The Castair 120V200 is a 120-gallon vertical ASME air receiver tank rated to 200 PSI. This is the large-capacity vertical storage tank in the Castair lineup — 30 inches in diameter, 45 inches tall, with a 17"x44" top plate for mounting a single compressor pump and motor assembly directly on the tank. Weight is 355 lbs empty, same as the 120-gallon horizontal version. If your shop has the ceiling height and wants to minimize floor footprint, the vertical configuration is the right choice.
Tank Specifications
- Capacity: 120 gallons
- Orientation: Vertical
- Tank Dimensions: 30" diameter x 45" height
- Top Plate Size: 17" x 44"
- Maximum Working Pressure: 200 PSI
- Weight: 355 lbs (empty)
- Construction: Power coded, ASME certified
- Part Number: 120V200
ASME Certification
All Castair tanks are ASME certified and power coded. Commercial and industrial air systems in shop environments require ASME-stamped pressure vessels for code compliance and insurance coverage. The Castair ASME stamp confirms the tank was manufactured, welded, and tested to the applicable ASME Boiler and Pressure Vessel Code standards for the rated working pressure.
Construction Details
- Powder coated exterior: Corrosion-resistant finish for shop environments
- 4-leg base: All vertical Castair tanks ship with four legs for stable floor mounting — do not skip vibration pad installation under each leg
- 17"x44" top plate: Provides mounting surface for a single compressor assembly — same top plate size as the horizontal 120H200
- Standard connection ports: Inlet, safety valve, drain, and gauge connections per ASME requirements
Vertical vs. Horizontal: The Space Trade-Off
- 120V200 (Vertical, $2,338.57): 30" diameter footprint — less floor space. Requires ceiling height for the 45" tank body plus the compressor height on top. Total installation height can be 7-8 feet depending on motor/pump configuration.
- 120H200 (Horizontal, $1,755.83): 24"W x 68"L footprint — larger floor area, lower ceiling requirement. About $583 less expensive. Better for low-ceiling spaces or multi-compressor manifold setups.
- 120HD200 (Horizontal Duplex, $2,305.53): Same tank body as 120H200 but with extended 17"x85" top plate for duplex installations.
The vertical 120V200 costs more than the horizontal because the leg fabrication and structural requirements for a vertical vessel are more involved. If cost is a factor and you have adequate floor space, the 120H200 delivers the same storage capacity at a lower price point.
What's in the Box
- 1x Castair 120-gallon vertical ASME air receiver tank, 200 PSI rated
- Four-leg base (integral)
- 17"x44" top plate (integral)
Note: Safety valve, pressure gauge, drain valve, and compressor components sold separately. Vibration pads (VP100) are recommended under all four legs.
When Does a Shop Need a 120-Gallon Vertical Tank
A 120-gallon vertical tank fits 7.5-15 HP compressor systems in shops that have moderate to high air demand and want the compressor to cycle on and off rather than run continuously. The 200 PSI rating works with industrial two-stage compressors that cut out at 175 PSI, giving you a 25 PSI differential as usable storage. Go vertical when floor space is tight but ceiling height is not a concern. The 30-inch diameter footprint fits in a corner or against a wall with minimal wasted space around it. If your ceiling is low — say, under 10 feet once the compressor is on top — consider the horizontal 120H200 instead.
Why Buy From Air Compressor Factory Direct?
We have been specializing in industrial air compressor systems and components since 2016. ASME tanks ship freight — we coordinate delivery and can help you make sure you have the right fittings, safety valves, and accessories on hand before the tank arrives. Free shipping, free technical support at 866-217-0063, and full manufacturer warranty on all Castair equipment.
Call 866-217-0063 for quick answers and help!
