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 Rating | 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 PSI | Electrical Rating | 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 |




Company Brief : Qiangli Industrial Co., Ltd. is a manufacturer of air pressure switches, water pressure switches, differential pressure switches and pressure control devices with high performance and reliability. Our pressure switches have set the standards for accuracy, quality, and dependability in industry...