Large bore copper stopend designed for sealing 28mm copper tubes in commercial heating and hot water systems. Robust construction for high-pressure applications. Tube size: 28mm internal diameter Application: Large bore pipe sealing Specification: BS EN 1254-1 standard Working pressure: 25 bar capacity Water systems: WRAS certified Joint: Capillary end feed soldering Embrass Peerless is a well-established UK plumbing fittings manufacturer, supplying the trade with quality copper fittings, valves, waste fittings, and drainage products trusted by plumbers and heating engineers. Product reference:Part number: 434416. EAN: 5055967908116. APM Plumbing & Electrical - West London's trade electrical and plumbing merchant. Visit us at our Acton trade counter or order online at apmi.uk. Call us on 020 8702 8080.