The Castair 8TT150N is the standard 8-gallon twin tank air receiver rated to 150 PSI. This is the base receiver in the 8TT series — no kit accessories, no gas or electric designation, just the tank itself. It sits on the bench or frame, accepts a pump and motor assembly, and holds air. That's the job.
Specs are straightforward and confirmed from the Castair product line: 8-gallon total capacity across two tanks, 17x34" overall footprint, 9x24" top plate for pump/motor mounting, 150 PSI maximum working pressure, 68 lbs empty. Non-code (non-ASME) receiver, which is standard for portable and contractor-class equipment. If you need an ASME-coded tank, confirm your requirements — that is a different product category.
Twin tank versus single tank matters in practice. Two tanks at the same total volume give you a lower profile and a wider, more stable base for a portable compressor. The distributed weight also tends to sit better on a wheeled frame than a single upright tank of equivalent capacity. For an 8-gallon portable, the twin configuration is the right choice for most shop and field applications.
Key Features
- Twin tank configuration: 8-gallon total capacity across two tanks — lower center of gravity and better stability on portable frames versus a single upright tank
- 150 PSI maximum working pressure: Standard pressure rating for shop air tools — impacts, ratchets, tire inflation, blow guns, air chisels, sandblasters at moderate duty
- 17x34" footprint: Confirmed dimensions — plan your frame, cart, or mounting accordingly; no guessing on fitment
- 9x24" top plate: Mounting surface for pump and motor assembly — sized for standard Castair and compatible pump/motor packages
- Non-code (non-ASME) receiver: Portable and contractor-class certification — correct for the vast majority of shop, field, and mobile compressor applications
- Cast iron construction: Castair builds with cast iron — heavier than steel sheet, longer service life, resistant to the vibration and thermal cycling that portable compressors produce over years of use
- 68 lb empty weight: One person can move it with care; two people move it easily
- Minnesota manufactured: Castair is a domestic manufacturer — custom builds available, direct support available
What's in the Box
- Castair 8TT150N twin tank air receiver assembly
- Tank only — pump, motor, wheels, axle, handle, vibration pads, and belt guard are not included in this SKU
- For the complete kit with mobility accessories included, see the 8TT150NC ($329.41 — saves approximately 15% vs. components separately)
Available Configurations
- 8TT150N (this unit) — Tank receiver only: 8-gallon twin tank, 150 PSI, base configuration. Contact us for current pricing.
- 8TT150G — Gas designation: Same core tank, gas-engine build designation. Contact us for current pricing.
- 8TT150NC — Complete portable kit: 8TT150N tank plus wheels, axle, handle, vibration pads, and belt guard. $329.41. Approximately 15% savings vs. individual components.
When Does a Shop Need This vs. Stepping Up or Down
- You need the 8TT150N if: You are replacing a worn or damaged tank on an existing Castair or compatible portable compressor, or you are building a new compressor from components and already have or are sourcing the mobility hardware separately.
- Choose the 8TT150NC instead if: You do not already have wheels, axle, handle, and vibration pads — the complete kit is about 15% less than buying those parts separately and saves you a sourcing step.
- Step up if: You need ASME certification for a regulated or inspected installation, or you need more than 8 gallons of capacity for sustained high-demand tool use.
- Step down if: Your application is truly light-duty and a smaller single-tank receiver would meet your needs at lower cost and weight.
Technical Specifications
- Part Number: 8TT150N
- 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
- Manufacturer: Castair (Cast Air Manufacturing), Minnesota
Why Buy From Air Compressor Factory Direct?
We have been supplying Castair equipment since 2016 and carry the full twin tank receiver lineup. If you are replacing a tank, we can help confirm fitment before you order. If you are building from scratch, we can tell you what pump and motor packages are compatible with this receiver. Free shipping on qualifying orders, full manufacturer warranty, and a team that answers the phone when you call. We do not guess on specs — we have the data.
Call 866-217-0063 for quick answers and help!
