Please Define
Cavitation
When a flowing liquid goes below it's Vapor Pressure and recovers back above the Vapor Pressure.
A valve that flies
Butterfly
Linear component of a globe valve
Stem/Plug
Recommended supply air in plant.
60 PSI
Type of valve with lowest delta P when fully open
Full ported ball valve - tunnel bore
Flashing
When a flowing liquid goes below it's Vapor Pressure and stays below the Vapor Pressure on recovery.
A gate valve that cuts
Knife Gate
Lives In A Box
Packing
Flow that has entrained solids
slurry
Vena Contracta
The flow at its highest velocity and lowest pressure.
The "Worldly Valve"
Globe Valve
Plug - Stem - Seat Ring =
Trim
Flow that is a combination of liquid and gas
Two Phase
CV Definition
The number of gallons of water per minute that flow across an orifice with a 1 pound pressure drop.
US gallons at 60 F
The sharpest of all valves
Needle Valve
The Brains of the CV
Positioner
Is a liquid with high viscosity "thick or thin?"
Thick
CV Equation
Flow (Q) x's Square Root of S.G./Delta P
Valve that shares the name of a contraceptive
Diaphragm Valve.
The muscle of the CV
Actuator
Define Design P&T vs Op P&T
Operating = actual P&T valve sees day to day
Design = what the valve "could" see worst case