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ASTM material spec for PTFE v-ring packing 2010-10-28
I don't think there is an ASME spec for the packing. The pervasive practice in the industry is to call out the spec number from the packing manufacturer used,
Design pump minimum flow line by Relief valve 2010-10-28
For the minimum amount of time that the pump is operating, it would probably be a better to design to omit the relief valve entirely and use a constant recirculation line with an appropriately sized o
Valve Open Area Calc From Thottled Valve Cv 2010-10-28
Cv is proportional to the open area and a disch coeff.the problem with ball valves is that they are classified as high recovery valves. Check Appendix A, Crane Technical Paper 410.
Fixed Roof Tanks 2010-10-28
Distinction if any between Pressure/Vacuum relief Valves and Breather Valves.Breather Valve = Pressure Relief Valve + Vacuum Relief Valve,A Breather valve for a tank requiring IN-breathing and OUT-br
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.
