Full Description

This document is a reissue of SP-67-2002.

1. SCOPE

1.1 This Standard Practice covers dimensions, design, testing, and marking requirements for butterfly valves. Further reference should be made to MSS SP-68.

1.2 This Standard Practice covers two types fo butterfly valves:

Type I - Valves for tight shut-off (tested per subsection 10.2.1)

Type II - Valves permitting seat leakage (see subsection 10.2.2)

1.3 This Standard Practice covers flangeless (wafer-type), single flange (lug-type), and flanged end valves in sizes 1 NPS through 72 NPS, grooved end valves, and shouldered end valves with pressure ratings in accordance with the requirements of Sections 3 and 4.

Product Details

Published: 07/19/2004 Number of Pages: 19 File Size: 1 file , 3.7 MB