Pressure Switches

Tjernlund PS1503 Positive Air Flow Pressure Switch

The Tjernlund Duct Airstat senses positive pressure in a forced air heating and/or cooling system. Single pole, single throw, snap-acting switch. Typically used to activate boosting fans.

From $46.00

Dwyer Series ADPS HVAC Differential Pressure Switch

Designed for pressure, vacuum, and differential pressures. Available with settings from 0.08" w.c. (20 Pa) up to 20" w.c. (5000 Pa).

From $21.25

Greystone GFS Pressure Switches

General purpose airflow proving switch designed for HVAC applications. Used to sense positive, negative, or differential air pressure.

From $38.20

Dwyer Series DX Wet/Wet Differential Pressure Switches

Wet to wet differential pressure switch. Differential set point ranges are available from 2.5 to 75 psid on increasing DP and 1.0 to 67 psid on decreasing DP.

From $65.00

Dwyer Series 1900 Compact Low Differential Pressure Switch

For air and non-combustible compatible gases. Set points from 0.07 to 20" w.c. (1.8 to 508 mm). Set point adjustment is easy with range screw.

From $44.25

Dwyer Series 1831 DPDT Low Differential Manual Reset Pressure Switches

DPDT switch with manual reset. Combines small size with 4% set point repeatability. No power is required to operate the DPDT switch.

From $115.00

Greystone AFS Pressure Switches

General purpose airflow proving switch designed for HVAC and Energy Management applications. It may be used to sense positive, negative, or differential air pressure.

From $64.20

Dwyer Stainless Steel Static Pressure Tips And Accessories

Pressure sensor tips and accessories. Straight and hooked.

From $9.25
 

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