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Butterfly weld ends 2010-11-10
Is it normal to have Butt weld end connections on lower class valves. Specifically an ANSI class 150 300mm valve.
leaking gas pipe freeze 2010-11-10
Why leaking natural gas pipes/valves freeze.This phenomena in wet-gas (i.e., not dehydrated) service.
Hydrostatic Torque 2010-11-10
Cosmos Floworks to model and measure the hydrostatic torque that the flow of air would have on the disk of a butterfly damper.
Butterfly Damper Torque 2010-11-10
Trying to size the actuator required to operate my Eccentric Butterfly Damper. To do so, I am trying to determine the Hydroynamic Torque that air flow would induce in the damper's installed state.
Actuator Torque for Butterfly Damper 2010-11-10
Trying to determine the actuator torque required for my metal seated, eccentric (meaning offset) butterfly damper.
Buterrfly: Soft vs Hard seats 2010-11-09
A butterfly valve on LP Nitrogen and Instrument Air (9 barg @ 85ºC) with hard seats (SS 316L).What will stop me on changing it to Soft Seats (PTFE)?
Broken valve stem 2010-11-09
If a valve stem is broken, can it be welded back together in field?If the welded area goes through the packing, he packing will be destroyed on the first stroke.
3" throgh 6" rubber seated butterfly valve popping out of seat 2010-11-09
3", 4" and 6" butterfly valves with double acting air to air actuators on them. The valve seat is a dovetail design.
