Presair
Adjustable Switches
These switches allow for simple electrical on/off control over air pressures and vacuums. As pressure or vacuum rises or falls, one contact opens as the other closes. This provides a perfect solution for monitoring, controlling, and notifying. All are field adjustable but can be preset at the factory if preferred.
Dual switches are also available, factory set to operate two separate microswitches at different pressure or vacuum settings. These switches come in multiple body styles, providing the necessary versatility for air hose connections.
custom options
Variety of options available to meet the needs of original equipment manufacturers.
high quality
Highly stable with good repeat accuracy. All switches are 100% tested at high and low settings and at proof pressure.
safe & economical
Remote operation with complete electrical isolation. UL Recognized. Costs less than conventional controls
made in u.s.a.
Presair switches are designed & manufactured in Eau Claire, Wisconsin U.S.A.
ADJUSTABLE PRESSURE SWITCHES
Presair is a leading manufacturer of adjustable pressure switches. Our field adjustable pressure switches allow our customers the flexibility of easily setting the switch parameters in the field as driven by the needs of the project. Adjustable pressure switches span the range of pressure from 0.25 inches of water gauge to 125 psig. Available in a variety of pressure connects, mountings and electrical ratings.
ADJUSTABLE VACUUM SWITCHES
Presair is a leading manufacturer of adjustable vacuum switches. Our field adjustable vacuum switches allow our customers the flexibility of easily setting the switch parameters in the field as driven by the needs of the project. Adjustable vacuum switch products span the range on increasing vacuum of 2.5 inches of water gauge to 300 inches of water gauge. Available in a variety of air connections, mountings and electrical ratings.
STANDARD AIR SWITCHES
The Presair Air Switching system uses an air bellow actuator joined by tubing to an air switch contained within the equipment or appliance to be switched. Pushing the actuator creates enough pressure (up to 3 psig) to operate the air switch which safely controls the equipment. There is complete electrical isolation with no voltage – low or high – to worry about at the point of actuation. No external compressed air is required. These switches are not available as a field adjustment, but follow the same body style and connections as our adjustable pressure and vacuum switches.