Pressure Balance Type Plug Valve

[onrush]

Dear Members,

What is the main difference between pressure balance type and non-pressure balance type plug valves with respect to their function?

thanks in advance...

 

[insult2injury]

One of the main differences is the amount of force required to actuate the valve which affects actuator size/cost.

I2I

 

[vzeos]

onrush,
See page 5 of the attached catalog.

http://www2.flowserve.com/vgnfiles/...terature/FlowControl/Nordstrom/NVENBR1004.pdf