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This Document Has Been Superseded
A newer publication replaces it: BSI BS EN 1171
Specification for cast iron gate valves
Specification for Cast Iron Gate Valves
This document outlines the technical requirements and guidelines for the manufacture, testing, and application of cast iron gate valves.
Materials: The valves shall be made from high-quality cast iron, ensuring durability and resistance to corrosion.
Design: Gate valves must be designed to provide tight shutoff and minimal pressure drop when fully open. The gates should be machined to fit precisely within the valve body.
Standards and Compliance: All valves must conform to relevant industry standards, including ISO and ANSI specifications applicable to gate valves.
Testing: Each valve must undergo hydrostatic pressure testing and operational tests to ensure functionality and leak-tight performance.
Applications: The valves are suitable for use in water, waste, and other non-corrosive fluid systems requiring reliable flow control.
Requirements for flanged and threaded end valves for general purposes in sizes DN 10 to DN 1000 for flange valves and ½ to 6 for threaded end valves.
These valves are for nominal pressures in the range PN 6 to PN 25.
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