18/30373013 DC
BS EN ISO 21922. Refrigerating systems and heat pumps. Valves. Requirements, testing and marking
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18/30373013 DC
Standard No.
18/30373013 DC
Release Date
2018
Published By
British Standards Institution (BSI)
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18/30373013 DC
18/30373013 DC history
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18/30373013 DC
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