Valves for waterworks purposes - Stem caps for use on isolating valves and associated water control apparatus. Specification Ingestion-build-207047 BS EN 636-1

BS EN 636-1

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Valves for waterworks purposes - Stem caps for use on isolating valves and associated water control apparatus. Specification Ingestion-build-207047 BS EN 636-11 Scope Isolating valves and hydrants installed in underground pipelines primarily carrying water intended for human consumption within the United Kingdom are required to be fitted with a stem cap to enable them to be operated by a ring key and bar or T shaped key. The stem cap is fitted to the top of the valve stem to convert the manufacturers stem configuration to mate with operating keys. Two sizes of stem cap are specified, covering respectively,