Ashcroft D700 - Differential Pressure Switches - Manual

Installation and Maintenance Instructions for
D400 & D700 ASHCROFT ® Snap Action
Switches for Differential Pressure Control
3.32
(84)
4.03
(102)
0.22
(6)
3.26
(83)
Ø 0.28 X 3 HOLES
(7)
1/4 NPT FEMALE
HIGH PRESSURE PORT
1/4 NPT FEMALE
LOW PRESSURE PORT
H L
2.27
(58)
1.25
(32)
2.77
(70)
2.99
(76)
0.25
(6)
1.55
(39)
Ø 2.31
(59)
7.16
(182)
3/4 NPT
D400
D700
5.20
(132)
3.62
(92)
2.18
(55)
0.32
(8)
4.37
(111)
1.37
(35)
Ø 0.28 x 3 HOLES
(7)
3.09
(78)
Ø 2.31
(59)
1.93
(49)
1/4 NPT FEMALE
LOW PRESSURE PORT
1/4 NPT FEMALE
HIGH PRESSURE PORT
H L
Ø 3.90
(99)
0.03
(1)
3.58
(91)
0.31
(8)
7.78
(198)
1.55
(39)
3/4 NPT
2 HOLES
3.6 lb
(1.6 kg)
4.5 lb
(2.0 kg)
STANDARD RANGES
15, 30, 60, 100, 200, 400, 600 psid
INTRODUCTION
The Ashcroft ® differential pressure switch is a precision built U.L.
and C.S.A. approved control device which features a mechanical
snap action switch. Controllers are available for operation on
various pressure differentials with fixed or variable switching dif-
ferentials. Also, manual reset types are available for operation on
increasing or decreasing pressure. The manual reset types
remain tripped until reset by pressing a button on the top of the
enclosure. The standard electrical switch is SPDT and is avail-
able with various electrical characteristics. Two SPDT switch ele-
ments mounted together are available except on variable dead-
band and manual reset types. Various wetted material construc-
tions for compatibility with a wide range of pressure media may
be obtained.
The Ashcroft snap action temperature switch is furnished in the
standard NEMA 4 and explosion proof NEMA 7 and 9 enclosure
styles. Both enclosures are epoxy coated aluminum castings.
© 2012 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&M009-10007- (250-2248E) 10/12