5
DQC414
877.963.4966 •
dixonvalve.com
G
e
n
e
r
a
l
P
r
o
d
u
c
t
I
n
f
o
r
m
a
t
i
o
n
Glossary of Quick Coupling Terms
Absolute Pressure:
A
m
e
a
s
u
r
e
o
f
p
r
e
s
s
u
r
e
h
a
v
i
n
g
i
t
’
s
z
e
r
o
p
o
i
n
t
a
t
a
t
m
o
s
p
h
e
r
i
c
p
r
e
s
s
u
r
e
.
F
o
r
e
x
a
m
p
l
e
,
t
h
e
s
u
m
o
f
a
t
m
o
s
p
h
e
r
i
c
a
n
d
g
a
u
g
e
p
r
e
s
s
u
r
e
w
o
u
l
d
b
e
a
b
s
o
l
u
t
e
p
r
e
s
s
u
r
e
(
P
S
I
A
)
.
F
o
r
v
a
c
u
u
m
,
i
t
i
s
e
x
p
r
e
s
s
e
d
i
n
i
n
c
h
e
s
o
f
m
e
r
c
u
r
y
.
Accidental Disconnection:
Di
s
c
o
n
n
e
c
t
i
o
n
o
f
a
c
o
u
p
l
i
n
g
w
h
i
l
e
i
n
o
p
e
r
a
t
i
o
n
d
u
e
t
o
f
a
i
l
u
r
e
o
f
t
h
e
c
o
u
p
l
i
n
g
m
e
c
h
a
n
i
s
m
(
a
.
k
.
a
.
u
n
i
n
t
e
n
t
i
o
n
a
l
d
i
s
c
o
n
n
e
c
t
i
o
n
)
.
Accumulator:
A container in which fluid is stored under pressure as a source of
reserve fluid power.
Aeration:
Air in a fluid
Air Inclusion:
T
h
e
a
i
r
f
o
r
c
e
d
i
n
t
o
t
h
e
s
y
s
t
e
m
d
u
r
i
n
g
t
h
e
c
o
n
n
e
c
t
i
o
n
o
f
a
q
u
i
c
k
d
i
s
c
o
n
n
e
c
t
c
o
u
p
l
i
n
g
.
Atmospheric Pressure:
Pressure exerted by the atmosphere at any specific
l
o
c
a
t
i
o
n
.
S
e
a
l
e
v
e
l
p
r
e
s
s
u
r
e
i
s
a
p
p
r
o
x
i
m
a
t
e
l
y
14.
7
P
S
I
.
Backpressure:
R
e
f
e
r
s
t
o
p
r
e
s
s
u
r
e
e
x
i
s
t
i
n
g
o
n
t
h
e
d
i
s
c
h
a
r
g
e
s
i
d
e
o
f
a
s
y
s
t
e
m
.
Bar:
A
n
i
n
t
e
r
n
a
t
i
o
n
a
l
s
t
a
n
d
a
r
d
u
n
i
t
o
f
p
r
e
s
s
u
r
e
e
q
u
a
l
t
o
10
0
,
0
0
0
P
a
s
c
a
l
s
,
a
p
p
r
o
x
i
m
a
t
e
l
y
14.
5
P
S
I
.
Blind-Mate:
A
c
o
u
p
l
i
n
g
t
h
a
t
c
a
n
b
e
a
u
t
o
m
a
t
i
c
a
l
l
y
c
o
n
n
e
c
t
e
d
w
i
t
h
o
u
t
h
u
m
a
n
i
n
t
e
r
v
e
n
t
i
o
n
a
n
d
w
i
t
h
o
u
t
v
i
s
i
b
i
l
i
t
y
.
Break-Away:
A
u
t
o
m
a
t
i
c
d
i
s
c
o
n
n
e
c
t
i
o
n
o
f
a
c
o
u
p
l
i
n
g
w
h
e
n
a
n
a
x
i
a
l
s
e
p
a
r
a
t
i
o
n
f
o
r
c
e
i
s
a
p
p
l
i
e
d
.
Brinelling:
Di
m
p
l
e
s
o
r
g
r
o
o
v
e
s
w
o
r
n
i
n
t
o
t
h
e
s
h
o
u
l
d
e
r
o
f
a
m
a
l
e
h
a
l
f
b
y
l
o
c
k
i
n
g
b
a
l
l
s
i
n
t
h
e
f
e
m
a
l
e
h
a
l
f
.
