The Polyplumb straight coupler features a high performance stainless steel grab ring within the fitting to ensure a strong hold. Measuring 15mm in diameter, it can be used with polybutylene pipe or copper pipe systems. Polyplumb fittings are suitable for use in most plumbing and heating installations, including hot and cold water and underfloor heating systems.

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Diameter	15mm
Fitting Type	Straight Coupler
Supplier Website	https://www.polypipe.com/