Over deze norm
1.1 This specification covers self-contained, internally operated, globe style, pressure-reducing valves for use in steam service. In these valves, the downstream pressure feedback is sensed by a spring-loaded diaphragm to position a pilot valve—the pilot valve uses the inlet steam pressure to position the main valve plug via an operating piston.
|Nederlandse titel||Standard Specification for Pressure-Reducing Valves for Steam Service|
|Engelse titel||Standard Specification for Pressure-Reducing Valves for Steam Service|