Fluid Power Week 5

Question 1

What is a check valve?

Answer 1

Valve which allows flow in only 1 direction. Held by a spring (typically requires 5PSI to open)

Question 2

What is a cylinder used for?

Answer 2

Linear Mechanical Energy/Straight Line Mechanical Energy

Question 3

What is the primary purpose for all cylinder seals?

Answer 3

Allow the piston to pressurize.

Question 4

What is the Primary seal used for?

Answer 4

Keeps the fluid from rushing out of the cylinder around the rod.

Question 5

What is the wiper seal for?

Answer 5

Clean and lubricate the rod.

Question 6

What is the end of the cylinder opposite of the rod?

Answer 6

Blind end.

Question 7

What is the end called on the side of the rod?

Answer 7

Rod end.

Question 8

What is the load called when the rod extends?

Answer 8

Thrust Load.

Question 9

What damage can occur when the cylinder rod extends?

Answer 9

Rod buckle.

Question 10

What damage can occur when the cylinder rod retracts?

Answer 10

Rod tension.

Question 11

What are the 4 methods of cylinder mounting?

Answer 11

Cap Fixed Clevis
Head Trunnion
Cap Square Flange
Side Lugs

Question 12

Which cylinder has 1 threaded rod and moves in 1 direction?

Answer 12

Single Acting

Question 13

Which cylinder uses alternating pressure to move the piston both directions?

Answer 13

Double Acting

Question 14

Which cylinder has 2 separate rods which move both directions.

Answer 14

Double acting double rod

Question 15

What is a cushion valve?

Answer 15

Valve which slows the piston at the end of the stroke to eliminate shock.

Question 16

What are fluid Power motors for?

Answer 16

Rotary Mechanical Energy.

Question 17

What are the 2 basic hydrostatic motors?

Answer 17

Piston and Vane

Question 18

On a motor, what does a empty energy triangle denote?

Answer 18

Pneumatic (Air)

Question 19

On a motor, what does 1 energy triangle denote?

Answer 19

1 directional motor

Question 20

On a motor, what do 2 energy triangle denote?

Answer 20

Bidirectional motor (2 directions)

Question 21

What is an orifice?

Answer 21

Restriction on flow path.

Question 22

What 3 things effect flow through and orifice?

Answer 22

Size of orifice, pressure drop, and viscosity.

Question 23

What are the 2 types of orifices?

Answer 23

Fixed and Adjustable (Such as needle valves)

Question 24

What is a quick exhaust valve?

Answer 24

Control valves which increases exhaust flow as well as rod speed.

Question 25

What is the pain characteristic of mufflers?

Answer 25

No restriction to flow, unless they are dirty.