author: national board of boiler and pressure vessel inspectors

Relieving Capacities of Safety Valves and Relief Valves

Relieving Capacities of Safety Valves and Relief Valves
National Board of Boiler and Pressure Vessel Inspectors
Steam-boilers
... relief valves stamped with V symbol and letters " NB " are rated and stamped for relieving capacity at 10 % overpressure . Safety valves stamped with UV symbol and letters " NB " are rated and stamped for relieving capacity at 10 per ...

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