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4.96/5 Rating (48 Reviews)
BelAire 3112D duplex two-stage air compressor on a 120 gallon horizontal tank

BelAire 3112D Duplex Two-Stage Air Compressor 2 x 5 HP 120 Gallon Horizontal 1-Phase

by BelAire
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$8,499.99
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4.96/5 store rating · 48 Access Division customer reviewsNo reviews for this product yet · Be the first to review it
  • 2 x 5 HP duplex, 37.2 cfm @ 100 psi
  • Alternator with built-in backup pump
  • 120 gal ASME tank, 175 psi, 208-230V single phase
Zed Valenzuela, product expert at Access Division

Zed Valenzuela · Product Expert

Questions on specs, fit or install? Ask before you buy.

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SKU IMC3112D
Availability:
in stock, ready to be shipped
Description

Two-Stage Electric Duplex Air Compressor, 2 x 5 HP on a 120 Gal Horizontal Tank, Single Phase

When your only compressor goes down, the whole shop stops. No air means no impact guns and no tire work.

The BelAire 3112D is a duplex compressor with two 5 HP pumps and motors on one 120 gal tank. Together they deliver 37.2 cfm at 100 psi on 208-230V single phase.

Why Choose the 3112D

Two complete pumps and motors on one tank, so one can carry the shop if the other is down.

  • 37.2 cfm at 100 psi — 33.2 cfm at the full 175 psi
  • Alternator — switches the lead pump to spread run time evenly
  • Single phase 208-230V — duplex air without three-phase service
  • 120 gal ASME tank — with ASME safety valves

Made For

Built for shops where air can't stop.

  • Auto repair shops
  • Tire shops
  • Body and collision shops
  • Fleet maintenance garages
  • Shops on single-phase power that need backup air

Features

  • 2 x 5 HP two-stage pumps — two pumps and two motors on one tank
  • 37.2 cfm @ 100 psi — 33.2 cfm @ 175 psi
  • 175 psi max pressure — headroom for tire and heavy impact work
  • 120 gal horizontal ASME tank — with ASME safety valves
  • Alternator — balances run time between both pumps
  • Dual pressure switch control — start-stop operation
  • Magnetic motor starters — protect both motors
  • Fully enclosed belt guards — 1 in tank discharge valve

Two Pumps, One Tank

The duplex setup runs two complete pumps and motors on a shared 120 gal tank. The alternator switches which pump leads, so both get equal run time and wear.

If one pump is down for service, the other is still a full working compressor. The shop keeps its air while you fix it.

Single Phase Power and Simple Control

The 3112D runs on 208-230V single phase, the service most small shops already have. A start-stop dual pressure switch and magnetic starters handle control.

Overall size is 77 × 27 × 56 in on a horizontal tank, with a 1 in tank discharge valve for your main air line.

The Right Air Compressor for Your Shop

The 3112D gives you 2 x 5 HP, 37.2 cfm at 100 psi and a 120 gal tank on single phase power, with a built-in backup pump.

Don't wait — scroll back up and click the orange Add to Cart button to get this air compressor on its way to your shop.

Specs

Technical Specifications

Model 3112D
Brand BelAire
Configuration Electric duplex, two-stage
Motor Power 2 x 5 HP
Air Delivery @ 100 psi 37.2 cfm
Air Delivery @ 175 psi 33.2 cfm
Max Pressure 175 psi
Electrical 208-230V, 1-phase
Tank 120 gal horizontal, ASME
Control Start-stop dual pressure switch, alternator, magnetic starters
Tank Discharge Valve 1 in
Dimensions (L × W × H) 77 × 27 × 56 in
Shipping Weight 778 lb
Delivery & Returns

Shipping

Shipping is free unless the page says otherwise. Some brands also offer free pickup

Forklift required — Some products need a forklift at the delivery address to unload. If you don't have one, we'll ship to a local freight terminal near you for pick-up instead. We'll confirm the location with you before processing the order.

Scheduled delivery — Most large products ship via freight carrier. The freight company will contact you to schedule a delivery window. An adult must be present to receive and sign for the shipment. Inspect all items for damage before signing.

Flatbed freight — Some large or heavy products require flatbed freight shipping. Flatbed shipping is not included in the price. After you place your order, we'll contact you with the shipping cost before processing it. You can cancel the order free of charge at any point before you've confirmed the delivery time and shipping cost — a full refund will be issued.

For full details, see our Shipping Policy.

Returns

30-day return window — You have 30 days from the date of delivery to initiate a return. The item must be in its original condition, including packaging and all included components.

