Butterfly Valve Series

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Length of Studs 2010-11-01
What ASME Standard(s) call out the length of a stud? I recollect that somewhere a non-pressure retaining stud is measured end-to-end
Butterfly valve disc material for slurry service 2010-11-01
We are using butterfly valves to throttle limestone and calcium sulphate slurry flow in 4" and 6" pipes, not the ideal application for this type of valves I realize.
Critical valve 2010-10-29
The valves in following services will be considered critical (in the opinion of our Contractor):
Deaerator Bursting Disc Noise Problems 2010-10-29
We have large deaerators in our generating station that have a rupture disc on them (approx 10"). Ocassionally one will blow up a pipe through the roof.
Pump running in SF 2010-10-29
10hp down hole centrifugal pump.Set at about 70 feet.Pressure measured and found at center of BEP.Rated flow 90g/min.
Selection of Pump 2010-10-29
For Heater charge , we have two pumps ( Pneumatic and electric diaphragm pumps both are motor driven) .
Looking for confirmation on an NPSH 2010-10-29
A calculation involving a centrifugal pumping from vacuum vessel.Fluid: Water @ 180 DegF.Fluid Density: 0.970
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,
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