Dwyer Instruments DA-33-2-9 Pressure Switch
The Dwyer Instruments DA-33-2-9 Pressure Switch is a heavy-duty Bourdon tube-operated control designed for precision in demanding HVACR and industrial process environments. This Mercoid Series DA model features an adjustable operating range of 10 to 300 psig, providing reliable SPST (Single Pole Single Throw) switching logic for high-pressure or low-pressure limit control. Engineered for vertical installation via a flange mount, the DA-33-2-9 includes a visible calibrated dial, allowing technicians to verify setpoints and adjustable deadband settings without exposing internal components to the environment. The brass Bourdon tube and wetted materials ensure compatibility with air, water, and non-corrosive gases up to 180°F. For contractors managing pump systems or commercial boilers, this 10 amp rated pressure switch offers the repeatable performance needed to prevent equipment short-cycling and ensure safe operational thresholds. Its rugged housing and external thumbscrew adjustments facilitate rapid field calibration and long-term stability in high-vibration applications.
Key Benefits- Adjustable Deadband: Dual external adjustments allow for independent setting of high and low operating points across the full scale.
- Enhanced Visibility: The integrated calibrated dial enables fast status checks and setpoint verification at a glance.
- Industrial Durability: Robust flange mount configuration and Bourdon tube mechanism provide high sensitivity and 1% repeatability.
- Contractor-Friendly Setup: External thumbscrews eliminate the need for specialized tools during setpoint calibration, reducing installation time.
What is the maximum temperature rating for this switch?
The Dwyer DA-33-2-9 is rated for a maximum process temperature of 180°F (82°C).
Can this pressure switch be mounted in any orientation?
For optimal accuracy and to maintain the integrity of the mercury switch or snap action mechanism, this unit must be mounted vertically.
Is the deadband fixed or adjustable on this model?
The DA series models, including the DA-33-2-9, feature a fully adjustable deadband, whereas DS models typically feature a fixed differential.
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.
Dwyer Instruments DA-33-2-9 Pressure Switch
The Dwyer Instruments DA-33-2-9 Pressure Switch is a heavy-duty Bourdon tube-operated control designed for precision in demanding HVACR and industrial process environments. This Mercoid Series DA model features an adjustable operating range of 10 to 300 psig, providing reliable SPST (Single Pole Single Throw) switching logic for high-pressure or low-pressure limit control. Engineered for vertical installation via a flange mount, the DA-33-2-9 includes a visible calibrated dial, allowing technicians to verify setpoints and adjustable deadband settings without exposing internal components to the environment. The brass Bourdon tube and wetted materials ensure compatibility with air, water, and non-corrosive gases up to 180°F. For contractors managing pump systems or commercial boilers, this 10 amp rated pressure switch offers the repeatable performance needed to prevent equipment short-cycling and ensure safe operational thresholds. Its rugged housing and external thumbscrew adjustments facilitate rapid field calibration and long-term stability in high-vibration applications.
Key Benefits- Adjustable Deadband: Dual external adjustments allow for independent setting of high and low operating points across the full scale.
- Enhanced Visibility: The integrated calibrated dial enables fast status checks and setpoint verification at a glance.
- Industrial Durability: Robust flange mount configuration and Bourdon tube mechanism provide high sensitivity and 1% repeatability.
- Contractor-Friendly Setup: External thumbscrews eliminate the need for specialized tools during setpoint calibration, reducing installation time.
What is the maximum temperature rating for this switch?
The Dwyer DA-33-2-9 is rated for a maximum process temperature of 180°F (82°C).
Can this pressure switch be mounted in any orientation?
For optimal accuracy and to maintain the integrity of the mercury switch or snap action mechanism, this unit must be mounted vertically.
Is the deadband fixed or adjustable on this model?
The DA series models, including the DA-33-2-9, feature a fully adjustable deadband, whereas DS models typically feature a fixed differential.
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
The Dwyer Instruments DA-33-2-9 Pressure Switch is a heavy-duty Bourdon tube-operated control designed for precision in demanding HVACR and industrial process environments. This Mercoid Series DA model features an adjustable operating range of 10 to 300 psig, providing reliable SPST (Single Pole Single Throw) switching logic for high-pressure or low-pressure limit control. Engineered for vertical installation via a flange mount, the DA-33-2-9 includes a visible calibrated dial, allowing technicians to verify setpoints and adjustable deadband settings without exposing internal components to the environment. The brass Bourdon tube and wetted materials ensure compatibility with air, water, and non-corrosive gases up to 180°F. For contractors managing pump systems or commercial boilers, this 10 amp rated pressure switch offers the repeatable performance needed to prevent equipment short-cycling and ensure safe operational thresholds. Its rugged housing and external thumbscrew adjustments facilitate rapid field calibration and long-term stability in high-vibration applications.
Key Benefits- Adjustable Deadband: Dual external adjustments allow for independent setting of high and low operating points across the full scale.
- Enhanced Visibility: The integrated calibrated dial enables fast status checks and setpoint verification at a glance.
- Industrial Durability: Robust flange mount configuration and Bourdon tube mechanism provide high sensitivity and 1% repeatability.
- Contractor-Friendly Setup: External thumbscrews eliminate the need for specialized tools during setpoint calibration, reducing installation time.
What is the maximum temperature rating for this switch?
The Dwyer DA-33-2-9 is rated for a maximum process temperature of 180°F (82°C).
Can this pressure switch be mounted in any orientation?
For optimal accuracy and to maintain the integrity of the mercury switch or snap action mechanism, this unit must be mounted vertically.
Is the deadband fixed or adjustable on this model?
The DA series models, including the DA-33-2-9, feature a fully adjustable deadband, whereas DS models typically feature a fixed differential.
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.
