D1X, D2X Series

  • Hermetically sealed
  • Explosion proof housing for hazardous location
  • Tamper proof setpoint adjustment
  • Ideal for pressure or vacuum
  • UL, CSA, ATEX approved
  • NEMA 4, 7,9 & IP66

Barksdale's D1X and D2X Explosion Proof Diaphragm Pressure Switches offer high accuracy and reliability, providing an ideal solution for your hazardous locations pressure control requirements. With vacuum and positive pressure ranges to 150 psi, NEMA 4,7,& 9 enclosures, a covered terminal strip and tamper-proof external adjustment, Barksdale D1X and D2X Explosion Proof Diaphragm Pressure Switches meet your needs in a wide variety of applications. These switches are available in single setting or dual control. An internal set screw allows for easy internal adjustment of setpoints. For applications requiring a highly accurate switch in a durable package, Barksdale's Explosion Proof Diaphragm Pressure Switches are the ideal choice.


General Specifications*

Accuracy: ± 0.5% of the adjustable range
Single pole double throw (SPDT) Snap Action; single circuit
10 amps @ 125/250 VAC; 3 amps @ 480 VAC (Class A or H limit switch). Consult sales drawing for ratings of optional limit switches.
Wetted Parts:
Process Fitting:
303 stainless steel
17-7 PH stainless steel
Die-cast aluminum, anodized and painted
Electrical Connection: Screw terminals on covered terminal strip via 1/2″ NPT (D1X) and 3/4″ NPT (D2X) conduit fittings.
Enclosure Ratings: NEMA 4, 7, 9
Pressure Connection: 1/4″ NPT Female
UL (standard):
CSA (standard):

ATEX (optional):

All models are UL approved for use in hazardous locations Class I, Groups B, C, & D; Class II, Groups E, F, & G. UL File No. E37043All models are CSA approved for use in hazardous locations Class I, Groups B, C & D; Class II, Groups E, F, & G. CSA File No. LR22354

EX models are ATEX marked as follows:
CE 0081, ISSeP 08 ATEX024X
II 2G D, Ex d IIC T6
Ex tD A21 IP65 T80°C
-40°C . Tamb . +75°C

Temperature Range:
-40° to +165°F (-40° to +74°C)
-65° to +200°F (-54° to 93°C)
Adjustment Instructions:
Turn adjustment screw counterclockwise to raise actuation point.
Turn adjustment screw clockwise to increase setpoint (higher vacuum).
Options: – Factory pre-set
Shipping Weight: 7.0 lbs. approximate
* See product confi gurator for additional options.

Wiring Code

Lead Circuit #1 Circuit #2
Pressure Vacuum Pressure Vacuum
Normally Closed Blue Red Orange Yellow
Common Purple Purple Brown Brown
Normally Open Red Blue Yellow Orange


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