Viair EF 450P Automatic 45144 12V Compressor
The Viair EF 450P Automatic 45144 pairs a portable 12V compressor with a 30-foot hose and a tire inflation gun. Its 100% duty-cycle specification is stated at 100 PSI, so compare that operating condition with your inflation task rather than relying on the percentage alone.
Specifications and included details
- 150 PSI maximum working pressure; 100% duty cycle at 100 PSI.
- 12V system specified at 13.8V supply, with maximum draw of 23 A.
- 6-foot power cord and 2-pin SAE connection with 40 A inline fuse holder.
- 30-foot quick-connect hose, inflation gun with 160 PSI gauge, tips and Presta valve adapter.
Before ordering
Match the power connection and circuit capacity to the operating manual. Hose length helps with vehicle access but does not establish universal tire coverage or fill time. Observe the pressure limit and duty-cycle conditions even though the gauge scale extends to 160 PSI.
Product questions and answers
Is this rated for 100% duty cycle at 150 PSI?
The stated 100% duty cycle applies at 100 PSI. The separate 150 PSI maximum pressure does not establish continuous operation at that pressure.
Can the compressor supply 160 PSI because the gauge reads that high?
No. The gauge scale is 160 PSI, while maximum working pressure is listed as 150 PSI. A gauge scale does not increase the compressor's operating limit.
What should I check on the electrical supply?
Confirm a suitable 12V connection, circuit capacity for the listed 23 A maximum draw and the manufacturer's fuse and cable requirements. The 40 A fuse specification is not normal current consumption.
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