Pumps/valves Flashcards
Best pump for hydraulics and isn’t affected by contamination?
gear pump (NSTM 556)
What are two types of gate valves?
Wedge and parallel
What valve can do 3 positions of operation ?
Globe valve
Over tightening valve packing can cause what?
Seized stem
How do you install check valves?
Horizontally
In what direction must check valves with swing flaps be mounted?
Install check valves so the disc or ball will open with the desired direction of flow?
Instal valves with the stem in what position?
Upright position
What valve controls the next movement in a hydraulic circuit?
Flow control valve/ directional control valve (dcv)
What is the max suction from the surface of the water to center line of the pump?
The static lift must not exceed 22ft from the center of the pump t the surface of the water. A lift not exceeding 10ft is recommended
A cross fitting has (blank) connections at (blank) degrees?
4 openings at 90 degrees
The best fitting to create a piping branch?
“T” fitting
What fitting is used to install a smaller pipe to a larger fitting?
Reducer bushing
What is in a piping system that allows you to remove a component?
Union
What is the name of a valve that typically opens at 90 degrees?
Butterfly valve
What is the downside to a centrifugal pump?
Not good for high lift operations