T
h
i
s
i
s
t
e
r
m
i
n
o
l
o
g
y
s
t
e
m
m
i
n
g
f
r
o
m
a
t
e
s
t
t
h
a
t
i
s
d
o
n
e
t
o
e
v
a
l
u
a
t
e
t
h
e
h
a
r
d
n
e
s
s
o
f
m
e
t
a
l
s
.
S
w
e
d
i
s
h
m
e
t
a
l
l
u
r
g
i
s
t
,
J
o
h
a
n
A
u
g
u
s
t
B
r
i
n
e
l
l
(
18
49
-
19
2
5
)
,
d
e
v
e
l
o
p
e
d
a
h
a
r
d
n
e
s
s
t
e
s
t
t
h
a
t
m
e
a
s
u
r
e
s
t
h
e
r
e
l
a
t
i
v
e
h
a
r
d
n
e
s
s
o
f
m
e
t
a
l
s
a
n
d
a
l
l
o
y
s
b
y
f
o
r
c
i
n
g
a
10
m
m
h
a
r
d
s
t
e
e
l
b
a
l
l
i
n
t
o
a
t
e
s
t
p
i
e
c
e
w
i
t
h
a
3
0
0
0
k
g
l
o
a
d
f
o
r
3
0
s
e
c
o
n
d
s
.
A
f
t
e
r
c
o
m
p
l
e
t
i
o
n
o
f
t
h
e
t
e
s
t
,
t
h
e
s
u
r
f
a
c
e
a
r
e
a
o
f
t
h
e
r
e
s
u
l
t
i
n
g
i
n
d
e
n
t
a
t
i
o
n
w
a
s
m
e
a
s
u
r
e
d
.
Burst Pressure:
T
h
e
p
r
e
s
s
u
r
e
a
t
w
h
i
c
h
a
d
e
v
i
c
e
l
o
s
e
s
t
h
e
c
a
p
a
b
i
l
i
t
y
t
o
r
e
t
a
i
n
p
r
e
s
s
u
r
e
.
Case Hardening:
Hardening the entire surface of a low carbon steel to a specific
d
e
p
t
h
.
Cavitation:
A
l
o
c
a
l
i
z
e
d
g
a
s
e
o
u
s
c
o
n
d
i
t
i
o
n
w
i
t
h
i
n
a
l
i
q
u
i
d
s
t
r
e
a
m
w
h
i
c
h
o
c
c
u
r
s
w
h
e
r
e
t
h
e
p
r
e
s
s
u
r
e
i
s
r
e
d
u
c
e
d
t
o
t
h
e
v
a
p
o
r
p
r
e
s
s
u
r
e
.
Charge Pressure:
The pressure at which replenishing fluid is forced into the
h
y
d
r
a
u
l
i
c
s
y
s
t
e
m
(
a
b
o
v
e
a
t
m
o
s
p
h
e
r
i
c
p
r
e
s
s
u
r
e
)
.
Check Valve:
A valve which permits flow of media in one direction only.
Cold Flow:
Co
n
t
i
n
u
e
d
d
e
f
o
r
m
a
t
i
o
n
u
n
d
e
r
l
o
a
d
.
Connect Under Pressure:
T
h
e
a
b
i
l
i
t
y
t
o
c
o
n
n
e
c
t
c
o
u
p
l
i
n
g
h
a
l
v
e
s
w
i
t
h
i
n
t
e
r
n
a
l
l
i
n
e
p
r
e
s
s
u
r
e
a
p
p
l
i
e
d
t
o
e
i
t
h
e
r
b
o
t
h
s
i
d
e
s
o
r
o
n
e
s
i
d
e
.
Contamination:
A
n
y
m
a
t
e
r
i
a
l
f
o
r
e
i
g
n
t
o
a
m
e
d
i
a
t
h
a
t
h
a
s
a
h
a
r
m
f
u
l
e
f
f
e
c
t
o
n
i
t
s
p
e
r
f
o
r
m
a
n
c
e
i
n
a
s
y
s
t
e
m
.
Coupling, Female Half:
a
.
k
.
a
.
c
o
u
p
l
e
r
,
s
o
c
k
e
t
,
r
e
c
e
i
v
e
r
Coupling, Male Half:
a
.
k
.
a
.
n
i
p
p
l
e
,
p
l
u
g
,
a
d
a
p
t
e
r
Coupling, Quick Disconnect:
A
c
o
m
p
o
n
e
n
t
w
h
i
c
h
c
a
n
q
u
i
c
k
l
y
j
o
i
n
o
r
s
e
p
a
r
a
t
e
a
fluid line without the use of tools or special devices.
