Dwyer's email issues have been resolved. If you sent an email between 4 AM - 3 PM CT on 12/2/22 please confirm that we received it.

Pressure Switches

Pressure Switches
Dwyer pressure switches are explosion-proof, ATEX approved, weatherproof, compact and low cost. Applications include HVAC applications, process applications, all weather applications, and gas furnaces.
Set Descending Direction
View as Grid List

10 Items

per page
  1. Series H3 Explosion-Proof Differential Pressure Switches
    Rating:
    0%
    Explosion-Proof Differential Pressure Switches ...
  2. Series 1950 Explosion-proof Differential Pressure Switch
    Rating:
    0%
    Explosion-proof Differential Pressure Switch applies to HVAC, proces ...
    Starting at $311.00
  3. Series DA/DS Bourdon Tube Pressure Switches
    Rating:
    0%
    Bourdon Tube Pressure Switches have extremely high sensitivity and g ...
    Starting at $662.00
  4. Series 1950G Explosion-proof Differential Pressure Switch
    Rating:
    0%
    Explosion-proof Differential Pressure Switch combines the best featu ...
    Starting at $471.00
  5. Series PG Gas Pressure/Differential Pressure Switch
    Rating:
    0%
    Gas Pressure/Differential Pressure Switch is used with air and other ...
    Starting at $790.00
  6. Series 1996 Gas Pressure Switch
    Rating:
    0%
    Gas Pressure Switch used with natural, manufactured, or LP gas. Appl ...
    Starting at $154.00
  7. Series H2 Dual-Action Explosion-proof Pressure Switches
    Rating:
    0%
    Dual-Action Explosion-Proof Pressure Switches have a design that is ...
    Starting at $1,800.00
  8. Series AT-ADPS ATEX/IECEx Approved Differential Pressure Switch
    Rating:
    0%
    ATEX/IECEx Approved Differential Pressure Switch designed for pressure ...
  9. Series AT-3000MR/MRS ATEX/IECEx Approved Photohelic® Switch/Gage
    Rating:
    0%
    ATEX/IECEx Approved Photohelic® Switch/Gage combines the functions ...
  10. Series AT-1800 ATEX/IECEx Approved Low Differential Pressure Switch
    Rating:
    0%
    Series AT-1800 ATEX/IECEx Approved Low Differential Pressure Switch ...
Set Descending Direction
View as Grid List

10 Items

per page

Questions

Question
For which pressure switch applications are gold contacts recommended?
Answer
For "dry circuit" applications where little or no current is flowing in the circuit to help burn off contact dirt and oxidation. Switches used with solid state circuits often fall in this category.
Question
Does Dwyer offer a fully UL/FM/CSA approved explosion proof pressure switch?
Answer
Yes. The 1950 and 1950G Series.
Question
Can the standard H2 pressure switch be used with water?
Answer
No. The brass or SS housing must be specified for compatibility reasons. The aluminum housing can leak into the switch.
Question
I am going to order the d/p switch 1950-5-2-S-AT. Option "-AT" is an aluminum tag. I would like to know the size of the tag.
Answer
Aluminum tags may contain 2 lines, approximately 9 characters per line.
Question
What is the power consumption of a 24 VDC 1950G Pressure Switch?
Answer
The Current Draw for the 1950G 120mA @ 24VDC 30mA @ 120 VAC 15mA @ 240 VAC