Skip to main content
Press Enter
Starting at $3,203.03CAD
Configure
Dwyer

DP Double Bellows Differential Pressure Switch

Two opposing bellows combine maximum sensitivity and vibration resistance at a moderate cost

Starting at
$3,203.03CAD
Have questions? We're here to help!
Have questions? We're here to help!
Configure

 Two opposing bellows combine maximum sensitivity and vibration resistance at a 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 switch, 316 stainless steel or brass bellows, flanged steel housing. Rated pressures to 600 psig.

 
A wide variety of switches and circuit styles enables exactly the specific type of control function needed for any system. Mercury switches are a good choice for humid areas while snap switches are better able to resist vibration. Various operations possible include single adjustment - fixed deadband, double adjustment - adjustable deadband, manual reset (increasing or decreasing pressure) and two stage with each SPST or SPDT switch independently adjustable. Standard enclosure is NEMA-1 style. Optional weatherproof construction is for outdoor use and explosion-proof enclosure meets requirements for Class I, Groups C & D; Class II, Groups E, F & G.
 
• Bellows switch design provides sensitivity to pressure changes but resists vibration preventing out of range switching
• External access to set and rest controls makes for easy adjustments
• Visible set point indicators simplify changes
Agency Approvals:cULus.
Weight:General purpose: 5 lb (2.3 kg). Weatherproof: 7 lb (3 kg). Explosion-proof: 25 lb (11 kg).
Set Point Adjustment:Thumbscrew.
Mounting Orientation:Vertical.
Process Connection:General purpose and weatherproof: 1/8" NPT female. Explosion-proof: 1/4" NPT male.
Conduit Connection:General purpose: 1/2" hole for conduit hub. Weatherproof: 1/2" conduit hub. Explosion-proof: 3/4" NPT female.
Electrical Connection:Screw terminal.
Electrical Rating:See Ordering Page.
Switch Type:Mercury or snap switch, see Ordering Page.
Enclosure Rating:General purpose, weatherproof or explosion-proof.
Pressure Limit:Maximum pressure of the operating range.
Temperature Limits:-10 to 180°F (-23 to 82°C).
Wetted Materials:Brass on ranges 61, 62, 63 or 316SS on ranges 62E, 64E 65E.

 • Accurate switch triggers in high pressure applications

  • Thumbnail of document Data Sheet - DP Double Bellows Differential Pressure Switch
    Download

    Data Sheet - DP Double Bellows Differential Pressure Switch

    Download
  • Thumbnail of document Manual - DP Double Bellows Differential Pressure Switch
    Download

    Manual - DP Double Bellows Differential Pressure Switch

    Download

Request a Calibration Quote

We’re here to make calibration easy. Request a quote today and let our team give you the care, precision, and service you can trust.
Learn more

Browse By Brands

Uncover the brands that set the standard for quality and dependability in every industry we serve.
Learn more