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Pressure and Vacuum Switches, Compact, Rugged, Adjustable - Discontinued

PSW21 and PSW22 Series

air pressure switches | PSW21 and PSW22 Series

air pressure switches

CAD44.50 PSW21C

RoHS
  • Adjustable Setpoint
  • 1/8 NPT or Center Spout for 1/8 ID Tubing
  • Pressure and Vacuum Models Available
  • UL Recognized, CSA Certified Up to 25 Amps
Pressure Switches - View related products

Description

The PSW21 and PSW22 Series have been discontinued. Some stock still remains; please check the specific item you are seeking to see if there is remaining inventory. Please see the Pressure Switch Product Finder or contact Omega Sales for possible alternatives.

These compact pressure and vacuum switches are designed and manufactured to exacting standards to meet the needs of OEM manufacturers and instrument makers for a low cost, stable, repeatable switch. Plastic mechanisms and housings are acetal to minimize moisture absorption and maintain dimensional stability. Plastic welding is accomplished using advanced microprocessor controlled ultrasonic welding equipment. All switches are 100% tested at high and low settings and at the proof pressure. Units are delivered with the setpoint at approximately the midpoint of the adjustable range.

CUSTOM SWITCHES
Custom pressure switches are available, with a 50 piece minimum order; please consult Pressure Engineering for price and delivery. Cusotm options include factory setting at specified setpoint, Noryl switch body, Nitrile diaphragm, and DPDT switches can be configured for different pressure settings.


SPECIFICATIONS
Approval: UL recognized, CSA certified switches; microswitches bear the CE and ENEC mark
Temperature Range: -10 to 70°C (14 to 158°F)
Setpoint Accuracy: ±10% of setting at 70°F
Note: Pressure settings may change over the temperature range.
Hysteresis (Deadband): 15 to 25% of the setpoint.
Electrical: See the table for the switch amp rating, 250 Vac
Terminals: 6.35 mm (0.25") standard “Slide-On” male
Materials of Construction
Body and Mechanism: Acetal
Diaphragm: EPDM (Ethylene- Propylene Diene Monomer)
Screws: Stainless or zinc plated steel
Springs: Stainless Steel
Media Compatibility: Air, water, and many other fluids and gases that are compatible with EPDM and Acetal
Note: Mineral Oil and similar fluids are not compatible with EPDM. Request Nitrile diaphragm (Consult with Pressure Engineering for Custom Switch info).
Weight: 50 g (1.8 oz)
Overall Dimensions: Approx. 54 x 76 x 45 mm (2.125 x 3 x 1.75")
Setting: The Pressure Switch is field adjustable using the hex head set screw at the center of the pressure switch (PSW 21/22-WRENCH).
The Vacuum Switch is field adjustable using the Phillips head screw on the switch carrier.
Dual Pressure Switch: The DPDT (two switches) will both change state at approximately the same setpoint. On DPDT units, one switch may be set to lead or lag the other (see Custom Switches above).
Place Order(Specify Model Number)
Part Number/ Desc.
Qty
RoHS
Description
PSW21 SWITCHES WITH SPDT SWITCH, 1/8 MNPT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
PSW21A Star
Consult Sales  
Availability: 
 
RoHS compliant
3 to 7 inH2O setpoint range, 3 A switch rating
PSW21B Star
Consult Sales  
Availability: 
 
RoHS compliant
5 to 35 inH2O setpoint range, 5 A switch rating
PSW21C Star
Consult Sales  
Availability: 
 
RoHS compliant
1 to 6 psig setpoint range, 21 A switch rating
PSW21D Star
Consult Sales  
Availability: 
 
RoHS compliant
4 to 11 psig setpoint range, 25 A switch rating
PSW21E Star
Consult Sales  
Availability: 
 
RoHS compliant
9 to 18 psig setpoint range, 25 A switch rating
PSW21F Star
CAD44.00
Availability: In Stock
RoHS compliant
15 to 28 psig setpoint range, 25 A switch rating
PSW21G Star
CAD44.00
Availability: In Stock
RoHS compliant
25 to 40 psig setpoint range, 25 A switch rating
PSW21H Star
Consult Sales  
Availability: 
 
RoHS compliant
35 to 65 psig setpoint range, 25 A switch rating
PSW21J Star
CAD44.00
Availability: 1 week
RoHS compliant
50 to 100 psig setpoint range, 25 A switch rating
PSW21K Star
Consult Sales  
Availability: 
 
RoHS compliant
75 to 120 psig setpoint range, 25 A switch rating
PSW21 VACUUM SWITCHES WITH SPDT SWITCH, 1/8 MNPT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
PSW21L Star
CAD60.00
Availability: 1 week
RoHS compliant
3 to 7 inWC vacuum setpoint range, 3 A switch rating
PSW21M Star
CAD65.00
Availability: 1 week
RoHS compliant
6 to 16 inWC vacuum setpoint range, 10 A switch rating
PSW21N Star
Consult Sales  
Availability: 
 
