VIAIR 450P Automatic Function Portable Compressor

by Viair

Product Features

• The only 100% duty cycle portable compressor on the market. Usable for virtually all tire sizes
• Quick connect inflation hose with tire inflation gun and rubber over mold pressure gauge
• Reads pressure on the fly with easy-to-use tire inflation gun, and includes an automatic shutoff function that powers down the unit when the compressor is turned on, but not actively filling tires
• Direct heavy-duty dual battery clamps with 40-amp inline fuse
• Includes deluxe carry bag anti-vibration tray and more

Product Details

View Installation Manual [PDF]

• Product Dimensions: 12.5 x 6 x 7.2 inches ; 12.7 pounds
• Shipping Weight: 18.1 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
• ASIN: B000X9EGFS
• Item model number: 45043
• Average Customer Review: 4.9 out of 5 stars  See all reviews (12 customer reviews)
• Amazon Best Sellers Rank: #13,397 in Automotive (See Top 100 in Automotive)
  • #31 in Automotive > Tools & Equipment > Tire Air Compressors & Inflators

Product Description

Amazon.com Product Description

The 450P Automatic is VIAIR's first Automatic shutoff function portable compressor and is rated for use with most any size tire. Powered by an easy-to-establish temporary connection to a 12-volt battery power source, this 100% duty cycle unit is capable of pressures up to 150 PSI continuously without the need to be rested. The 450P Automatic comes with a range of accessories stowable in its soft carry case, including a convenient close-ended gas station-style air gun. Portable Auto Compression at 150 PSI with a 100% Duty Cycle The VIAIR 450P-Automatic Portable Compressor offers inflation of virtually any size tire, and operation at up to 150 PSI without the need to rest the unit. More than just a compressor, the 450P is a complete portable compression system, coming complete with an inflation gun with 200 PSI air pressure gauge, a 25' extension hose with quick connect coupler and lever chuck, a heavy duty sand tray with vibration isolators, a 8' power cable, a heavy-duty sand tray with vibration isolators, a 3-piece inflation tips kit, an inline fuse holder, a deluxe zippered carry bag and dual heavy duty direct battery clamps. The convenient battery clamps allow you to quickly utilize any 12-volt power source, including your own vehicle's battery, to address your air compression needs in seconds. Portable automatic air compression up to 150 PSI suitable for 37" tires and larger. View larger. All your compression needs are in the bag. View larger. Heavy duty tray included for vibration control. View larger. The 450P also contains a convenient automatic time and power-saving features. The unit comes with an automatic shutoff function that will power down the 450P when the compressor is turned on, but not actively filling tires - making it unnecessary to turn the unit off between tire fills. In addition, the included closed-ended tire inflation gun allows for on-the-fly tire pressure reading, without having to turn the unit off to check tire pressure. 450P Air Compressor Specifications Motor voltage - 12 volt Motor type - Permanent magnetic Max. duty cycle: 100% @ 100 PSI Max. working pressure - 150 PSI Max. Amp draw - 20 Amps Max. ambient temperature - 158°F Min. ambient temperature - -40°F CFM @ 0 PSI - 1.66 CFM @ 100 PSI: 0.94 Built-in pressure switch - 120 PSI on, 145 PSI off Fuse - 30 Amps Auto. Reset thermal protection - Yes Dimensions - 12.75"L x 4.00"W x 7.00"H Net weight - 9.75 lbs About Compressor Duty Cycle Compressor duty cycle refers to amount of time a compressor can be operated in a given time period, at 100 PSI and at a standard ambient temperature of 72°F. Duty Cycle is commonly expressed in percentile as: compressor on time (compressor on time + off time) %. As an example, a compressor that is rated for 25% duty cycle means that compressor can be operated at: 100 PSI @ 72°F for 10 minutes on and 30 minutes off. 10 min. on / (10 min. on + 30 Min. off) = 10 min. / 40 Min = 25% duty cycle. Fill Rates:   31" x 10.5" 33" x 12.5" 35" x 12.5" 37" x 12.5" 0 - 30 PSI 4 min. 05 sec. 5 min. 30 sec 6 min. 55 sec. 7 min. 56 sec. 15 - 30 PSI 2 min. 10 sec. 2 min. 50 sec. 3 min. 30 sec. 4 min. 09 sec. What's in the Box 1-VIAIR 450P portable air compressor 1-Deluxe zippered carry bag with storage compartments 1-Gas station style inflation gun with 200 PSI air pressure gauge 1-25' extension hose with quick connect coupler and lever chuck 1-Heavy duty sand tray with vibration isolators 1-Set of dual heavy duty direct battery clamps 1-8' power cable 1-3 piece inflation tips kit 1-Inline fuse holder 1-Owner's manual 1-Year Limited Warranty VIAIR Corporation warrants this product, when properly installed and under normal conditions of use, to be free from defects in workmanship and materials for a period of one (1) year from its original date of purchase. This warranty covers product defects only. It does not cover incidental or consequential damages as a result of misuse or abuse. About VIAIR Corporation VIAIR offers the most complete line of air compressors and air accessories for both the on-and off-road markets available anywhere. VIAIR products are used in the OEM segment, 4x4 and Sport Air Suspension and have become the industry standard for both 12- and 24-volt automotive applications worldwide. Their compressors are currently being used in every corner of the globe, in the harshest climates imaginable and the company is recognized by its customers and peers alike as the leading manufacturer of high performance air compressors for mobile pneumatic applications.

