Eaton Ch 4 Flashcards
Pipe sizes are specified by______ size and wall thickness
Index
Negative
Nominal
Positive
Nominal 
The schedule number for standard pipe is
100
50
40
30
40
One advantage of tubing over pipe is the ease of_____ to shape
Elastomer
Bending
Degreasing
Cutting
Bending 
The specified size for tubing refers to the______
ID
OD
Sub plate
Fittings
OD
Sealing between sections of tubing is obtained by the use of various types of ______
Valves
Elastomer
Fittings
Fluids
Fittings
The four primary purposes of hydraulic fluid are_____
Transmission of power
Cooling
Lubricates and seal
All of the above
All of the above
Lip type seals are use principally on______ shafts
Permanent
Rotating
Pressure
Rigid
Rotating
And elastic or rubber like material that contains no natural rubber is called an______
Additive
Elastomer
Emulsifier
Illuminator
Elastomer
Nitrile (buna-N) has a reasonably wide temperature range, which is____ degrees Fahrenheit
100° to 500°F
60° to 500°F
40° to 250°F
100°, 250°F
40°, 250°F
One of the several ways to reduce leakage is with the use of_______ mounted valves
Surface
Back
Sub plate
Front
Back
Back mounting refers to panel type installations were pipe or tubing is______ connected to sub plates
Temporarily
Permanently
Alternately
Sometimes
Permanently
What type of seal is installed and an annular groove
Dynamic
T ting
O ring
Cup
O ring
After installation, a seal began to wear quickly and leak, which meant it was probably not_____ before installation
Measured
Lubricated
Cleaned
Back mounted
Lubricated
At too high a temperature a seal may harden, swell or _____
Blow
Vibrate
Sandwich
Soften
Soften
What type of inexpensive sealing material is widely used in modern hydraulic systems?
Nitrile
Silicone
Teflon
Viton
Nitrile
