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Pressure and Vacuum Switches, Compact, Rugged, Adjustable

PSW21 and PSW22 Series

PSW21 and PSW22 Series:Pressure and Vacuum Switches, Compact, Rugged, Adjustable

air pressure switches

$35.00 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
View related products - Pressure Switches

Description

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)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/Desc.
Availability
Price
Description
Qty
RoHS
PSW21 SWITCHES WITH SPDT SWITCH, 1/8 MNPT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
Click to expand/minimize a list of what others bought with thePSW21A
PSW21A
Star
Availability:4 weeks 
$40.00   
3 to 7 inH2O setpoint range, 3 A switch rating
RoHS compliant
Click to expand/minimize a list of what others bought with thePSW21B
PSW21B
Star
Availability:In Stock 
$40.00   
5 to 35 inH2O setpoint range, 5 A switch rating
RoHS compliant
Click to expand/minimize a list of what others bought with thePSW21C
PSW21C
Star
Availability:3 weeks 
$35.00   
1 to 6 psig setpoint range, 21 A switch rating
RoHS compliant
  
PSW21D
Star
Availability:In Stock 
$34.00   
4 to 11 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21E
Star
Availability:In Stock 
$35.00   
9 to 18 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21F
Star
Availability:In Stock 
$35.00   
15 to 28 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21G
Star
Availability:In Stock 
$35.00   
25 to 40 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21H
Star
Availability:In Stock 
$35.00   
35 to 65 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21J
Star
Availability:In Stock 
$35.00   
50 to 100 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21K
Star
Availability:3 weeks 
$35.00   
75 to 120 psig setpoint range, 25 A switch rating
RoHS compliant
PSW21 VACUUM SWITCHES WITH SPDT SWITCH, 1/8 MNPT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
  
PSW21L
Star
Availability:4 weeks 
$48.00   
3 to 7 inWC vacuum setpoint range, 3 A switch rating
RoHS compliant
  
PSW21M
Star
Availability:1 week 
$52.00   
6 to 16 inWC vacuum setpoint range, 10 A switch rating
RoHS compliant
  
PSW21N
Star
Availability:6 weeks 
$48.00   
13 to 25 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
  
PSW21P
Star
Availability:In Stock 
$48.00   
20 to 40 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
  
PSW21Q
Star
Availability:In Stock 
$48.00   
35 to 80 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
  
PSW21R
Star
Availability:In Stock 
$48.00   
75 to 150 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
  
PSW21T
Star
Availability:In Stock 
$48.00   
145 to 300 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
PSW21 SWITCHES WITH DPDT SWITCH, 1/8 MNPT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
  
PSW21BD
Star
Availability:3 weeks 
$52.00   
10 to 35 inH2O setpoint range, 5 A switch rating
RoHS compliant
  
PSW21CD
Star
Availability:In Stock 
$52.00   
1 to 6 psig setpoint range, 21 A switch rating
RoHS compliant
  
PSW21DD
Star
Availability:6 weeks 
$48.00   
4 to 11 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21ED
Star
Availability:In Stock 
$48.00   
9 to 18 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21FD
Star
Availability:In Stock 
$48.00   
15 to 28 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21GD
Star
Availability:6 weeks 
$52.00   
25 to 40 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21HD
Star
Availability:6 weeks 
$52.00   
35 to 65 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21JD
Star
Availability:In Stock 
$52.00   
50 to 100 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW21KD
Star
Availability:In Stock 
$52.00   
75 to 120 psig setpoint range, 25 A switch rating
RoHS compliant
PSW21 VACUUM SWITCHES WITH DPDT SWITCH, 1/8 MNPT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
  
PSW21MD
Star
Availability:In Stock 
$55.00   
6 to 16 inWC vacuum setpoint range, 10 A switch rating
RoHS compliant
  
PSW21ND
Star
Availability:6 weeks 
$55.00   
13 to 25 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
  
PSW21PD
Star
Availability:In Stock 
$55.00   
20 to 40 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
  
PSW21QD
Star
Availability:In Stock 
$55.00   
35 to 80 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
  
PSW21RD
Star
Availability:6 weeks 
$55.00   
75 to 150 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
  
PSW21TD
Star
Availability:In Stock 
$55.00   
145 to 300 inWC vacuum setpoint range, 21 A switch rating
RoHS compliant
PSW22 SWITCHES WITH SPDT SWITCH, CENTER SPOUT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
  
PSW22A
Star
Availability:In Stock 
$40.00   
3 to 7 inH2O setpoint range, 3 A switch rating
RoHS compliant
  
PSW22B
Star
Availability:6 weeks 
$40.00   
5 to 35 inH2O setpoint range, 5 A switch rating
RoHS compliant
  
PSW22C
Star
Availability:In Stock 
$35.00   
1 to 6 psig setpoint range, 21 A switch rating
RoHS compliant
  
PSW22D
Star
Availability:In Stock 
$35.00   
4 to 11 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW22E
Star
Availability:In Stock 
$35.00   
9 to 18 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW22F
Star
Availability:In Stock 
$35.00   
15 to 28 psig setpoint range, 25 A switch rating
RoHS compliant
PSW22 SWITCHES WITH DPDT SWITCH, CENTER SPOUT FITTING AND 9/16 THREADED MOUNTING NUT INCLUDED
  
PSW22BD
Star
Availability:6 weeks 
$55.00   
10 to 35 inH2O setpoint range, 5 A switch rating
RoHS compliant
  
PSW22CD
Star
Availability:6 weeks 
$52.00   
1 to 6 psig setpoint range, 21 A switch rating
RoHS compliant
  
PSW22DD
Star
Availability:6 weeks 
$52.00   
4 to 11 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW22ED
Star
Availability:6 weeks 
$52.00   
9 to 18 psig setpoint range, 25 A switch rating
RoHS compliant
  
PSW22FD
Star
Availability:6 weeks 
$52.00   
15 to 28 psig setpoint range, 25 A switch rating
RoHS compliant
All amounts shown in USD
Ordering Example: (1) PSW21D adjustable pressure switch, 1/8 MNPT fitting, 4-11 psig setpoint range, 25 A switch, $34.00
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