What is BS 5353 - Specification for steel plug valves about?

BS 5353 is a British standard that 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.

BS 5353 also specifies anti-static requirements, an optional fire tested design and the option of a steel or cast-iron plug. BS 5353 applies to short, regular, or venturi pattern valves. The range of valves covered by BS 5353 is given in Table 1.

Note: 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 BS 5353.

Who is BS 5353 - Specification for steel plug valves for?

BS 5353 on specification for steel plug valves is useful for:

The oilfield industry
The transportation industry
The chemical industry
The coal gas industry
The HVAC industry
Quality assurance/inspection managers

Why should you use BS 5353 - Specification for steel plug valves?

Pressure/temperature ratings of the soft seated valve are dependent on both the body rating and the pressure capability of the seats. Seat pressure capability will be limited by the strength of the seat material, particularly by the loss of strength which may occur at elevated temperatures. The applicable valve pressure rating at any temperature will, therefore, be limited by either the body rating or the seat rating.

Throughout BS 5353 those dimensions shown in parentheses are non-preferred. The non-preferred sizes are given for the replacement of existing valves; they are not recommended for new pipework systems. BS 5353 provides its users with instructions for the operation and test methods for quality assurance to maintain high quality and durability. Using BS 5353 guidelines ensures reliable and safe equipment for longer service life for its users.

What’s changed since the last update?

BS 5353:1989 supersedes BS 5353:1980, which is withdrawn. BS 5353:1989 includes some technical changes with respect to BS 5353:1980. These include:

Class 400 valves have been omitted
The range of sizes for PN designated valves has been extended to nominal sizes up to and including DN 600
Details of socket-weld end dimensions are included
A greater choice of materials is available for the pressure-containing shell and some additional requirements are given for trim component materials
Details of anti-static testing are included and reference is made to BS 6755-1 for production pressure testing. Pressure test durations have changed

BS 5353:1989

Specification for steel plug valves

Current

Published:

28 Feb 1989