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Butterfly valves for flow balancing through parallel chiller circuits 2010-10-22
how butterfly valves will perform as good as DRVs ( double regulating valves) in flow balancing through parallel chiller(er) water circuits.The butterfly valve I had is 10 diameter.
Butterfly valves to match flange types 2010-10-22
The valve installed is a Euro Manu'f. valve based on the manu'f. valve "Data Tag". DN 100 translates as 100mm valve - 3.937" close enough to 4".
Plug valve vs. butterfly valve for manual balancing 2010-10-22
Butterfly valves have a huge Cv for their size. Thus they have a reputation for having a quick-open characteristic.
Triple eccentric butterfly valves 2010-10-22
Triple eccentric means First eccentric is the offset between the shaft centre line and the disc trunnion centre line.
Double arrangement/48-inch butterfly valves 2010-10-22
A double block and bleed is a different valve arangement. It is typically used to prevent backflow in case of some type of equipment failure.
Actuator replacement 2010-10-21
Changing the actuator of ON/OFF valves. We have many on/off valve in our gas treatment plant and some actuators were damaged and need to use spare parts for some of them and some item we will replace
Discussion on triple offset valve 2010-10-21
A triple offset valve is a rotary, butterfly-style valve. A standard butterfly has no offset: THe shaft and vane are coincident with the centerline of the pipe.
Sand Filter Air Scour Valving and check valves. 2010-10-21
Is a check valve necessary after the control valve? If so what type is typically used? I was considering a swing check because it has low air flow restriction but has to be mounted horizontally and ta
