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Dwyer Series DP Double Bellows Differential Pressure Switches

Visible Setpoints, Adjustable or Fixed Deadband, High Pressure Ranges

Two opposing bellows combine maximum sensitivity and vibration resistance with moderate cost in the Series DP differential pressure switches. Both set and reset points are easily adjustable through non-interactive, externally accessible controls. Visible setpoint indicators simplify changes. SPDT snap action or mercury switch, 316 stainless steel or brass bellows, flanged steel housing. Rated pressures to 600 psig.

See Dimensions

OPTIONAL ENCLOSURES
Weatherproof Housing - to order add “W” suffix after DPA. Example: D P A W - 7033-153-61
Explosion-Proof Housing - to order add “E” suffix after DPA. Example: D P A E - 7033-153-61
NOTE: Mercury switch units are not CE approved.
Popular Snap Action Switch SPDT, 15A @ 120/240 VAC
Model
Number
Bellows Material Range psid (bar) Max. Press psig (bar) Min. D.B. psid (bar)
 DPA-7033-153-61  Brass  0-10 (0-0.7)  50 (3.5)  1.5 (.10)
 DPA-7033-153-62  Brass  0-20 (0-1.4)  100 (6.9)  2.5 (.17)
 DPA-7033-153-64  Brass  0-30 (0-2.1)  300 (20.7)  6.0 (.41)
 DPA-7043-153-62E  316SS  0-20 (0-1.4)  100 (6.9)  3.0 (.21)
 DPA-7043-153-64E  316SS  0-30 (0-2.1)  300 (20.7)  6.0 (.41)
 DPA-7043-153-65E  316SS  0-80 (0-5.5)  600 (41.4)  20 (1.4)
 DPS-7233-153-61  Brass  0-10 (0-0.7)  50 (3.5)  0.5 (.03)
 DPS-7233-153-62  Brass  0-20 (0-1.4)  100 (6.9)  1.0 (.07)
 DPS-7233-153-64  Brass  0-30 (0-2.1)  300 (20.7)  1.5 (.10)
 DPS-7243-153-62E  316SS  0-20 (0-1.4)  100 (6.9)  1.5 (.10)
 DPS-7243-153-64E  316SS  0-30 (0-2.1)  300 (20.7)  2.0 (.14)
 DPS-7243-153-65E  316SS  0-80 (0-5.5)  600 (41.4)  6.0 (.41)
Popular Mercury Switch SPDT, 4A @ 120, 2A @ 240 AC/DC
Model
Number
Bellows Material Range psid (bar) Max. Press psig (bar) Min. D.B. psid (bar)
 DPA-33-153-61  Brass  0-10 (0-0.7)  50 (3.5)  1.0 (.07)
 DPA-33-153-62  Brass  0-20 (0-1.4)  100 (6.9)  1.5 (.10 )
 DPA-33-153-64  Brass  0-30 (0-2.1)  300 (20.7)  3.0 (.21)
 DPA-43-153-62E  316SS  0-20 (0-1.4)  100 (6.9)  2.0 (.14)
 DPA-43-153-64E  316SS  0-30 (0-2.1)  300 (20.7)  3.5 (.24)
 DPA-43-153-65E  316SS  0-80 (0-5.5)  600 (41.4)  16 (1.1)