Valves for waterworks purposes - Predominantly key-operated cast iron gate valves. Code of practice not-eligible 1 guides you with the

1 guides you with the test procedure and expression of results

d) magnetic testing (MT)

Note: BS 6907 does not cover temporary and provisional places of work in the open

Grading and cultivation

Valves for waterworks purposes - Predominantly key-operated cast iron gate valves. Code of practice not-eligible 1 guides you with the1 Scope This part of Bs 5163 gives guidance on selection, including reference to preferred features and operation, of cast iron gate valves, complying with Bs EN 10741 and Bs EN 10742, with flanged ends, that are ring key and bar operated. These valves are primarily for underground use for waterworks purposes and primarily for use with water intended for human consumption in the United Kingdom.