Differential Pressure:
(
DP
)
T
h
e
d
i
f
f
e
r
e
n
c
e
i
n
p
r
e
s
s
u
r
e
b
e
t
w
e
e
n
a
n
y
t
w
o
p
o
i
n
t
s
o
f
a
s
y
s
t
e
m
o
r
a
c
o
m
p
o
n
e
n
t
,
a
l
s
o
k
n
o
w
n
a
s
De
l
t
a
-
P
o
r
p
r
e
s
s
u
r
e
d
r
o
p
.
Drybreak Coupling:
A
c
o
u
p
l
i
n
g
t
h
a
t
a
l
l
o
w
s
c
o
n
n
e
c
t
i
o
n
a
n
d
d
i
s
c
o
n
n
e
c
t
i
o
n
without spillage or air inclusion (a.k.a. flush face, flat face, no-spill)
Double-Acting Sleeve:
P
e
r
m
i
t
s
p
u
s
h
-
t
o
-
c
o
n
n
e
c
t
a
n
d
p
u
l
l
-
t
o
-
c
o
n
n
e
c
t
c
o
n
v
e
n
i
e
n
c
e
w
h
e
n
f
e
m
a
l
e
h
a
l
f
i
s
m
o
u
n
t
e
d
o
n
t
h
e
s
l
e
e
v
e
.
Dust Cap:
Du
s
t
o
r
d
i
r
t
r
e
p
e
l
l
i
n
g
e
n
c
l
o
s
u
r
e
f
o
r
t
h
e
n
i
p
p
l
e
.
Dust Plug:
Du
s
t
o
r
d
i
r
t
r
e
p
e
l
l
i
n
g
e
n
c
l
o
s
u
r
e
f
o
r
t
h
e
c
o
u
p
l
e
r
.
Dynamic Pressure:
P
r
e
s
s
u
r
e
t
h
a
t
,
o
n
c
e
i
t
i
s
r
e
l
e
a
s
e
d
,
i
s
a
b
l
e
t
o
b
e
i
m
m
e
d
i
a
t
e
l
y
r
e
p
l
e
n
i
s
h
e
d
.
Flow Checking:
Occurs when a valve closes during flow conditions, such as
w
h
e
n
q
u
i
c
k
l
y
l
o
w
e
r
i
n
g
a
h
e
a
v
y
i
m
p
l
e
m
e
n
t
(
a
.
k
.
a
.
c
h
e
c
k
o
f
f
,
b
a
c
k
c
h
e
c
k
i
n
g
,
l
o
c
k
-
u
p
)
.
Flush Position (valve):
A
n
o
-
s
p
i
l
l
v
a
l
v
e
t
h
a
t
a
l
l
o
w
s
c
o
n
n
e
c
t
i
o
n
a
n
d
disconnection without spillage or air inclusion. (a.k.a. flush face, drybreak,
n
o
-
s
p
i
l
l
)
.
Force to Connect:
A
x
i
a
l
a
n
d
/
o
r
r
o
t
a
t
i
o
n
a
l
f
o
r
c
e
r
e
q
u
i
r
e
d
t
o
m
a
k
e
a
c
o
m
p
l
e
t
e
c
o
n
n
e
c
t
i
o
n
.
Force to Disconnect:
T
h
e
r
e
v
e
r
s
e
o
f
t
h
e
a
b
o
v
e
.
GPM:
Acronym for Gallons Per Minute, a measure of flow.
Leakage:
T
h
e
m
e
d
i
a
t
h
a
t
i
s
u
n
i
n
t
e
n
t
i
o
n
a
l
l
y
r
e
l
e
a
s
e
d
f
r
o
m
a
c
o
u
p
l
i
n
g
d
u
e
t
o
c
o
m
p
o
n
e
n
t
f
a
i
l
u
r
e
o
r
r
e
t
e
n
t
i
o
n
w
e
a
k
n
e
s
s
e
s
.
LPM:
Acronym for Liters Per Minute, a measure of flow.
Induction Hardening:
H
a
r
d
e
n
i
n
g
o
f
a
l
o
c
a
l
i
z
e
d
a
r
e
a
o
f
m
e
d
i
u
m
o
r
h
i
g
h
c
a
r
b
o
n
s
t
e
e
l
.
