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DIN EN ISO 10497:2021 Edition

DIN EN ISO 10497:2021 Edition

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Testing of valves – Fire type-testing requirements (Draft)

Published By Publication Date Number of Pages
DIN 2021-07 52
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This document specifies fire type-testing requirements and a fire type-test method for valves with one or more obturators. It is not applicable to the testing requirements for valve actuators other than manually operated gearboxes or similar mechanisms when these form part of the normal valve assembly. Other types of valve actuators (e. g. electrical, pneumatic or hydraulic) can need special protection to operate in the environment considered in this valve test, and the fire testing of such actuators is outside the scope of this document. This document specifies the measurement and assessment criteria for: a) through-seat leakage; b) external leakage; c) cavity overpressure relief of double seated valves; d) operability. This document specifies the rules whereby the fire-type testing qualification for a valve can be extended to untested sizes, pressure ratings, and materials of construction of the same basic design type.

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DIN EN ISO 10497
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