Viair EF 400P 40143 12V Portable Compressor
The Viair EF 400P 40143 is a portable 12V inflation setup with a 25-foot air hose and a 6-foot power cord. Its duty-cycle rating changes with pressure, making the intended operating pressure an important part of choosing it for tire inflation.
Specifications and included details
- 150 PSI maximum working pressure; 100% duty cycle at 40 PSI and 33% at 100 PSI.
- 12V electrical system, specified at 13.8V supply; maximum draw 30 A.
- 2-pin SAE power connection with 40 A inline fuse holder; 100 PSI inline gauge.
- 25-foot air hose, 6-foot cord, inflation tips and Presta valve adapter.
Before ordering
Check power-connection suitability and circuit capacity before ordering. The compressor pressure maximum and gauge scale are different specifications. Follow the manual's duty-cycle and cooling instructions at the pressure you actually use.
Product questions and answers
Does 100% duty cycle apply at 100 PSI?
No. The EF 400P is listed at 100% duty cycle at 40 PSI and 33% at 100 PSI. Higher-pressure use requires attention to the appropriate running and cooling schedule.
Does a 150 PSI compressor maximum mean the gauge reads 150 PSI?
No. This setup lists a 100 PSI inline gauge. Do not assume the gauge scale equals the compressor's maximum working pressure.
Is the 40 A fuse the normal current draw?
No. The listed maximum compressor draw is 30 A; the 40 A figure identifies the inline fuse holder specification. Confirm the complete power setup against the manual.
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