, gasket, and bolt set for the pipe size. Ensure all parts are free from debris, oil, or damage before assembly.
• Pipe and Flange Assembly: Solvent weld the stub flange to the pipe using PVCu cement and allow full curing (24 hours recommended). Slide the backing ring over the stub flange to sit flush against the raised face.
• Gasket Positioning: Place the gasket centrally between the flange faces, ensuring full coverage of the bore without obstructing flow.
• Bolt Assembly: Align the flange faces and insert bolts evenly. Use washers where applicable. Tighten bolts gradually in a star or criss-cross pattern to ensure even pressure distribution.
• Final Checks: Inspect the joint for even compression of the gasket and correct alignment. Pressure test the system only after all joints have cured and bolts are secure.
• Important Notes: Do not overtighten bolts, especially when using plastic backing rings. Avoid use in compressed air systems or high-impact applications.