Specification for steel and copper alloy wafer check valves, single-disk, spring-loaded type.
STANDARD published on 31.5.1991
Designation standards: BS 7438:1991
Note: WITHDRAWN
Publication date standards: 31.5.1991
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: British technical standard
Category: Technical standards BS