Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Pipefitting Term 1 > Pipe Fittings, Valves etc. > Flashcards

Pipe Fittings, Valves etc. Flashcards

1
Q

T OR F - An orifice flange is used for measuring flow in a piping system

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

T OR F - Caps are used to close female openings

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

T OR F - A union is essentially a pipe coupling

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

T OR F - Brass is an alloy of copper and zinc

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

T OR F - Used threaded lubricants or pipe dope on male threads only

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Flared joints are well adapted to high pressure service

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Many factors must be considered in selecting the correct Victaulic gasket for a specific service

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

One type of gate valve is the rising stem, outside screw and yoke

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Some valves have a 4 part body

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Springs are sometimes used in check valves to seat the disk quickly

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

A ball lift check should only be installed in a horizontal line

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

A swing check valve ensures a positive shut off

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A pressure relief valve is used to relieve a build up of excessive pressure in a piping system

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The thermal sensing rod of a T & P valve is usually installed on a bottom of a water heater

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Flow control valves are installed in hydronic systems to create gravity circulation

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The most commonly used bonnet for larger sized valves is the bolted bonnet

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

When a valve has a rating of 125 lb S, 200 lb W.O.G. It can be used on a 200 lb steam system

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Temperature and pressure are the only considerations which must be considered when installing valves

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Pipe guide allow the pipe to move in an axial direction only

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The sizes of pipe are identified by the measurement called the

A

Nominal pipe size (NPS)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Steel pipe is supplied with the following end finishes:

A

PESC (Plain End Square Cut)
T&C (Threaded and coupled
TBE (Threaded Both Ends)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Flanges are made in sizes as small as

A

1/2”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

A ___ coating can be applied to protect steel pipe by sealing the base metal from corrosive moisture

A

Zinc

24
Q

What is another name for an elbow fitting

A

90

25
Q

A __ bolt is threaded on both ends

A

stud

26
Q

The name of all segments of dies used for cutting threads is called?

A

chasers

27
Q

A ____ bend makes a 180 degree turn in a pipeline

A

return

28
Q

A __ wound gasket may include a centering ring, an inner ring or both

A

spiral

29
Q

A ___ is used to connect two pieces of pipe of different sizes in a straight line

A

coupling

30
Q

The best practice is to replace __ in full sets

A

chasers

31
Q

What are the three types of welded joints

A

Flange, socket, butt

32
Q

Pipe used in ___ welding does not require beveling

A

socket

33
Q

Only schedule ___ PVC pipe may be threaded

A

80

34
Q

A ___ wrench should be used to tighten PVC and CPVC pipe flange joints

A

torque

35
Q

The four principal functions of valves are to ___, ___, ___, ___, flow.

A

start, stop, direct, regulate/throttle

36
Q

What three factors affect a valve’s performance?

A

pressure, flow, operating conditions

37
Q

Valve pressure classification is always given in?

A

psig

38
Q

Regulating or throttling flow is done with?

A

globe and angle valves

39
Q

The two basic types of check valves are?

A

swing and lift

40
Q

Valves should be installed so that:

A
  1. they can be fully opened
  2. the stuffing box can be repacked
  3. the stem and bonnet can be removed for inspection
41
Q

A factor to consider in the selection of a pipe hanger and support system is

A
  1. the movement of fluid
  2. the temperature of the fluid
  3. vibration
42
Q

The most common hanger used in piping systems is the

A

clevis

43
Q

A ___ clamp is used to support vertical pipe at locations where the pipe passes through

A

riser or friction

44
Q

Pressure ___ are used to reduce incoming pressures

A

regulators

45
Q

Boilers subject to damage from excessive pressures should be equipped with

A

safety

46
Q

Gate valves should only be used with ___ valves, either fully open or closed

A

stop

47
Q

A rotary or ___ turn valve moves from closed to fully open by rotating its stem 90 degrees

A

one quarter

48
Q

___ valves can be used for throttling and in some cases shutoff valves

A

butterfly

49
Q

What are the two basic styles of butterfly valves

A

wafer and lug

50
Q

A ___ bolted gland is a type of

A

stuffing box

51
Q

The best way to install a valved in a horizontal line is with the stem

A

up

52
Q

___ valves are used where a frequent change in direction of flow in more than one pipeline is required.

A

Multiport

53
Q

A ___ gauge is generally used to check the position of gaskets in the joints of a concrete pressure pipeline.

A

feeler

54
Q

Flanged joints are made up by bolting two ____ together with a gasket between their ____ faces.

A

flanges, machined

55
Q

A __ valve is used when there is a need for absolute tightness around the valve stem.

A

diaphragm

56
Q

Swing check valves give __ resistance to flow

A

minimal

57
Q

Check valves are used to __________ or __________ reversal of flow in piping.

A

check, prevent

Pipefitting Term 1 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions