Bmoorthy, as implied by mr Anegri if you read both the 'Shell spec 77/312' and 'TA LUFT' both require testing for extrenal leakage only.

what codes talk about the required information in the Maintenance calibration Name plate?

A little issue with our process drains and are now forced to pipe a safety/relief valve to a common header in order avoid further damage.

Recoverable losses (such as due to velocity change in an enlarger) are NOT considered in pressure drop calculations for the inlet piping for a relief valve (API RP 520).

In thread408-48267: Double-Block Valves and Double Block and Bleed Valve on 10Mar03, davefitz (Mechanical) posted a comment stating,"double block and bleed is required by code in section I (boiler) se

i have to purchase a valve to isolate a 30'' outline located at the bottom of a storage tank of Bunker150000Brales.

When purchasing valves from a valve company is leak testing of valves by a supplier usual practice or a requirement of a standard? (Not pressure testing, just checking if there is any leakage over the

I am trying to determine the inlet pressure to a throttle valve.