
Dwyer Instruments A6-251221 Pressure Switch
For contractors requiring a dependable solution for extended-duty applications, the Dwyer Instruments A6-251221 Pressure Switch provides precision and setpoint integrity in a compact brass housing. This unit is specifically engineered to handle adjustable 1.1-3 PSI range requirements, making it a staple for monitoring air, motor oils, transmission fluids, and various hydrocarbon media. The SPDT snap-action switch ensures reliable electrical transitions, while the polyimide film diaphragm offers excellent chemical compatibility and thermal stability across a wide operating temperature range from -40 to 248°F.
Installation is streamlined with a standard 1/4 inch NPT male connection, and the adjustable pressure switch design allows for easy field calibration. With an IP65 weatherproof rating when used with a cover, this Dwyer A6 series switch is built for harsh environments. It supports resistive loads up to 15A at 6VDC and inductive HVAC pressure switch loads at 120/240VAC. Whether you are performing an A6-251221 replacement or integrating it into an OEM process, this component delivers the repeatable performance necessary for high-cycle industrial systems.
Key Benefits for Technicians:- Field Adjustable Design: Simple internal screw adjustment allows you to fine-tune the 1.1 to 3 PSI setpoint for precise system matching.
- High Cycle Reliability: Constructed for extended duty cycles, reducing the frequency of maintenance-related downtime in hydraulic and pneumatic systems.
- Multi-Medium Compatibility: The brass base and polyimide diaphragm are compatible with air, oils, and fuels, excluding water.
- Flexible Mounting: The design is not position-sensitive, allowing for installation in any orientation without affecting setpoint accuracy.
- Robust Electrical Ratings: Features a versatile SPDT configuration capable of handling various voltage and current requirements.
- How do I adjust the setpoint on this model? Remove the protective cap to access the internal adjustment screw; turn clockwise to increase the pressure threshold and counter-clockwise to decrease it.
- Can this switch be used for water applications? No, the Series A6 with a brass base is intended for air and hydrocarbon media; contact us for stainless steel options for aqueous solutions.
- What is the maximum pressure this switch can withstand? The A6-251221 has an operating pressure limit of 150 PSI and a proof pressure of 500 PSI to prevent damage during system surges.
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: $36.46
-65%$36.46
$12.76Dwyer Instruments A6-251221 Pressure Switch
For contractors requiring a dependable solution for extended-duty applications, the Dwyer Instruments A6-251221 Pressure Switch provides precision and setpoint integrity in a compact brass housing. This unit is specifically engineered to handle adjustable 1.1-3 PSI range requirements, making it a staple for monitoring air, motor oils, transmission fluids, and various hydrocarbon media. The SPDT snap-action switch ensures reliable electrical transitions, while the polyimide film diaphragm offers excellent chemical compatibility and thermal stability across a wide operating temperature range from -40 to 248°F.
Installation is streamlined with a standard 1/4 inch NPT male connection, and the adjustable pressure switch design allows for easy field calibration. With an IP65 weatherproof rating when used with a cover, this Dwyer A6 series switch is built for harsh environments. It supports resistive loads up to 15A at 6VDC and inductive HVAC pressure switch loads at 120/240VAC. Whether you are performing an A6-251221 replacement or integrating it into an OEM process, this component delivers the repeatable performance necessary for high-cycle industrial systems.
Key Benefits for Technicians:- Field Adjustable Design: Simple internal screw adjustment allows you to fine-tune the 1.1 to 3 PSI setpoint for precise system matching.
- High Cycle Reliability: Constructed for extended duty cycles, reducing the frequency of maintenance-related downtime in hydraulic and pneumatic systems.
- Multi-Medium Compatibility: The brass base and polyimide diaphragm are compatible with air, oils, and fuels, excluding water.
- Flexible Mounting: The design is not position-sensitive, allowing for installation in any orientation without affecting setpoint accuracy.
- Robust Electrical Ratings: Features a versatile SPDT configuration capable of handling various voltage and current requirements.
- How do I adjust the setpoint on this model? Remove the protective cap to access the internal adjustment screw; turn clockwise to increase the pressure threshold and counter-clockwise to decrease it.
- Can this switch be used for water applications? No, the Series A6 with a brass base is intended for air and hydrocarbon media; contact us for stainless steel options for aqueous solutions.
- What is the maximum pressure this switch can withstand? The A6-251221 has an operating pressure limit of 150 PSI and a proof pressure of 500 PSI to prevent damage during system surges.
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.
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Description
For contractors requiring a dependable solution for extended-duty applications, the Dwyer Instruments A6-251221 Pressure Switch provides precision and setpoint integrity in a compact brass housing. This unit is specifically engineered to handle adjustable 1.1-3 PSI range requirements, making it a staple for monitoring air, motor oils, transmission fluids, and various hydrocarbon media. The SPDT snap-action switch ensures reliable electrical transitions, while the polyimide film diaphragm offers excellent chemical compatibility and thermal stability across a wide operating temperature range from -40 to 248°F.
Installation is streamlined with a standard 1/4 inch NPT male connection, and the adjustable pressure switch design allows for easy field calibration. With an IP65 weatherproof rating when used with a cover, this Dwyer A6 series switch is built for harsh environments. It supports resistive loads up to 15A at 6VDC and inductive HVAC pressure switch loads at 120/240VAC. Whether you are performing an A6-251221 replacement or integrating it into an OEM process, this component delivers the repeatable performance necessary for high-cycle industrial systems.
Key Benefits for Technicians:- Field Adjustable Design: Simple internal screw adjustment allows you to fine-tune the 1.1 to 3 PSI setpoint for precise system matching.
- High Cycle Reliability: Constructed for extended duty cycles, reducing the frequency of maintenance-related downtime in hydraulic and pneumatic systems.
- Multi-Medium Compatibility: The brass base and polyimide diaphragm are compatible with air, oils, and fuels, excluding water.
- Flexible Mounting: The design is not position-sensitive, allowing for installation in any orientation without affecting setpoint accuracy.
- Robust Electrical Ratings: Features a versatile SPDT configuration capable of handling various voltage and current requirements.
- How do I adjust the setpoint on this model? Remove the protective cap to access the internal adjustment screw; turn clockwise to increase the pressure threshold and counter-clockwise to decrease it.
- Can this switch be used for water applications? No, the Series A6 with a brass base is intended for air and hydrocarbon media; contact us for stainless steel options for aqueous solutions.
- What is the maximum pressure this switch can withstand? The A6-251221 has an operating pressure limit of 150 PSI and a proof pressure of 500 PSI to prevent damage during system surges.
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.












