Viair Corporation
Viair Corporation 90104 Pressure Switch 140 PSI
A 140 PSI pressure switch with 1/8" M NPT port and 1/4" spade connectors for air compressor control
- 1/8" M NPT port fits standard air lines
- 1/4" spade connectors enable quick wiring
- 140 PSI setting controls compressor cut-out
- Viair 90104 model ensures direct-fit replacement
- New condition guarantees reliable out-of-box operation
Purpose & Fit
The Viair 90104 is a 140 PSI pressure switch designed for air compressor systems. It suits installers who need a direct replacement or a new build component with a 1/8 inch male NPT port. The 1/4 inch spade connectors allow quick electrical hookup without soldering. Buyers who need a different pressure rating or thread size should look elsewhere.
Connections & Compliance
The 1/8 inch male NPT port threads into standard compressor tanks or manifolds. The 1/4 inch spade terminals accept common push-on connectors for power and ground leads. A California Proposition 65 notice applies because the product contains a chemical identified by the state as a cancer and reproductive hazard. No additional hardware or software is bundled with the switch.
Decisive Specification
The 140 PSI actuation pressure is the single figure that determines whether this switch matches your system. If your compressor cut-out setting is 140 PSI, the part is compatible; if the system requires a higher or lower setting, this unit will not function correctly. Verify the required pressure before ordering.
Highlights
- 1/8" M NPT port fits standard air lines
- 1/4" spade connectors enable quick wiring
- 140 PSI setting controls compressor cut-out
- Viair 90104 model ensures direct-fit replacement
- New condition guarantees reliable out-of-box operation
Specifications
| Brand | VIAIR |
|---|
Questions about this item
When will the 140 PSI pressure switch need replacement?
The switch has no published service interval; replace it if the 1/8" M NPT port leaks or the 1/4" spade terminals corrode.
What limits continuous operation of this 140 PSI switch?
The 140 PSI cut-out pressure is the hard limit; sustained cycling at that set-point will wear the contacts fastest.
Does the switch generate noticeable heat or noise during all-day cycling?
The switch itself is silent and produces negligible heat; any noise or warmth comes from the compressor it controls.
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