Refund details — Once we receive and verify the return, a refund will be processed to your original payment method. The refund amount reflects deductions for the restocking fee, return shipping, original shipping costs, and transaction fees.

Non-returnable products — Custom or made-to-order products cannot be returned. The same applies to any product marked with "No Returns" on the product page.

Read our full Refund Policy.

Reviews


California Residents Only — Warning: Cancer and Reproductive Harm — www.P65Warnings.ca.gov

Description

Two-Stage Electric Duplex Air Compressor, 2 x 5 HP on a 120 Gal Horizontal Tank, Single Phase

When your only compressor goes down, the whole shop stops. No air means no impact guns and no tire work.

The BelAire 3112D is a duplex compressor with two 5 HP pumps and motors on one 120 gal tank. Together they deliver 37.2 cfm at 100 psi on 208-230V single phase.

Why Choose the 3112D

Two complete pumps and motors on one tank, so one can carry the shop if the other is down.

  • 37.2 cfm at 100 psi — 33.2 cfm at the full 175 psi
  • Alternator — switches the lead pump to spread run time evenly
  • Single phase 208-230V — duplex air without three-phase service
  • 120 gal ASME tank — with ASME safety valves

Made For

Built for shops where air can't stop.

  • Auto repair shops
  • Tire shops
  • Body and collision shops
  • Fleet maintenance garages
  • Shops on single-phase power that need backup air

Features

  • 2 x 5 HP two-stage pumps — two pumps and two motors on one tank
  • 37.2 cfm @ 100 psi — 33.2 cfm @ 175 psi
  • 175 psi max pressure — headroom for tire and heavy impact work
  • 120 gal horizontal ASME tank — with ASME safety valves
  • Alternator — balances run time between both pumps
  • Dual pressure switch control — start-stop operation
  • Magnetic motor starters — protect both motors
  • Fully enclosed belt guards — 1 in tank discharge valve

Two Pumps, One Tank

The duplex setup runs two complete pumps and motors on a shared 120 gal tank. The alternator switches which pump leads, so both get equal run time and wear.

If one pump is down for service, the other is still a full working compressor. The shop keeps its air while you fix it.

Single Phase Power and Simple Control

The 3112D runs on 208-230V single phase, the service most small shops already have. A start-stop dual pressure switch and magnetic starters handle control.

Overall size is 77 × 27 × 56 in on a horizontal tank, with a 1 in tank discharge valve for your main air line.

The Right Air Compressor for Your Shop

The 3112D gives you 2 x 5 HP, 37.2 cfm at 100 psi and a 120 gal tank on single phase power, with a built-in backup pump.

Don't wait — scroll back up and click the orange Add to Cart button to get this air compressor on its way to your shop.

Specs

Technical Specifications

Model 3112D
Brand BelAire
Configuration Electric duplex, two-stage
Motor Power 2 x 5 HP
Air Delivery @ 100 psi 37.2 cfm
Air Delivery @ 175 psi 33.2 cfm
Max Pressure 175 psi
Electrical 208-230V, 1-phase
Tank 120 gal horizontal, ASME
Control Start-stop dual pressure switch, alternator, magnetic starters
Tank Discharge Valve 1 in
Dimensions (L × W × H) 77 × 27 × 56 in
Shipping Weight 778 lb
Delivery & Returns

Shipping

Shipping is free unless the page says otherwise. Some brands also offer free pickup

Forklift required — Some products need a forklift at the delivery address to unload. If you don't have one, we'll ship to a local freight terminal near you for pick-up instead. We'll confirm the location with you before processing the order.

Scheduled delivery — Most large products ship via freight carrier. The freight company will contact you to schedule a delivery window. An adult must be present to receive and sign for the shipment. Inspect all items for damage before signing.

Flatbed freight — Some large or heavy products require flatbed freight shipping. Flatbed shipping is not included in the price. After you place your order, we'll contact you with the shipping cost before processing it. You can cancel the order free of charge at any point before you've confirmed the delivery time and shipping cost — a full refund will be issued.

For full details, see our Shipping Policy.

Returns

30-day return window — You have 30 days from the date of delivery to initiate a return. The item must be in its original condition, including packaging and all included components.

Refund details — Once we receive and verify the return, a refund will be processed to your original payment method. The refund amount reflects deductions for the restocking fee, return shipping, original shipping costs, and transaction fees.

Non-returnable products — Custom or made-to-order products cannot be returned. The same applies to any product marked with "No Returns" on the product page.

Read our full Refund Policy.

Reviews