102h Flashcards
Two valve configurations
Single seat or single port
Double seat or double port
Does inlet pressure affect a double seat
No
Does the globe valve have the highest pressure drop
True
The needle valve is effective for regulating
Fluid flow
Do you throttle ball valves
No
Four Control Valve types are
One way valve
Two way valve
Three way valve
Four way valve
Pressure relief valves (PRV) are
Safety device
Do we use the gate valve in refrigeration
No
In what two applications do we use four way valves in refrigeration?
Heat pump and defrost control
Evaporator pressure regulator (EPR) valve is a
ORI = Open on rise of inlet
A crankcase pressure regulator can control what on compressor
Full load amps
If no FLA (Full load amps) you the
LRA (Locked rotar amps) / 6
A pressure differential valve provides a pressure difference between
2 points in a refrigeration system
What is a valves bonnet
The top cover of a valve
What is the purpose of a check valve
Fluid flow in one direction