Operating Pressure:
T
h
e
p
r
e
s
s
u
r
e
a
t
w
h
i
c
h
a
s
y
s
t
e
m
i
s
o
p
e
r
a
t
e
d
(
a
.
k
.
a
.
w
o
r
k
i
n
g
p
r
e
s
s
u
r
e
)
.
Peak Pressure:
M
a
x
i
m
u
m
m
o
m
e
n
t
a
r
y
p
r
e
s
s
u
r
e
e
n
c
o
u
n
t
e
r
e
d
i
n
t
h
e
o
p
e
r
a
t
i
o
n
o
f
a
c
o
m
p
o
n
e
n
t
(
a
.
k
.
a
.
p
r
e
s
s
u
r
e
s
p
i
k
e
,
s
u
r
g
e
p
r
e
s
s
u
r
e
)
Pressure Cap:
A
c
a
p
w
h
i
c
h
i
n
c
o
r
p
o
r
a
t
e
s
a
s
e
a
l
c
a
p
a
b
l
e
o
f
w
i
t
h
s
t
a
n
d
i
n
g
t
h
e
r
a
t
e
d
p
r
e
s
s
u
r
e
s
o
n
t
h
e
m
a
l
e
h
a
l
f
.
Pressure Impulse Test:
Subjecting a component to a specified pressure at a
specific rate of increase or decrease for a specified time limit and cycle.
Proof Pressure:
T
h
e
n
o
n
d
e
s
t
r
u
c
t
i
v
e
t
e
s
t
p
r
e
s
s
u
r
e
i
n
e
x
c
e
s
s
o
f
t
h
e
m
a
x
i
m
u
m
r
a
t
e
d
o
p
e
r
a
t
i
n
g
p
r
e
s
s
u
r
e
,
g
e
n
e
r
a
l
l
y
1.
5
t
i
m
e
s
t
h
e
s
t
a
n
d
a
r
d
o
p
e
r
a
t
i
n
g
p
r
e
s
s
u
r
e
.
PSI:
A
c
r
o
n
y
m
f
o
r
P
o
u
n
d
s
P
e
r
S
q
u
a
r
e
I
n
c
h
,
a
m
e
a
s
u
r
e
o
f
p
r
e
s
s
u
r
e
.
Push to Connect:
L
o
c
k
i
n
g
a
r
r
a
n
g
e
m
e
n
t
w
h
i
c
h
p
e
r
m
i
t
s
o
n
e
h
a
n
d
e
d
c
o
n
n
e
c
t
i
o
n
b
y
p
u
s
h
i
n
g
t
h
e
n
i
p
p
l
e
i
n
t
o
t
h
e
c
o
u
p
l
e
r
(
a
.
k
.
a
.
a
u
t
o
m
a
t
i
c
s
l
e
e
v
e
,
a
u
t
o
m
a
t
i
c
c
o
l
l
a
r
,
a
u
t
o
m
a
t
i
c
c
o
n
n
e
c
t
i
o
n
)
.
Rotation:
T
h
e
a
c
t
o
f
s
p
i
n
n
i
n
g
t
h
e
c
o
u
p
l
e
r
a
n
d
n
i
p
p
l
e
i
n
o
p
p
o
s
i
t
e
d
i
r
e
c
t
i
o
n
s
i
n
a
c
o
n
t
i
n
u
o
u
s
m
a
n
n
e
r
b
e
y
o
n
d
3
6
0
°
.
Single Acting Sleeve:
M
a
k
i
n
g
c
o
n
n
e
c
t
i
o
n
r
e
q
u
i
r
e
s
m
a
n
u
a
l
l
y
p
u
l
l
i
n
g
f
e
m
a
l
e
s
l
e
e
v
e
b
a
c
k
,
i
n
s
e
r
t
i
n
g
t
h
e
m
a
l
e
t
i
p
(
a
.
k
.
a
.
s
e
m
i
-
a
u
t
o
s
l
e
e
v
e
,
m
a
n
u
a
l
s
l
e
e
v
e
)
Sleeve Lock:
A
c
o
u
p
l
i
n
g
a
r
r
a
n
g
e
m
e
n
t
t
h
a
t
p
r
o
v
i
d
e
s
a
n
a
d
d
i
t
i
o
n
a
l
l
o
c
k
w
h
i
c
h
m
u
s
t
b
e
a
c
t
u
a
t
e
d
b
e
f
o
r
e
l
o
c
k
i
n
g
s
l
e
e
v
e
c
a
n
b
e
r
e
t
r
a
c
t
e
d
(
a
.
k
.
a
.
p
i
n
-
l
o
c
k
,
l
o
c
k
i
n
g
s
l
e
e
v
e
)
.
