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Specification for steel plug valves
This British Standard specifies requirements for the valve seat and body pressure/temperature ratings and the design, including materials, dimensions, operation, performance, testing and marking of lubricated, and soft seated and lined plug valves having a steel shell with specified shell wall thickness.
This standard also specifies anti-static requirements, an optional fire tested design and the option of a steel or cast iron plug.
It applies to short, regular or venturi pattern valves. The range of valves covered by this standard are given in Table 1 (see also clause 4).
Pressure/temperature ratings of the linings of lined valves and flange attachment methods, other than those specified in 8.4, are outside the scope of this standard.
NOTE 1 The information to be supplied by the purchaser at the time of the enquiry/order is given in Appendix A.
Appendix B shows typical weld-end preparations. Examples of typical plug valve constructions are contained in Appendix C.
NOTE 2 The titles of the publications referred to in this standard are listed on page 20.
Design, materials, dimensions, pressure/temperature ratings, wall thicknesses, testing and marking of lubricated, and soft seated and lined valves.
Gives requirements for anti-static features plus the option of a fire tested design.
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