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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

AUD77.00 PSW21C

PLACE ORDER
  • 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

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
Description
PSW21 SWITCHES WITH SPDT SWITCH, 1/8 MNPT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
PSW21A
Consult Sales  
Availability: 
 
 
3 to 7 inH2O setpoint range, 3 A switch rating
PSW21B
Consult Sales  
Availability: 
 
 
5 to 35 inH2O setpoint range, 5 A switch rating
PSW21C
Consult Sales  
Availability: 
 
 
1 to 6 psig setpoint range, 21 A switch rating
PSW21D
Consult Sales  
Availability: 
 
 
4 to 11 psig setpoint range, 25 A switch rating
PSW21E
Consult Sales  
Availability: 
 
 
9 to 18 psig setpoint range, 25 A switch rating
PSW21F
Consult Sales  
Availability: 
 
 
15 to 28 psig setpoint range, 25 A switch rating
PSW21G
AUD87.00
Availability: 1 week
 
25 to 40 psig setpoint range, 25 A switch rating
PSW21H
Consult Sales  
Availability: 
 
 
35 to 65 psig setpoint range, 25 A switch rating
PSW21J
Consult Sales  
Availability: 
 
 
50 to 100 psig setpoint range, 25 A switch rating
PSW21K
Consult Sales  
Availability: 
 
 
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
Consult Sales  
Availability: 
 
 
3 to 7 inWC vacuum setpoint range, 3 A switch rating
PSW21M
Consult Sales  
Availability: 
 
 
6 to 16 inWC vacuum setpoint range, 10 A switch rating
PSW21N
Consult Sales  
Availability: 
 
 
13 to 25 inWC vacuum setpoint range, 21 A switch rating
PSW21P
Consult Sales  
Availability: 
 
 
20 to 40 inWC vacuum setpoint range, 21 A switch rating
PSW21Q
Consult Sales  
Availability: 
 
 
35 to 80 inWC vacuum setpoint range, 21 A switch rating
PSW21R
Consult Sales  
Availability: 
 
 
75 to 150 inWC vacuum setpoint range, 21 A switch rating
PSW21T
Consult Sales  
Availability: 
 
 
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
Consult Sales  
Availability: 
 
 
10 to 35 inH2O setpoint range, 5 A switch rating
PSW21CD
Consult Sales  
Availability: 
 
 
1 to 6 psig setpoint range, 21 A switch rating
PSW21DD
Consult Sales  
Availability: 
 
 
4 to 11 psig setpoint range, 25 A switch rating
PSW21ED
Consult Sales  
Availability: 
 
 
9 to 18 psig setpoint range, 25 A switch rating
PSW21FD
Consult Sales  
Availability: 
 
 
15 to 28 psig setpoint range, 25 A switch rating
PSW21GD
Consult Sales  
Availability: 
 
 
25 to 40 psig setpoint range, 25 A switch rating
PSW21HD
Consult Sales  
Availability: 
 
 
35 to 65 psig setpoint range, 25 A switch rating
PSW21JD
Consult Sales  
Availability: 
 
 
50 to 100 psig setpoint range, 25 A switch rating
PSW21KD
Consult Sales  
Availability: 
 
 
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
Consult Sales  
Availability: 
 
 
6 to 16 inWC vacuum setpoint range, 10 A switch rating
PSW21ND
Consult Sales  
Availability: 
 
 
13 to 25 inWC vacuum setpoint range, 21 A switch rating
PSW21PD
Consult Sales  
Availability: 
 
 
20 to 40 inWC vacuum setpoint range, 21 A switch rating
PSW21QD
Consult Sales  
Availability: 
 
 
35 to 80 inWC vacuum setpoint range, 21 A switch rating
PSW21RD
Consult Sales  
Availability: 
 
 
75 to 150 inWC vacuum setpoint range, 21 A switch rating
PSW21TD
Consult Sales  
Availability: 
 
 
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
Consult Sales  
Availability: 
 
 
3 to 7 inH2O setpoint range, 3 A switch rating
PSW22B
Consult Sales  
Availability: 
 
 
5 to 35 inH2O setpoint range, 5 A switch rating
PSW22C
Consult Sales  
Availability: 
 
 
1 to 6 psig setpoint range, 21 A switch rating
PSW22D
Consult Sales  
Availability: 
 
 
4 to 11 psig setpoint range, 25 A switch rating
PSW22E
Consult Sales  
Availability: 
 
 
9 to 18 psig setpoint range, 25 A switch rating
PSW22F
Consult Sales  
Availability: 
 
 
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
Consult Sales  
Availability: 
 
 
10 to 35 inH2O setpoint range, 5 A switch rating
PSW22CD
Consult Sales  
Availability: 
 
 
1 to 6 psig setpoint range, 21 A switch rating
PSW22DD
Consult Sales  
Availability: 
 
 
4 to 11 psig setpoint range, 25 A switch rating
PSW22ED
Consult Sales  
Availability: 
 
 
9 to 18 psig setpoint range, 25 A switch rating
PSW22FD
Consult Sales  
Availability: 
 
 
15 to 28 psig setpoint range, 25 A switch rating
† All amounts shown in AUD
 Ordering Example: (1) PSW21D adjustable pressure switch, 1/8 MNPT fitting, 4-11 psig setpoint range, 25 A switch, AUD74.00
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