1.1 This specification covers the design, construction, testing, and operating requirements for hand-operated, quick-change cartridge trim, in-line body and angle-body, globe-style valves for use in gas (except oxygen gas) and hydraulic systems. These valves may be used for on-off, and/or throttling applications.

1.2 The values stated in this specification in inch-pound units are to be regarded as the standard. The SI equivalents shown in parenthesis are provided for information only.