- HP-1 Pressure Switch
- HP-5 High Pressure Switch
- HP-4 Vacuum Switch
- HP-3 Extended Duty Pressure Switch
- HP-2 Pressure Switch
- AFS Pressure Switches (12-2500 Pa)
- PL05 Pressure Switch (40-800 Pa)
- PL04 Pressure Switch (37-8500 Pa)
- PL06 Pressure Switch (15-2500mbar)
- PL07 Pressure Switches (20-2500Pa)
- PL03 Vacuum Pressure Switch (10-800 mbar)
- PL02 Pressure Switch (5-1000 mbar)
- PA03 Air Pressure Switch
- PS04 Water Pressure Switch
- PS03 Water Pressure Switch
- PS02 Water Pressure Switch
- PS01 Water Pressure Switch
- PA04 Air Pressure Switch
- PA02 High Air Pressure Switch
- PA01 3-Phase Air Pressure Switch
- Air Pressure Switch
- PL01 Low Pressure Switch (5mbar-300mbar)
- WS-1 Water Level Switch
- HS-2 Air Switch (20-800 mbar)
- HS-1 Air Switch (20-1000 mbar)
PS04 Water Pressure Switch
PS04-W Water pressure switches provide time-tested, reliable control for automatic water systems. The Water Pressure switch is universally acceptable for use as original equipment on water well pumps or pumping systems.
PS04-WR Water pressure switch prevents the pump from starting whenever the system falls considerable below cut-in pressure. Upon the restorations of the water supply, it will automatically cut-in.
A manual reset lever is depressed until a build up of system pressure permits automatic operation. Its simple design makes it easy to use for professionals and nonprofessionals alike.
Features of PS04-W Water Pressure Switch
Corrosion resistant and non metallic cover
No wire looping
Straight thru wiring
Visible contacts 2 pole double break
No drift pressure settings
Captive cover screw
Ample wiring room
Ground screws
Easy to adjust
Stainless steel connection is optional
Other connection fittings are optional
Technical Data of PS04-W Water Pressure Switch
Model | Min On (Cut-In)PSI | Max Off (Cut-Out) PSI | Differential PSI | Factory Setting PSI | Electrical | Pipe Fittings | Contact Arrangement | |
120VAC | 240VAC | |||||||
PS04-W1 | 15 | 80 | 15-30 | 20-35 | 20A | 12A | 1/4" Male or Female NPT | NC |
PS04-W2 | 30 | 100 | 20-35 | 30-50 | 20A | 12A | 1/4" Male or Female NPT | NC |
PS04-WS3 | 35 | 150 | 30-40 | 85-115 | 20A | 12A | 1/4" Male or Female NPT | NC |
Note: 1Kgf/cm2 = 14.2PSI, 1bar = 14.5PSI
Model | Max On (Cut-in) PSI | Min Off (Cut-In) PSI | Differential PSI | Factory Setting | Electrical | Pipe Fittings | Contact Arrangement | |
120VAC | 240VAC | |||||||
PS04-WR1 | 80 | 15 | 15-30 | 35-20 | 20A | 12A | 1/4" Male or Female NPT | NO |
PS04-WR2 | 100 | 30 | 25-35 | 50-30 | 20A | 12A | 1/4" Male or Female NPT | NO |
PS04-WR3 | 150 | 35 | 30-40 | 115-85 | 20A | 12A | 1/4" Male or Female NPT | NO |

- PA03 Air Pressure Switch The air pressure switch (25-175 PSI) is used to regulate the tank pressure between two preset values on small (up to 175psi) electrically driven air

- PL02 Pressure Switch (5-1000 mbar) The pressure switch is designed as an economical interface between pressure systems and Printed Circuit Boards. This Pressure switch can be used as a

- PL03 Vacuum Pressure Switch (10-800 mbar) The vacuum pressure switch is applied to detection of both negative and positive pressure, such as the family vacuum cleaner. PL03 vacuum pressure sw

- PL07 Pressure Switches (20-2500Pa) The pressure switches are capable to sense tiny pressure change and widely used to control the flue of aerator, to monitor fan and air conditioner. P

- PL06 Pressure Switch (15-2500mbar) The pressure switch can be applied to detection positive or negative pressure. It can be used as a gauge or differential pressure switch with almost


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