John Guest 12mm Fittings
John Guest is ideal for many DIY builds. John Guest Speedfit is an easy push-fit system suitable for the plumbing of hot and cold water services and for your larger appliances such as a Truma Combi 4e System.
John Guest 12mm Fittings Pipe Tolerances
These John Guest fittings are intended for pipes with outside diameters of 12mm to fit to rigid 12mm pipework.
Made compatible for 12mm John Guest pipe only. Not flexible hose.
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For More info Related to John Guest, see John Guests Official Site