How do I size an industrial air compressor?

Size a compressor by the total CFM (cubic feet per minute) your tools and equipment require at their operating PSI, then add roughly 30% headroom for future growth and to avoid running the unit at 100% duty. Add the CFM of every tool that may run simultaneously, match the required pressure (most shop applications run 90-125 PSI), and confirm your available electrical supply (voltage and phase). A1 Compressor Warehouse offers free sizing support to match the right compressor to your application.

What is the difference between oil-free and oil-lubricated air compressors?

Oil-lubricated compressors use oil to lubricate and seal the compression element, offering long life and lower cost for general industrial use, but they require oil changes and can carry trace oil into the air. Oil-free compressors deliver Class 0 air with no oil in the airstream, which is essential for medical, dental, food, electronics, and pharmaceutical applications where any oil contamination is unacceptable. Anest Iwata oil-free scroll compressors are a common choice for these clean-air needs.

What size air compressor do I need for air tools?

Check the CFM requirement for each air tool and add the CFM of all tools that will run at once, then add about 30% headroom. Light tools like impact wrenches need 3-5 CFM, while continuous-demand tools like sanders or grinders can need 8-12 CFM or more. For most professional shops a two-stage compressor in the 5-10 HP range covers a single-bay operation; larger shops and production lines typically move to rotary screw compressors for continuous duty.

Is A1 Compressor Warehouse an authorized dealer?

Yes. A1 Compressor Warehouse is an authorized dealer for Atlas Copco, Anest Iwata, Mattei, Schulz, and EL-AV. Every product ships with genuine OEM parts and full manufacturer warranty. We serve customers nationwide with fast US shipping and provide service in the Carolinas.

What is the difference between a rotary screw and a reciprocating air compressor?

Reciprocating (piston) compressors are ideal for intermittent use and lower-duty applications, delivering high pressure at a lower upfront cost. Rotary screw compressors are built for continuous duty, running cooler and quieter with steadier air delivery, which makes them the standard for shops and plants that use air throughout the day. Variable-speed (VSD) rotary screw models further cut energy costs by matching output to demand.

Do air compressors come with a warranty and shipping?

Yes. All compressors sold by A1 Compressor Warehouse include the full manufacturer warranty and genuine OEM parts. We ship nationwide across the United States, offer same-day quotes, and provide expert sizing support to help you select the right unit before you buy.

Anest Iwata Spray Gun Regulators & Pressure Gauges

Name: A1 Compressor Warehouse
Address: Clover, SC, US
Telephone: (803) 526-5797

Precise air and fluid pressure is what separates a consistent finish from an expensive re-do. This collection brings together every Anest Iwata regulator and pressure gauge we stock — the parts that let you dial in a spray gun, pressure pot or pump and hold that setting all shift.

What's here

Air regulators — gun-mounted and inline sets that stabilise inlet pressure so atomisation stays even as line pressure fluctuates.
Paint & fluid regulators — PR-5 series and high-pressure fluid regulator kits for pressure-feed and circulating systems.
Pot and pump regulators — including MRP-2100 pneumatic regulators and PET-10 regulator sets.
Replacement pressure gauges — 100 PSI gun gauges, inner pressure gauges for WIDER series guns, and gauges matched to specific regulator bodies.

Getting the right part

Regulators and gauges are model-specific: a gauge for a PR5-BN will not seat correctly on a different regulator body, and thread sizes vary across the range. If you can tell us your gun or pump model — or the part number stamped on the old component — we will confirm the correct replacement before you order.

Not sure what you need? Call (803) 526-5797 or request a quote and we will match it from the Anest Iwata parts catalogue. We are an authorised Anest Iwata dealer and ship nationwide, with in-stock orders leaving within 24 hours.

Browse the full spray gun range, other Anest Iwata spray gun parts, or everything from Anest Iwata.