3-9.
A universal fitting is one that
can be
1.
positioned to the angle
required for the installation
2.
adapted to operate with any
size tubing
3.
positioned to any angle in
any plane
4.
routed through a bulkhead
IN QUESTIONS 3-10 THROUGH 3-13, SELECT
FROM COLUMN B THE CONNECTOR TO WHICH
EACH STATEMENT CONCERNING TIGHTENING
DATA IN COLUMN A APPLIES.
A. TIGHTENING DATA
3-10.
This connector
tightened 1/6
turn past the
specified torque
3-11.
This connector
may not be
tightened past
the specified
torque
3-12.
This connector
must be preset
prior to being
tightened
3-13.
This connector
must be turned
with a wrench
1/6 turn past
handtight
3-14.
3-15.
B. CONNECTORS
1.
Flareless
type
2.
Aluminum
alloy
flared type
3.
Steel
flared type
Quick-disconnect couplings are
provided with an automatic
shutoff feature which prevents
loss of fluid from the system or
entrance of foreign matter into
the system when they are
disconnected.
1.
True
2.
False
Manifolds are used in the
pressure supply and/or return
lines of fluid power systems to
perform which of the following
functions?
1.
Conserve space
2.
Reduce joints
3.
Eliminate piping
4.
All of the above
3-16.
In long pieces of tubing or
pieces bent to a complex shape,
rust and scale can be removed by
what process?
1.
Degaussing
2.
Pickling
3.
Scraping
4.
Sandblasting
Learning Objective:
Identify
functions of valves in a fluid
power system; also recognize
functions, operating
characteristics,
and construction
features of various types of flow
control valves.
3-17.
Valves are used to control which
of the following in fluid power
systems?
1.
Direction of fluid flow
2.
Fluid pressure
3.
Fluid flow
4.
All of the above
IN ANSWERING QUESTIONS 3-18 THROUGH
3-20, SELECT FROM COLUMN B THE TYPE OF
FLOW CONTROL VALVE MOST CLOSELY
IDENTIFIED WITH EACH STATEMENT IN COLUMN
A.
3-18.
3-19.
3-20.
A.
STATEMENTS
Its flow is con-
trolled by
raising or low-
ering discs or
wedges
Flow or no-flow
through it is
controlled by
turning the valve
shaft one-quarter
turn
Certain types are
used as variable
restrictors
B.
TYPES
1.
Ball
2.
Gate
3.
Globe
4.
Needle
3-21.
Gate valves are suitable for use
as throttling valves because they
close in small increments.
1.
True
2.
False
17
