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Restricted Orifice- After control valve 2010-10-28
Going through one P&ID of gas processing facility I have been working. What are the reasons behind placing RO-restricted orifice after control valve/valve?
Short Body Check Valve 2010-10-27
Need a 42 inch swing check valve for raw sewage service. Due to piping limitations, I am looking for a short body (such as wafer style) swing check valve for sewage application.
Fireproofing E.I.V.s 2010-10-27
Working on a project and wondering on why is it necessary for there to be "long bolted" valves? For example I noticed long bolted wafer valves in a fire hazard the bolt melt off and simply leak materi
Lug / Wafer Type Butterfly Valves 2010-10-27
The difference between the lug and wafer type butterfly valves and when are these specified? I can't seem to find a clear definition of each.
Stellite or Kolsteriling hard face 2010-10-27
The difference beetwen KOLSTERISING hard face treatment and STELLITE.Stellite is a commercial name of a cobalt-chrome alloy available in different grades and with high wear resistance features
38" triple-offset butterfly valve passing 2010-10-27
6 pcs of 38" triple-offset butterfly valves are passing (more than 50% of number installed). The valves worked fine for about 12 months. Increasing the torque from 75% to 100% didn't help.
DP transmitter impulse line purging 2010-10-26
Further to the comment about the rotameter: there are "Purge rotameters" with constant flow controllers that modulate to hod a pretty constant flowrate even if the purge pressure varies.
All thread roods 2010-10-26
I work in a large oil refinery. Our piping specifications are quite specific that piping flanges should be connected using studs, not bolts.
