Butterfly Valve Complete Set - Backing Ring
Technical Specification
- Materials: Unplasticised Polyvinyl Chloride (PVCu)
- Valve:
- Body & Disc: Unplasticised Polyvinyl Chloride (PVCu)
- Gasket: Ethylene Propylene Diene Terpolymer (EPDM)
- Stem: Zinc-plated Carbon Steel
- Backing Rings: Mild Steel
- Bolts: Bright Zinc Plated Steel
- Valve:
- Sizes: 2 1/2" to 6"
- Pressure Rating: 10 bar @ 20°C
- Temperature Range: 5°C to 60°C
- Flange Standard: PN10/16
- Connection Type: Solvent Weld/Bolted Flange
- Standards: WRAS-approved material
Description
This complete set provides everything required to assemble a flanged PVCu butterfly valve ready for installation into an imperial pipe system. It is designed for reliable isolation and flow regulation in low-to-medium pressure applications, offering smooth operation, excellent sealing performance and minimal pressure loss.
The PVCu valve body incorporates a high-flow disc design with an integral EPDM seal, delivering consistent shut-off and accurate flow control across the full operating range. Galvanised backing rings and a full set of BZP nuts, bolts and washers are included, with the quantity matched precisely to the number of bolt holes in each backing ring for straightforward assembly. Supplied unassembled, this kit allows installers to position and align components as required on site, making it ideal for both new installations and system modifications. It is suitable for use across water treatment, industrial process pipework and general fluid handling systems where corrosion resistance and long service life are essential.
For more information, please visit our PVCu Pressure Pipe Guide!
The product consists of the following parts:
- 1x PVCu ProFlow Butterfly Valve
- 2x PVCu Stub Flange Plain
- 1x Galvanised Steel PN10/16 Backing Rings
- 1, 2 or 3x Bright Zinc Plated Bolt Set (depending on size)
Key Features & Benefits
- Complete install-ready kit: Includes valve, stub flanges, backing rings and full bolt set in one package
- High-performance PVCu valve: Provides excellent corrosion resistance and smooth flow regulation
- EPDM integral seal: Ensures reliable sealing and long-term performance
- Flexible installation: Supplied unassembled to allow precise alignment during fitting
- Wide flange compatibility: Suitable for EN, ISO, DIN, ANSI and JIS drilling patterns
- Matched fixings supplied: Number of bolts, nuts and washers corresponds exactly to backing ring holes
- Broad size range: Available from 2 1/2" to 8" to suit a wide variety of systems
- Potable water suitable: Safe for use in drinking water applications

