Dwyer Instruments DA-31-2-9 Pressure Switch
For heavy-duty pressure monitoring in industrial HVAC and pumping systems, the Dwyer Instruments DA-31-2-9 provides the reliability of a Bourdon tube pressure switch with a SPST mercury switch configuration. This unit is designed to open on increase, making it a staple for high-limit safety cut-outs and pressure control applications. With an adjustable operating range of 10 to 300 psig and a 12 psig minimum deadband, it offers the high repeatability and sensitivity required for precise setpoint management without the need to open the general purpose enclosure.
The DA-31-2-9 pressure switch features a visible calibrated dial and external thumbscrew adjustments, allowing contractors to verify and adjust high and low setpoints rapidly. The brass Bourdon tube ensures compatibility with non-corrosive liquids and gases, while the 1/4" NPT process connection ensures a standard fit for most manifolds. Its vertical mounting orientation and screw terminal electrical connections provide a straightforward installation process for veteran technicians looking for durable, non-interactive adjustment controls.
Key Benefits:- Visible Setpoints: The calibrated dial allows for a fast visual check of current settings and switch status without exposing internal components.
- Fully Adjustable Deadband: Unlike fixed-differential models, the DA series allows you to set high and low operating points independently across the full scale.
- Durable Construction: Features a robust brass Bourdon tube and a mercury-tilt switch for long-cycle reliability in mechanical rooms.
- Ease of Integration: Standard 1/2" conduit-hole and 1/4" NPT male process connection simplify retrofit and new-build installations.
- How do I adjust the setpoints on this model? Use the two external thumbscrews; one sets the high-pressure trip point, while the other adjusts the reset point to determine the deadband spread.
- Can this switch be used in high-vibration environments? For applications with excessive vibration or pressure surges, we recommend using a remote connection or a surge tank to protect the Bourdon tube.
- Does this unit require a specific mounting position? Yes, the DA-31-2-9 must be installed in a vertical and level position to ensure the mercury switch operates accurately.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $1,077.72
-65%$1,077.72
$377.20Dwyer Instruments DA-31-2-9 Pressure Switch
For heavy-duty pressure monitoring in industrial HVAC and pumping systems, the Dwyer Instruments DA-31-2-9 provides the reliability of a Bourdon tube pressure switch with a SPST mercury switch configuration. This unit is designed to open on increase, making it a staple for high-limit safety cut-outs and pressure control applications. With an adjustable operating range of 10 to 300 psig and a 12 psig minimum deadband, it offers the high repeatability and sensitivity required for precise setpoint management without the need to open the general purpose enclosure.
The DA-31-2-9 pressure switch features a visible calibrated dial and external thumbscrew adjustments, allowing contractors to verify and adjust high and low setpoints rapidly. The brass Bourdon tube ensures compatibility with non-corrosive liquids and gases, while the 1/4" NPT process connection ensures a standard fit for most manifolds. Its vertical mounting orientation and screw terminal electrical connections provide a straightforward installation process for veteran technicians looking for durable, non-interactive adjustment controls.
Key Benefits:- Visible Setpoints: The calibrated dial allows for a fast visual check of current settings and switch status without exposing internal components.
- Fully Adjustable Deadband: Unlike fixed-differential models, the DA series allows you to set high and low operating points independently across the full scale.
- Durable Construction: Features a robust brass Bourdon tube and a mercury-tilt switch for long-cycle reliability in mechanical rooms.
- Ease of Integration: Standard 1/2" conduit-hole and 1/4" NPT male process connection simplify retrofit and new-build installations.
- How do I adjust the setpoints on this model? Use the two external thumbscrews; one sets the high-pressure trip point, while the other adjusts the reset point to determine the deadband spread.
- Can this switch be used in high-vibration environments? For applications with excessive vibration or pressure surges, we recommend using a remote connection or a surge tank to protect the Bourdon tube.
- Does this unit require a specific mounting position? Yes, the DA-31-2-9 must be installed in a vertical and level position to ensure the mercury switch operates accurately.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
For heavy-duty pressure monitoring in industrial HVAC and pumping systems, the Dwyer Instruments DA-31-2-9 provides the reliability of a Bourdon tube pressure switch with a SPST mercury switch configuration. This unit is designed to open on increase, making it a staple for high-limit safety cut-outs and pressure control applications. With an adjustable operating range of 10 to 300 psig and a 12 psig minimum deadband, it offers the high repeatability and sensitivity required for precise setpoint management without the need to open the general purpose enclosure.
The DA-31-2-9 pressure switch features a visible calibrated dial and external thumbscrew adjustments, allowing contractors to verify and adjust high and low setpoints rapidly. The brass Bourdon tube ensures compatibility with non-corrosive liquids and gases, while the 1/4" NPT process connection ensures a standard fit for most manifolds. Its vertical mounting orientation and screw terminal electrical connections provide a straightforward installation process for veteran technicians looking for durable, non-interactive adjustment controls.
Key Benefits:- Visible Setpoints: The calibrated dial allows for a fast visual check of current settings and switch status without exposing internal components.
- Fully Adjustable Deadband: Unlike fixed-differential models, the DA series allows you to set high and low operating points independently across the full scale.
- Durable Construction: Features a robust brass Bourdon tube and a mercury-tilt switch for long-cycle reliability in mechanical rooms.
- Ease of Integration: Standard 1/2" conduit-hole and 1/4" NPT male process connection simplify retrofit and new-build installations.
- How do I adjust the setpoints on this model? Use the two external thumbscrews; one sets the high-pressure trip point, while the other adjusts the reset point to determine the deadband spread.
- Can this switch be used in high-vibration environments? For applications with excessive vibration or pressure surges, we recommend using a remote connection or a surge tank to protect the Bourdon tube.
- Does this unit require a specific mounting position? Yes, the DA-31-2-9 must be installed in a vertical and level position to ensure the mercury switch operates accurately.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
