Vacuum technology. Valves. Leak testBS ISO 27895: 2009 Vacuum technology. Valves. Leak test BS ISO 27895 specifies methods for the leak testing of vacuum valves used for control of gas flow or vacuum pressure in a vacuum system. It is applicable to vacuum valves that can be closed to leak rates less than 1 105 Pa m3 s for trace gas. The methods employ a sealing arrangement for the valve body, which is also given. The methods are suitable for the verification of valve specifications. A

commercial or light-industrial

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PAS 402:2013 Waste resource management

Material sheets

BS EN 15558 specifies a method for the determination of nitrate and ammoniacal nitrogen with reduction according to Ulsch

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Principles for structural design

Contents of BS EN 13035-5:

methods and retests)

The capability of the filter element to maintain a specified fluid cleanliness level depends on its performance and structural integrity and its ability to withstand non-steady-state conditions (e

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It may also apply to non-metallic products and is used in conjunction with information about the manufacturing conditions