Castair 30 Gallon Horizontal Air Receiver Tank — 200 PSI (30GH200)
The Castair 30GH200 is a 30-gallon horizontal air receiver tank rated to 200 PSI maximum allowable working pressure (MAWP). Horizontal receivers are the right choice when floor space is limited but ceiling height is not. At 30 gallons and 200 PSI, this tank stores enough compressed air to buffer demand peaks in small shop systems while keeping pressure at tools consistent during compressor off-cycles. The 200 PSI rating gives you headroom above most shop compressor cut-out pressures (typically 125-175 PSI), which means the tank can be used with virtually any reciprocating compressor in this size class.
Manufacturer page data was not available for this listing. Specifications are drawn from the product name, part number, and standard air receiver specifications. Call 866-217-0063 to confirm dimensions and connection specs before ordering.
Why a Horizontal Receiver?
Horizontal vs. Vertical Receiver Tanks
- Horizontal layout: Lower profile — better suited for spaces with limited ceiling height, or when the tank needs to be mounted on a shelf, platform, or under a workbench
- Stability: Horizontal tanks have a lower center of gravity and do not require bracing or anchoring to the same degree as tall vertical tanks
- Compressor base mounting: Many horizontal receivers are designed to mount under a piston compressor pump/motor assembly, creating a compact horizontal compressor unit
- Vertical receivers: Take less floor space but require more ceiling height — better choice when floor space is the limiting factor
Why 200 PSI vs. 175 PSI?
- The 200 PSI MAWP rating of the 30GH200 is 25 PSI higher than the 30H175 version
- If your compressor cuts out at 175 PSI or higher, you need a 200 PSI rated tank — using a 175 PSI tank above its MAWP is a safety violation
- Many modern two-stage compressors cut out at 175 PSI; some reach 200 PSI — always match the tank to the compressor cut-out pressure plus a safety margin
- The 200 PSI rating also provides future flexibility if you upgrade your compressor
What a 30-Gallon Receiver Does for Your System
System Benefits
- Demand buffering: The tank stores compressed air during low-demand periods and releases it during peak demand — tools see consistent pressure instead of pressure drops when multiple users draw air simultaneously
- Compressor cycle reduction: A properly sized receiver allows the compressor to run in longer, more efficient cycles rather than short-cycling frequently, which extends motor and pump life
- Moisture separation: Compressed air cools in the tank, causing moisture to condense and fall to the bottom — this moisture must be drained regularly via the tank drain valve
- Pressure stabilization: Smooths out pressure pulsations from reciprocating pump action
Is 30 Gallons the Right Size for Your Shop?
- 30 gallons works well for: Single technician shops, light-duty intermittent use (impact wrench, tire inflation, blow gun), or as an auxiliary buffer tank on a larger system
- Consider a larger tank if: You are running multiple tools simultaneously, doing body work with sanders and spray equipment, or running a high-duty cycle air system
- General sizing guideline: 4-6 gallons of receiver per CFM of compressor output at minimum — a 5 CFM compressor works well with a 30-gallon tank; a 15 CFM compressor would benefit from an 80-gallon or larger receiver
Installation and Maintenance Notes
- ASME certification: Confirm the tank is ASME coded and stamped if your jurisdiction requires it for pressurized vessels — contact us for certification status
- Safety relief valve: A properly rated pressure relief valve must be installed on the receiver — confirm the valve rating matches the tank MAWP and compressor cut-out pressure
- Drain valve: Drain condensate from the tank drain valve daily in humid conditions, or at minimum weekly — condensate left in the tank accelerates internal corrosion
- Inspection: Inspect the tank exterior annually for corrosion, especially at the drain valve and port areas
What's in the Box
- 1x Castair 30-gallon horizontal air receiver tank, rated to 200 PSI
- Note: Safety relief valve, fittings, drain valve, and gauges may or may not be included — confirm with order. Most bare receivers ship without these accessories.
Technical Specifications
- Part Number: 30GH200
- Capacity: 30 gallons
- Orientation: Horizontal
- Maximum Allowable Working Pressure (MAWP): 200 PSI
- Manufacturer: Cast Air / Castair
- Price: $924.08
- Dimensions and port sizes: Contact 866-217-0063 for confirmed specs — manufacturer page data not available at time of listing
Why Buy From OEM Diagnostic Tools?
- Specialist since 2016 in air compressor systems and major components
- Free shipping on qualifying orders — we coordinate freight for large tanks
- Free tech support at 866-217-0063 — call to confirm dimensions, port connections, and ASME certification status before ordering
- Full manufacturer warranty on Cast Air receivers
- Honest guidance: If the 30H175 (175 PSI version) is appropriate for your compressor, we will tell you — if you need 200 PSI, we will make sure you get the right tank
Call 866-217-0063 for quick answers and help!
