Pumps/valves

Question 1

Best pump for hydraulics and isn’t affected by contamination?

Answer 1

gear pump (NSTM 556)

Question 2

What are two types of gate valves?

Answer 2

Wedge and parallel

Question 3

What valve can do 3 positions of operation ?

Answer 3

Globe valve

Question 4

Over tightening valve packing can cause what?

Answer 4

Seized stem

Question 5

How do you install check valves?

Answer 5

Horizontally

Question 6

In what direction must check valves with swing flaps be mounted?

Answer 6

Install check valves so the disc or ball will open with the desired direction of flow?

Question 7

Instal valves with the stem in what position?

Answer 7

Upright position

Question 8

What valve controls the next movement in a hydraulic circuit?

Answer 8

Flow control valve/ directional control valve (dcv)

Question 9

What is the max suction from the surface of the water to center line of the pump?

Answer 9

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

Question 10

A cross fitting has (blank) connections at (blank) degrees?

Answer 10

4 openings at 90 degrees

Question 11

The best fitting to create a piping branch?

Answer 11

“T” fitting

Question 12

What fitting is used to install a smaller pipe to a larger fitting?

Answer 12

Reducer bushing

Question 13

What is in a piping system that allows you to remove a component?

Answer 13

Union

Question 14

What is the name of a valve that typically opens at 90 degrees?

Answer 14

Butterfly valve

Question 15

What is the downside to a centrifugal pump?

Answer 15

Not good for high lift operations

Question 16

Hydraulic leakage back to the gear case in normal operations is what

Answer 16

An internal leak

Question 17

What component connects two separate hydraulic circuits?

Answer 17

Manifold

Question 18

Globe valves have what three functions

Answer 18

Strait flow, angle flow, and cross flow

Question 19

A hydraulic relief valve having a plugged or face or clogged strainer will cause what

Answer 19

The relief valve to open at lower pressure

Question 20

What hydraulic pump best pumps contaminates

Answer 20

Gear pump

Question 21

Cavitation is caused by what

Answer 21

Inlet side restriction

Question 22

Hydraulic sludge in reservoir restricts what

Answer 22

Strainer

Question 23

Downfall to a centrifugal pump

Answer 23

Lack of suction lift

Question 24

What is the primary and secondary function on the p-100

Answer 24

Primary: fire fighting
Secondary: dewatering

Question 25

P6 spark plug gap should be

Answer 25

.028-.031
NGK bpr6es
Change every 300hrs or yearly

Question 26

P-100 oil and amount

Answer 26

10w-30
.44 gals or 1.65L