Plumbright 22 x 28mm Stem Coupler Reducer White plastic

Plumbright White Plastic Push-Fit 22mm x 28mm Stem Coupler Reducer (SPR6740M)

The Plumbright 22mm x 28mm Stem Coupler Reducer is a high-quality push-fit fitting designed to provide a secure, reliable transition between different pipe sizes within plumbing and heating systems. It delivers a fast, flame-free installation method, making it ideal for professional installers and DIY users working on modern central heating systems, hot and cold water services, and wet underfloor heating pipework.

Key Features and Benefits

• Push-fit design for quick, tool-free installation
• Creates a secure reducing connection between 22mm and 28mm pipework
• Suitable for hot and cold water systems and heating installations, including wet underfloor heating
• WRAS approved and manufactured to high industry standards
• Durable, corrosion-resistant construction for long-term system reliability
• Demountable and reusable without damaging pipework or fittings
• Secure locking indicator helps confirm correct installation

Suitable Applications and Compatibility

This stem coupler reducer is suitable for use in domestic and light commercial plumbing systems where a reliable transition between pipe sizes is required. It is compatible with standard plastic and barrier pipe systems and is commonly used in heating distribution pipework, central heating installations, and wet underfloor heating systems where efficient flow management and neat pipe routing are essential.

Role In Underfloor Heating

In a wet underfloor heating system, reducing couplers are used to connect different pipe sizes between manifolds, distribution lines, and system pipework. This ensures balanced flow rates and efficient heat delivery across multiple zones. Its push-fit design supports fast installation in tight service areas while maintaining a secure and leak-free connection.

Guidance

Ensure pipe ends are clean, cut square, and free from burrs before installation. Fully insert the pipe into the fitting until it reaches the internal stop to achieve a secure seal. Always verify compatibility with your pipe system and follow standard installation practices for sealed heating systems.

Technical Overview

• Connection type: Push-fit
• Fitting type: Stem coupler reducer
• Material: High-performance plastic composite
• System compatibility: Hot and cold water, sealed heating systems
• Approvals: WRAS approved
• Design: Demountable and reusable with secure connection indicator