Search Results for: control valves
- Field Instrumentation
What is a pump?
A pump can be described as a device that can transfer or raise the fluids, this device can also be…
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What is a subsurface safety valve?
The chances of uncontrolled flow in a wellhead are really high, so a subsurface valve is used to prevent this…
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What is an automatic recirculating valve and where is it used?
The automatic recirculating valve is a type of control valve for the protection of centrifugal pumps. So this valve can…
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What is a reversing valve?
A reversing valve can be seen in a heat pump, because of its ability to reverse the direction of the…
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What is a pressure surge in a pipeline and how to do the surge analysis?
What is a pressure surge or water hammer and what causes them? The pressure surge could happen in a pipeline…
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What is an expansion valve?
These valves are used to control the refrigerant flow in a refrigeration system. Expansion valves are used to decrease or…
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What is a balancing valve?
What is a balanced system and what is the need for balancing? A balanced system can be defined as a…
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What is a counterbalance valve?
This type of valve would allow the flow in one direction and it would restrict the flow in the opposite…
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What is a servo valve?
A servo valve can vary the fluid flow according to the changes in the load motion. Servo valves can control…
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What is a rotary airlock valve?
A rotary valve can be classified as a type of spool valve and in this valve, the ports would run…
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