The Castair 8TT150G is an 8-gallon twin tank air receiver rated to 150 PSI, built for gas-powered compressor setups. If you are mounting a gas engine and pump to a portable frame for outdoor or field use, this is the tank that goes with it. It is the same core receiver as the 8TT150N — same 8-gallon capacity, same 17x34" footprint, same 9x24" top plate — built to accept a pump/motor assembly and shipped as the tank component for gas-powered builds.
At 68 lbs empty and a 17x34" footprint, this receiver is genuinely portable. It is not a fixed-installation tank. The twin tank configuration gives you more air reserve than a single tank in the same footprint, which matters when you are running impact wrenches, air ratchets, or inflation equipment from a gas-powered compressor on a job site where you cannot just plug in and let a pressure switch handle everything quietly.
This is a non-code (non-ASME) air receiver. Non-code tanks are standard for portable and contractor use. If your application requires an ASME-coded vessel — certain jurisdictions, regulated environments, or inspection requirements — confirm your local requirements before ordering.
Key Features
- Twin tank design: 8-gallon total capacity across two tanks — more air reserve than a single tank of equivalent size, less compressor cycling under sustained tool demand
- 150 PSI maximum working pressure: Handles the full range of standard air tools — impacts, ratchets, tire inflation, blow guns, air-powered cleaning equipment
- Gas designation: Configured and sold as the tank receiver for gas-engine compressor builds — designed for outdoor and job site use where electrical service is not available
- 17x34" footprint, 9x24" top plate: Sized to accept standard portable pump/motor assemblies — confirmed fitment dimensions for planning your build or replacement
- Non-code receiver: Standard portable/contractor-class certification — appropriate for field, shop, and mobile compressor applications outside regulated fixed-installation environments
- Cast iron construction: Castair builds with cast iron throughout — durable, slow-wear, meant for commercial service life rather than consumer-grade replacement cycles
- 68 lb empty weight: Heavy enough to be stable under load, light enough to move with one or two people
- Minnesota manufacturing: Castair is a domestic manufacturer based in Minnesota — not an imported OEM rebrand
What's in the Box
- Castair 8TT150G twin tank air receiver (tank assembly only)
- This SKU ships as the tank component — pump, motor, engine, wheels, handle, and accessories are separate or included in kit configurations
- Confirm included hardware with your order — contact us if you need a complete kit or specific accessories
Available Configurations
- 8TT150G (this unit) — Tank receiver only: 8-gallon twin tank, 150 PSI, gas-powered build designation. Contact us for current pricing.
- 8TT150N — Standard tank receiver: Same core tank, same dimensions and specs, base designation. Contact us for current pricing.
- 8TT150NC — Complete portable kit: Includes the 8TT150N tank plus wheels, axle, handle, vibration pads, and belt guard. $329.41. Saves approximately 15% vs. sourcing components individually.
When Does a Shop Need This vs. Stepping Up or Down
- You need this tank if: You are building or rebuilding a portable gas-powered compressor and need a replacement receiver, or you are sourcing components for a custom gas compressor build and need a 150 PSI twin tank in this footprint.
- Consider the 8TT150NC complete kit instead if: You want wheels, a handle, vibration pads, and a belt guard included — the kit saves about 15% versus buying those components separately and simplifies the build.
- Step up if: Your application requires an ASME-coded receiver (regulated environments, fixed installation with inspection requirements), or you need higher capacity than 8 gallons for sustained high-CFM tool use.
- Step down if: You are running a small stationary electric shop compressor and do not need the gas designation — the 8TT150N is the same tank without the gas-build specifics.
Technical Specifications
- Part Number: 8TT150G
- Tank Capacity: 8 gallons (twin tank configuration)
- Maximum Working Pressure: 150 PSI
- Tank Footprint: 17" x 34"
- Top Plate: 9" x 24"
- Empty Weight: 68 lbs
- Code Rating: Non-Code (non-ASME) air receiver
- Power Source: Gas-engine designation (tank component for gas compressor builds)
- Manufacturer: Castair (Cast Air Manufacturing), Minnesota
Why Buy From Air Compressor Factory Direct?
We have been selling Castair equipment since 2016. We stock the full Cast Air twin tank lineup and can help you confirm the right tank, kit, or complete compressor for your specific build or application. If you are replacing a tank on an existing compressor, we can help you verify fitment before you order. Free shipping on qualifying orders, full manufacturer warranty, and honest guidance on whether you need the tank only or the complete kit.
Call 866-217-0063 for quick answers and help!
