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Free Samples
See the finish before you commit
Trade Account
Trade prices on every range
Expert Advice
Speak to our team · 020 4634 2203
Free Delivery
On orders over £300
Sold By The m²
Calculator on every tile and floor
Klarna & PayPal
Spread the cost, subject to status

Trade Prices
Always trade prices, never retail markup.
UK Delivery
£50 flat rate • up to 20 business days.
FENSA Fitting
Professional install available.
by Linx Square
SKU: 168349
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Linx Square
inc. VAT

Linx Square
inc. VAT

Linx Square
inc. VAT

Linx Square
inc. VAT
Plumbright White Plastic Push-Fit 15mm x 28mm Stem Coupler Reducer (SPR6760M) The Plumbright 15mm x 28mm Stem Coupler Reducer is a reliable push-fit plumbing fitting designed to provide a secure, leak-resistant connection between different pipe sizes. It offers a fast, flame-free installation solution ideal for professional plumbers and competent DIY installers working on central heating systems, hot and cold water services, and wet underfloor heating systems. Key Features and Benefits Push-fit technology enables quick, tool-free installation Creates a secure reducing connection between 15mm 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-lasting performance Demountable and reusable for flexibility during installation and maintenance Secure locking indicator helps confirm correct installation Suitable Applications and Compatibility This stem coupler reducer is suitable for domestic and light commercial plumbing systems where a reliable transition between different pipe sizes is required. It is compatible with standard plastic and barrier pipe systems and is commonly used in heating distribution pipework, manifold connections, and wet underfloor heating systems where efficient flow control and neat routing are essential. Role In Underfloor Heating Within a wet underfloor heating system, reducing couplers are used to connect different pipe sizes between manifolds, distribution pipework, and heating circuits. This ensures consistent flow rates and helps maintain balanced heat output across multiple zones. Its push-fit design allows for quick installation in confined or difficult-to-access areas while maintaining a secure, leak-free connection. Guidance Ensure pipe ends are clean, cut square, and free from burrs before installation. Push the pipe fully into the fitting until it reaches the internal stop to achieve a secure seal. Always verify compatibility with the pipe system being used 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 :