Viair Corporation
Viair Corporation 90118 Pressure Switch with Relay 12V 1/8 NPT 165 PSI On
A 12 V pressure switch with integrated relay activates at 165 PSI and fits 1/8 NPT ports
- 12 V relay protects compressor from overload
- 165 PSI activation point suits high-pressure systems
- 1/8 NPT male port fits standard air lines
- California Prop 65 warnings listed for informed handling
- New Viair component ensures reliable pressure control
12 V Pressure Switch with Relay
The Viair 90118 is a pressure switch and relay assembly designed for 12 V air compressor systems. It suits installers and vehicle owners who need automatic on-off control of a single compressor.
1/8 NPT Port and 165 PSI Activation
The switch features a 1/8 NPT male port for direct plumbing into the air system. It activates the compressor at 165 PSI, making it the correct replacement only for systems calibrated to that cut-in pressure.
Low-Current 12 V Operation
The unit draws minimal current from the vehicle 12 V supply to drive its internal relay. Normal operation adds negligible electrical load and produces no audible noise beyond the compressor it controls.
Highlights
- 12 V relay protects compressor from overload
- 165 PSI activation point suits high-pressure systems
- 1/8 NPT male port fits standard air lines
- California Prop 65 warnings listed for informed handling
- New Viair component ensures reliable pressure control
Specifications
| Brand | VIAIR |
|---|
Questions about this item
What does the 165 PSI On rating mean when the switch is installed in my air system?
The switch closes its contacts and activates the compressor when tank pressure drops to 165 PSI, then opens again once pressure rises above that point.
How does the 1/8 NPT male port connect to my existing fittings?
The 1/8 NPT male thread screws directly into a matching female port on the tank or manifold; use thread sealant for a leak-free seal.
What voltage supply does the integrated relay require?
The relay is designed for 12 V DC only, so it must be wired to a 12 V power source with an appropriate fuse.
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