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Search results with tag "Metal seated valves"
GUIDANCE ON VALVE TYPE SELECTION -b.ricardo
blog.projectmaterials.com1. Soft seated valves should normally be selected only for clean service. Soft seated block valves, such as ball valves, lined plug valves, soft seated gate valves, and butterfly valves can provide a good tight shut off on gas or liquid when new. Hard metal seated valves should normally be selected if the service is other than clean. 2.
Metal & Soft Seated Valve Leakage Acceptance Rates ...
globalsupplyline.com.auGLOBAL SUPPLY LINE be specifi ed to BS 6755 (now EN 12266-1) and ISO 5208 under special zero leakage classes. However, metal seated valves usually have some level of acceptable leakage when tested, defi ned fi rst as some acceptable amount of liquid,