Specification
Number Pressure Switch Mk.
Contact Position
Low
Pressure
Hi-Vac.
Intermediate
Pressure
High
Pressure
Lo-Vac.
-4122
-4129
-4132
-4123
“A”
“B”
“A”
“B”
“A”
“B”
“A”
“B”
ON
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
ON
ON
OFF
Two-Stage Pressure Controls, Series D-400 Ranges and Differentials
Two Stage, Series D-400 Switch Operating Specifications
When ordering, select operation desired, add suffix number to type number of
control. Example: Type DA-431-4122.
Specification No. 4122.
One circuit opens on increase of pressure; second circuit
opens on further increase of pressure.
Specification No. 4129.
One circuit closes on increase of pressure; second circuit
closes on further increase of pressure.
Specification No. 4132.
Both circuits open at intermediate pressure. One circuit
closes on increase of pressure above neutral zone; second circuit closes on
decrease in pressure below neutral zone.
Specification No. 4123.
Both circuits close at intermediate pressure. One circuit
opens on increase of pressure above neutral zone; second circuit opens on decrease
in pressure below neutral zone.
Electrical Ratings D-400
See Code C on Page 5 in Electrical Rating Chart.
Range
Number Adj. Working Range
Bourdon
Tube Material
Minimum Pressure Spread
Between Switch Operation
Fixed Differential Each
Switch (Sensitivity)
For Steam and Other Applications: DA-431, -DAW-433, DAH-431
1
2
3
3A
4
5
6
7
8
9
27
1/8 to 15 psig
0 to 30 in Hg VAC
10 in VAC 12 psig
1/8 to 20 psig
1 to 35 psig
2 to 60 psig
5 to 100 psig
5 to 150 psig
5 to 200 psig
10 to 300 psig
25 in VAC 50 psig
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
2-1/2 psig
4 in Hg
2-1/2 psig
2-1/2 psig
3-1/2 psig
5 psig
7 psig
10-5/8 psig
15 psig
25 psig
7 psig
1/2 psig
1 in Hg VAC
1/2 psig
1/2 psig
3/4 psig
3/4 psig
1 psig
1-1/8 psig
1-1/4 psig
2 psig
1 psig
For General Pressure Applications: DA-421, DAW-423, DAH-421
5S
6S
8S
9S
9AS
10S
11S
12S
13S
15S
25S
26S
2 to 60 psig
5 to 100 psig
10 to 200 psig
10 to 300 psig
40 to 350 psig
25 to 600 psig
50 to 1000 psig
100 to 1500 psig
300 to 2500 psig
500 to 5000 psig
30 in Hg VAC 60 psig
30 in Hg VAC 75 psig
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Steel
6 psig
8 psig
10 psig
20 psig
20 psig
40 psig
100 psig
150 psig
250 psig
600 psig
5 psig
10 psig
1-1/4 psig
2 psig
2 psig
4 psig
4 psig
7 psig
10 psig
12 psig
20 psig
150 psig
1 psig
2 psig
316 SS Bourdon Tubes: DA-441, DAW-443, DAH-441
26E
23E
6E
24E
9E
21E
22E
11E
13E
30 in Hg VAC 75
5 to 75 psig
10 to 100 psig
10 to 150 psig
10 to 300 psig
30 to 400 psig
75 to 800 psig
100 to 1000 psig
200 to 2500 psig
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
12 psig
12 psig
12 psig
13 psig
35 psig
40 psig
85 psig
125 psig
275 psig
2 psig
2 psig
2 psig
3 psig
6 psig
8 psig
15 psig
22 psig
75 psig