RoHS compliant
13 to 25 inWC vacuum setpoint range, 21 A switch rating
PSW21P Star
Consult Sales  
Availability: 
 
RoHS compliant
20 to 40 inWC vacuum setpoint range, 21 A switch rating
PSW21Q Star
CAD60.00
Availability: 1 week
RoHS compliant
35 to 80 inWC vacuum setpoint range, 21 A switch rating
PSW21R Star
Consult Sales  
Availability: 
 
RoHS compliant
75 to 150 inWC vacuum setpoint range, 21 A switch rating
PSW21T Star
Consult Sales  
Availability: 
 
RoHS compliant
145 to 300 inWC vacuum setpoint range, 21 A switch rating
PSW21 SWITCHES WITH DPDT SWITCH, 1/8 MNPT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
PSW21BD Star
Consult Sales  
Availability: 
 
RoHS compliant
10 to 35 inH2O setpoint range, 5 A switch rating
PSW21CD Star
Consult Sales  
Availability: 
 
RoHS compliant
1 to 6 psig setpoint range, 21 A switch rating
PSW21DD Star
Consult Sales  
Availability: 
 
RoHS compliant
4 to 11 psig setpoint range, 25 A switch rating
PSW21ED Star
Consult Sales  
Availability: 
 
RoHS compliant
9 to 18 psig setpoint range, 25 A switch rating
PSW21FD Star
Consult Sales  
Availability: 
 
RoHS compliant
15 to 28 psig setpoint range, 25 A switch rating
PSW21GD Star
Consult Sales  
Availability: 
 
RoHS compliant
25 to 40 psig setpoint range, 25 A switch rating
PSW21HD Star
CAD65.00
Availability: 1 week
RoHS compliant
35 to 65 psig setpoint range, 25 A switch rating
PSW21JD Star
CAD65.00
Availability: 1 week
RoHS compliant
50 to 100 psig setpoint range, 25 A switch rating
PSW21KD Star
Consult Sales  
Availability: 
 
RoHS compliant
75 to 120 psig setpoint range, 25 A switch rating
PSW21 VACUUM SWITCHES WITH DPDT SWITCH, 1/8 MNPT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
PSW21MD Star
CAD69.00
Availability: 1 week
RoHS compliant
6 to 16 inWC vacuum setpoint range, 10 A switch rating
PSW21ND Star
Consult Sales  
Availability: 
 
RoHS compliant
13 to 25 inWC vacuum setpoint range, 21 A switch rating
PSW21PD Star
CAD69.00
Availability: In Stock
RoHS compliant
20 to 40 inWC vacuum setpoint range, 21 A switch rating
PSW21QD Star
Consult Sales  
Availability: 
 
RoHS compliant
35 to 80 inWC vacuum setpoint range, 21 A switch rating
PSW21RD Star
Consult Sales  
Availability: 
 
RoHS compliant
75 to 150 inWC vacuum setpoint range, 21 A switch rating
PSW21TD Star
CAD69.00
Availability: 1 week
RoHS compliant
145 to 300 inWC vacuum setpoint range, 21 A switch rating
PSW22 SWITCHES WITH SPDT SWITCH, CENTER SPOUT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
PSW22A Star
CAD50.00
Availability: 1 week
RoHS compliant
3 to 7 inH2O setpoint range, 3 A switch rating
PSW22B Star
Consult Sales  
Availability: 
 
RoHS compliant
5 to 35 inH2O setpoint range, 5 A switch rating
PSW22C Star
Consult Sales  
Availability: 
 
RoHS compliant
1 to 6 psig setpoint range, 21 A switch rating
PSW22D Star
Consult Sales  
Availability: 
 
RoHS compliant
4 to 11 psig setpoint range, 25 A switch rating
PSW22E Star
CAD44.00
Availability: 1 week
RoHS compliant
9 to 18 psig setpoint range, 25 A switch rating
PSW22F Star
CAD44.00
Availability: 1 week
RoHS compliant
15 to 28 psig setpoint range, 25 A switch rating
PSW22 SWITCHES WITH DPDT SWITCH, CENTER SPOUT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
PSW22BD Star
Consult Sales  
Availability: 
 
RoHS compliant
10 to 35 inH2O setpoint range, 5 A switch rating
PSW22CD Star
Consult Sales  
Availability: 
 
RoHS compliant
1 to 6 psig setpoint range, 21 A switch rating
PSW22DD Star
Consult Sales  
Availability: 
 
RoHS compliant
4 to 11 psig setpoint range, 25 A switch rating
PSW22ED Star
Consult Sales  
Availability: 
 
RoHS compliant
9 to 18 psig setpoint range, 25 A switch rating
PSW22FD Star
Consult Sales  
Availability: 
 
RoHS compliant
15 to 28 psig setpoint range, 25 A switch rating
All dollar amounts on this site are shown in Canadian currency. Ordering Example: (1) PSW21D adjustable pressure switch, 1/8 MNPT fitting, 4-11 psig setpoint range, 25 A switch, CAD42.50