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ASTM-F1565:2006 Edition(Redline)

ASTM-F1565:2006 Edition(Redline)

$26.65

F1565-00(2006) Standard Specification for Pressure-Reducing Valves for Steam Service (Redline)

Published By Publication Date Number of Pages
ASTM 2006 11
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Abstract

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. The valves shall be of the following compositions: Composition B made with 1.25% chromium, 0.5% molybdenum and Composition B made with carbon steel. All materials shall be selected to prevent corrosion, galling, seizing, and excessive wear or erosion where applicable. Clearances shall prevent interference as a result of the thermal expansion. Cadmium plating is prohibited. Components of these valves shall include body, bonnet, bottom cover, internal trim, cylinder liner, piston, gaskets, diaphragm, springs, and bolts. Valves will be operated, maintained, and repaired on board ships and shall emphasize simplicity, maintainability, ruggedness, and reliability. Design shall permit access for adjustment and repair when working from either side of the valve and without requiring removal of the valve body from the line. Each production valve shall be subjected to the following tests: nondestructive test, hydrostatic test, seat tightness test, and external leakage test.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

A105/A105M Specification for Carbon Steel Forgings for Piping Applications A182/A182M Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

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