Ashcroft DDS Series DP Switch User Manual
Page 2
© 2013 Ashcroft Inc., 250 East Main Street, Stratford, CT 06614-5145, USA, Tel: 203-378-8281, Fax: 203-385-0499, www.ashcroft.com
All sales subject to standard terms and conditions of sale.
I&M009-10207-03/13 Rev. 05/13
Installation and Maintenance Instructions for
DDS-Series High Static Operating Pressure
IWD Range Differential Pressure Switches
PRESSURE ADJUSTMENT NUT
TERMINALS
COMMON
NORMALLY OPEN
NORMALLY CLOSED
ONE
“1”
SPDT
TANDEM
“2”
DPDT
5
.5
2
5.52
7.00
4 MTG. FEET
9/32 HOLES
PRESSURE
ADJ. NUT
A
C
B
B
1/4 NPT PR.PORT LOW
1/4 NPT PR.PORT HIGH
3/4 NPT
CONDUIT
OUTLET
NEMA Rating
Static Pressure
A
B
C
D
4
250 psi
5.97
3.82
0.75
1.43
7
250 psi
6.19
3.82
0.75
1.43
4
1500 psi
6.57
4.41
1.13
1.53
7
1500 psi
6.78
4.41
1.13
1.53
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