Product Description

The VIAIR 450P Automatic Function Portable Air Compressor is the only 100-percent duty cycle portable compressor on the market, and can run for extended periods of time depending on your environment. Its automatic pressure regulation system is designed to maintain an internal tank pressure of 145 PSI by cycling power to the compressor motor. This compressor is also equipped with a detachable gas-station-style inflation gun, which allows you to easily fill tires with a simple squeeze of the handle. This inflation gun can also show current tire pressure, so you don't need an additional pressure gauge.

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Customer Reviews

Most Helpful Customer Reviews

13 of 13 people found the following review helpful:

5.0 out of 5 stars Portable, fast source for compressed air., December 10, 2009

By 

Patrick V. Humphries - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: VIAIR 450P Automatic Function Portable Compressor (Automotive)

I have an Airstream trailer in storage and the tires were a bit low. Foot pumps were tried to keep the pressure up, but they were useless. This pump, with its start-up at 120psi and shut-off at 145psi is just like having a compressed air tank. The hose is long enough to reach both sides of a 30' trailer without relocating the compressor. The valve clamp is metal and connects securely. The gauge and hand control are easy to read and operate. It was so fast taking the air pressure from 15psi to the 60psi that it was almost embarrassing. The process of filling four tires, including cool-down, was only 15 minutes.

8 of 8 people found the following review helpful:

5.0 out of 5 stars impressive portable compressor, October 15, 2009

By 

R. Windsor (Glen Burnie, MD United States) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: VIAIR 450P Automatic Function Portable Compressor (Automotive)

I use this compressor everytime I go camping. Last weekend I aired up 2 air bags on my pickup and notice both rear tires where down about 10 psi. This compressor did both tires and both air bags in about 5 minutes and compressor was barely warm. It is expensive, but you get what you pay for.

10 of 11 people found the following review helpful:

5.0 out of 5 stars Best little portable 12v compressor out there, August 31, 2009

By 

John Russo (Toms River, NJ) - See all my reviews
(REAL NAME)   

This review is from: VIAIR 450P Automatic Function Portable Compressor (Automotive)

I purchased this product a couple of weeks ago to "air-up" the tires on my FJ Curiser after wheeling on the beach. I have tried other units over the past 20 years or so and they never really did the job, but this one performed better than I could have hoped. I was able to "air-up" all 4 tires from 18lbs to 35lbs in about 15 minutes.

I was very pleased with the quick connect inflation hose, with tire inflation gun and the rubber over mold pressure gauge. They all worked very well and easy to monitor prersure while filling. The compressor itself appreas to be very well made and heavy duty and very easy to set up, use and put away - the hardest part was opening the hood of my truck to get to the battery.

I highly recomend this product and the seller, Central 4 Wheel Drive. The item shipped fast and was packed up very well.