As an easy guide for you we have created this simple cross reference guide to help you find the adjustable pressure and vacuum switch part you need. If you have one of the part numbers listed below, simply match it to our part number.

Presair designs and manufactures adjustable pressure and vacuum switches. Presair switches are UL and CUL Recognized. All switches are made in the United States. All of our switches are 100% tested with a 100,000+ cycle life. Our direct customer service would be happy to help you find the right switch for your application.

With our field-adjustable pressure switches, our customers are provided with the flexibility to easily adjust their switch parameters on-site. Each of these switches have pressure options ranging from 0.25 inches of water gauge to 125 psig. Our adjustable pressure and vacuum switch products have various pressure connects, mountings, and electrical ratings available. With the customization capabilities of our compact switches, they also meet the needs of original equipment manufacturers and instrument makers for a low-cost, stable, and repeatable switch. They are made with acetal plastic to minimize the amount of moisture absorption and maintain dimensional stability. All switches are 100% tested at high and low settings, and at the proof temperature before leaving the shop. Units are delivered with setpoint at the low end of the adjustable range, and can easily be adjusted in the field using a hex head screw at the center of the pressure switch.

CUSTOM PRESSURE & VACUUM SWITCHES

Custom pressure and vacuum switches are available. Custom options include factory setting at specified set point and DPDT switches can be configured for different pressure settings.

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air switch, pressure switch, vacuum switch, adjustable pressure switch, adjustable vacuum switch, air pressure switch**Tip: Search this list for your part number using the Find function of your browser – Google Chrome’s shortcut is ctrl-f.

Can’t find your part number listed? Give our direct support a call with your switch or application requirements and one of our customer service representatives will assist you!

Your Part Number Our Part Number Item Description Buy Now
6731 Series & 6732 Series Adjustable Pressure Switches Adjustable low pressure switches 

Range: 1.5 inches of water to 16 psig

Switch Rating: 21A@250VAC

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6741 Series & 6742 Series Adjustable Pressure Switches Adjustable medium pressure switches 

Range: 1.5 Psi to 125 Psi

Switch Rating: 21A@250VAC

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3000 Series Adjustable Pressure Switches Adjustable pressure switches

Range: 2 inches of water to 100 psi

Switch Rating: 21A@250VAC

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3900 Series Adjustable Pressure Switches Adjustable pressure switches

Range: 6 inches of water to 5 psi

Switch Rating: 21A@250VAC

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4000 Series Adjustable Pressure Switches Adjustable pressure switches

Range: 6 inches of water to 5 psi

Switch Rating: 21A@250VAC

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V4000 Series Adjustable Vacuum Switches Adjustable vacuum switches

Range: 2 inches of water to 300 inches of water.

Switch Rating: 21A@250VAC

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PSW21A PM10103E Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 3-7 inches of water rising

Switch Rating: 3A@250VAC (resistive)

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PSW21B PM10306A Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 5-35 inches of water rising

Switch Rating: 5A@250VAC (resistive)

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PSW21C PM11120E Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 1-6 Psig Rising

Switch Rating: 21A@250VAC (resistive)

$44.95
PSW21D PM12540E Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 4-11 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21E PM12550E Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 9-18 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21F PM12560E Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 15-28 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21G PM12570E Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 25-40 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21H PM12580E Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 35-65 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21J PM12590E Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 50-100 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21K PM12595E Pressure Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 75-120 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21L VM10103E Vacuum Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 5-7 inches of water rising

Switch Rating: 3A@250VAC (resistive)

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PSW21M VM10306E Vacuum Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 6-16 inches of water rising

Switch Rating: 5A@250VAC (resistive)

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PSW21N VM10510E Vacuum Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 13-25 inches of water rising

Switch Rating: 10A@250VAC (resistive)

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PSW21P VM11115E Vacuum Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 20-40 inches of water rising

Switch Rating: 21A@250VAC (resistive)

$44.95
PSW21Q VM11120E Vacuum Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 35-80 inches of water rising

Switch Rating: 21A@250VAC (resistive)

$44.95
PSW21R VM11130E Vacuum Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 75-150 inches of water rising

Switch Rating: 21A@250VAC (resistive)

$44.95
PSW21T VM11140E Vacuum Switch with SPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 145-300 inches of water rising

Switch Rating: 21A@250VAC (resistive)

$44.95
PSW21BD PM21306E Pressure Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 5-35 inches of water rising

Switch Rating: 5A@250VAC (resistive)

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PSW21CD PM21120E Pressure Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 1-6 Psig Rising

Switch Rating: 21A@250VAC (resistive)

$49.95
PSW21DD PM22540E Pressure Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 4-11 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21ED PM22550E Pressure Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 9-18 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21FD PM22560E Pressure Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 15-28 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21GD PM22570E Pressure Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 25-40 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21HD PM22580E Pressure Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 35-65 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21JD PM22590E Pressure Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 50-100 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21KD PM22595E Pressure Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 75-120 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW21MD VM21306E Vacuum Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 6-16 inches of water rising

Switch Rating: 5A@250VAC (resistive)

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PSW21ND VM20510E Vacuum Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 13-25 inches of water rising

Switch Rating: 10A@250VAC (resistive)

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PSW21PD VM21115E Vacuum Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 20-40 inches of water rising

Switch Rating: 21A@250VAC (resistive)

$49.95
PSW21QD VM21120E Vacuum Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 35-80 inches of water rising

Switch Rating: 21A@250VAC (resistive)

$49.95
PSW21RD VM21130E Vacuum Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 75-150 inches of water rising

Switch Rating: 21A@250VAC (resistive)

$49.95
PSW21TD VM21140E Vacuum Switch with DPDT Switch, 1/8 MNPT Fitting and 9/16 Threaded Mounting Nut

Range: 145-300 inches of water rising

Switch Rating: 21A@250VAC (resistive)

$49.95
PSW22A PT10103A Pressure Switch with SPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 3-7 inches of water rising

Switch Rating: 3A@250VAC (resistive)

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PSW22B PT10306A Pressure Switch with SPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 5-35 inches of water rising

Switch Rating: 5A@250VAC (resistive)

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PSW22C PT11120A Pressure Switch with SPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 1-6 Psig Rising

Switch Rating: 21A@250VAC (resistive)

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PSW22D PT12540A Pressure Switch with SPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 4-11 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW22E PT12550A Pressure Switch with SPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 9-18 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW22F PT12560A Pressure Switch with SPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 15-28 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW22BD PT21306A Pressure Switch with DPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 5-35 inches of water rising

Switch Rating: 5A@250VAC (resistive)

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PSW22CD PT21120A Pressure Switch with DPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 1-6 Psig Rising

Switch Rating: 21A@250VAC (resistive)

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PSW22DD PT22540A Pressure Switch with DPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 4-11 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW22ED PT22550A Pressure Switch with DPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 9-18 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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PSW22FD PT22560A Pressure Switch with DPDT Switch, Center Spout Fitting and 9/16 Threaded Mounting Nut

Range: 15-28 Psig Rising

Switch Rating: 25A@250VAC (resistive)

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Pneumatic Switches

Presair pneumatic switches are great for safe, economical control of consumer, industrial, medical or other products and appliances in wet, chemical or explosive atmospheres, or just for added safety.

High Quality

Presair switches are 100% testing before leaving our facilities.

Made in U.S.A.

Products are designed & manufactured in Eau Claire, Wisconsin, USA.

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