Dimensions (inches) – psid ranges, Dimensions (inches) – ˝h, O differential ranges – Omega Vehicle Security PSW490B User Manual
Page 5: Dsw490b
DIFFERENTIAL PRESSURE SWITCH –
INCHES OF WATER
DIFFERENTIAL PRESSURE SWITCH – PSID
A
Ø 0.28
(3 Holes)
D
C
G
E
B
H
3/4 NPT
1/4 NPT
Female
1/4 NPT
Female
A
Ø 0.28
(3 Holes)
C
1/4 NPT
High
Pressure
Inlet
1/4 NPT
Low Pressure
Inlet
B
D
E
F
H
G
3/4 NPT
C
A
U
T
IO
N
TO
PR
EV
EN
T IGNITION OF
H
A
Z
A
R
D
O
U
S
AT
MO
SPH
ERE TURN
OF
F
P
O
W
E
R
B
E
FO
RE
OPENING. CLO
SE
T
IG
H
T
LY
BE
FO
RE OPERAT
IN
G
.
C
A
U
T
IO
N
C
O
UP
ER
LE
CO
UR
AN
TA
VA
N
T
D
’O
U
V
R
IR
.
B
IE
N
FE
RM
ER
AV
AN
T
DE
M
E
T
T
R
E
E
N
SE
RV
IC
E.
C
D
E
F
H
I
0.28 THRU
(3 PLACES)
1/4 NPT
FEMALE
3/4 NPT
(2 PLACES)
B
A
1/4 NPT
FEMALE
®
C
A
U
T
IO
N
TO
PR
EV
EN
T IGNITION OF
H
A
Z
A
R
D
O
U
S
AT
MO
SPH
ERE TURN
OF
F
P
O
W
E
R
B
E
FO
RE
OPENING. CLO
SE
T
IG
H
T
LY
BE
FO
RE OPERAT
IN
G
.
C
A
U
T
IO
N
C
O
UP
ER
LE
CO
UR
AN
TA
VA
N
T
D
’O
U
V
R
IR
.
B
IE
N
FE
RM
ER
AV
AN
T
DE
M
E
T
T
R
E
E
N
SE
RV
IC
E.
B
A
C
H
D
E
F
G
0.28 THRU
(3 PLACES)
3/4 NPT
(2 PLACES)
1/4 NPT
LOW PRESSURE
INLET
1/4 NPT HIGH
PRESSURE
INLET
®
DSW490B
DSW490B
PSW790B
PSW790B
DIMENSIONS (Inches) – PSID Ranges
STYLE
A
B
C
D
E
F
G
H
DSW490B
4.0
3.25
3.31
2.75
2.31
1.19
2.31
2.27
DSW790B
7.78
5.20
4.38
3.88
3.58
1.22
2.31
.312
DIMENSIONS (Inches) – ˝H
2
O Differential Ranges
STYLE
A
B
C
D
E
F
G
H
I
DSW490B
5.69
4.0
3.25
3.31
5.13
–
1.43
2.75
–
DSW790B
6.38
5.20
4.38
3.88
3.96
1.22
–
.312
5.13