Spillage:
The fluid released from the system due to disconnection of a quick
disconnect coupling. This is the fluid trapped between the mating seal and the
v
a
l
v
e
s
e
a
l
o
f
t
h
e
c
o
u
p
l
i
n
g
h
a
l
v
e
s
.
Static Pressure:
P
r
e
s
s
u
r
e
t
h
a
t
,
o
n
c
e
r
e
l
e
a
s
e
d
,
i
s
n
o
t
a
b
l
e
t
o
b
e
i
m
m
e
d
i
a
t
e
l
y
r
e
p
l
e
n
i
s
h
e
d
.
Surge Flow:
A rapid increase in fluid flow.
Swivel:
T
h
e
a
c
t
o
f
s
p
i
n
n
i
n
g
t
h
e
c
o
u
p
l
e
r
a
n
d
n
i
p
p
l
e
i
n
o
p
p
o
s
i
t
e
d
i
r
e
c
t
i
o
n
s
t
o
a
d
e
g
r
e
e
t
h
a
t
i
s
l
e
s
s
t
h
a
n
3
6
0
°
.
Thermal Build-Up:
P
r
e
s
s
u
r
e
c
a
u
s
e
d
b
y
e
x
p
a
n
s
i
o
n
o
f
a
m
e
d
i
a
d
u
e
t
o
h
e
a
t
f
r
o
m
a
n
e
x
t
e
r
n
a
l
s
o
u
r
c
e
s
u
c
h
a
s
s
u
n
l
i
g
h
t
(
a
.
k
.
a
.
t
h
e
r
m
a
l
e
x
p
a
n
s
i
o
n
)
.
Trapped Pressure:
Pressurized fluid trapped behind a closed coupling valve.
Turbulence:
I
s
t
h
e
c
o
n
d
i
t
i
o
n
w
h
e
r
e
t
h
e
m
e
d
i
a
d
o
e
s
n
o
t
m
o
v
e
s
m
o
o
t
h
l
y
p
a
r
a
l
l
e
l
to the flow direction. Turbulent flow is caused by abrupt changes in direction,
c
h
a
n
g
e
s
o
f
c
r
o
s
s
-
s
e
c
t
i
o
n
,
o
r
b
y
h
i
g
h
v
e
l
o
c
i
t
y
.
T
h
e
r
e
s
u
l
t
i
s
i
n
c
r
e
a
s
e
d
f
r
i
c
t
i
o
n
,
w
h
i
c
h
g
e
n
e
r
a
t
e
s
h
e
a
t
,
d
e
c
r
e
a
s
e
s
o
p
e
r
a
t
i
n
g
p
r
e
s
s
u
r
e
a
n
d
w
a
s
t
e
s
p
o
w
e
r
.
Twist Lock:
A
l
o
c
k
i
n
g
a
r
r
a
n
g
e
m
e
n
t
w
h
i
c
h
r
e
q
u
i
r
e
s
a
r
o
t
a
t
i
o
n
a
l
a
c
t
u
a
t
i
o
n
t
o
u
n
l
o
c
k
t
h
e
m
a
t
i
n
g
h
a
l
v
e
s
.
Vacuum:
P
a
r
t
i
a
l
l
y
o
r
c
o
m
p
l
e
t
e
l
y
e
x
h
a
u
s
t
e
d
o
f
a
i
r
,
g
a
s
o
r
o
t
h
e
r
m
e
d
i
a
t
o
c
r
e
a
t
e
a
n
e
g
a
t
i
v
e
p
r
e
s
s
u
r
e
.
T
h
e
o
r
e
t
i
c
a
l
l
y
,
a
p
e
r
f
e
c
t
v
a
c
u
u
m
w
o
u
l
d
b
e
m
e
a
s
u
r
e
d
a
s
3
0
i
n
c
h
e
s
o
f
m
e
r
c
u
r
y
,
b
u
t
t
h
a
t
i
s
u
n
a
t
t
a
i
n
a
b
l
e
.
T
h
e
t
r
u
e
p
e
r
f
e
c
t
v
a
c
u
u
m
i
s
2
9
.
7
i
n
c
h
e
s
o
f
m
e
r
c
u
r
y
.