Double check valves ensure the prevention of contamination arising from back syphonage, back flow and cross connection. a spring-loaded internal check valve is sited either side of the test cock and an arrow identifies the direction of flow. the low headloss design and fast installation time make this unit the ideal selection. the valve can be mounted in any position. the valve can also be used for domestic hot and cold water supplies. for use with liquids only. 15mm. order multiples of 50 only.
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