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.

Atlas CopcoModel #: WEDA S30N

Atlas Copco WEDA S30N Submersible Sludge Pump

HP3–4CFM230–250 gpm

$3,370.00

SKU 3081620407

Downloads & Resources

Owner's Manual (PDF)

Financing available — learn more

Ships in 24 hrs
Authorized dealer
Service support

The Atlas Copco WEDA S30N handles thick, soft, wet mud and similarly viscous mixtures of liquids and solids. A vortex-type high-chrome impeller (55 HRC) clears large solids that would clog a standard drainage pump.

Key Features

High-chrome cast-iron vortex impeller (55 HRC) for large solids passage
Solids handling up to 2" — sludge and light slurry
Built-in starter and motor protection — plug and pump
Dry-running capability from a carefully sized, heat-dissipating motor
Double mechanical seal in an oil bath with robust o-ring design
External oil screws so preventive maintenance actually gets done
Compact, high power-to-weight ratio for real transportability

Ideal Applications

Sludge or light slurry
Tank clean-out
Trench and pond cleaning
Mining and quarries
Construction site dewatering

Specifications

Model	WEDA S30N
Series	WEDA Sludge (S)
Horsepower	3–4 HP
Max Flow	230–250 gpm
Max Head	52–58 ft
Shaft Speed	3500 rpm
Rated Output	2.2–3 kW
Max Power Input	2.9–3.9 kW
Discharge	3" NPT
Max Solids	2"
Specific Gravity	up to 1.2
pH Range	5 to 8
Weight	56 lb
Height	24.4 in
Width	12.8 in
Diameter	9.8 in
Warranty	12 months from start-up / 18 months from receipt (whichever comes first)
Country of Origin	Sweden / China assembly

Configurations

Voltage	Part Number	Horsepower	Max Flow	Max Head
220-240V 60HZ 1~	3081620407	3 HP	230 gpm	52 ft
220-240VY// 60HZ	3081620408	4 HP	250 gpm	58 ft
460V YSER 60HZ	3081620418	4 HP	250 gpm	58 ft

Why Buy From A1 Compressor Warehouse

Authorized Atlas Copco dealer — full factory warranty support.
Free application sizing — call (803) 526-5797 or email sales@a1compressorwarehouse.com before you order.
Same-day quote response, 24-hour order processing.
Direct-to-consumer pricing — no middleman markup.

Specifications

Owner's Manual (PDF)

Brand	Atlas Copco
Model #	WEDA S30N
Mfr Part #	3081620407
Horsepower	3–4 HP
CFM	230–250 gpm
Voltage	220-240V 60HZ 1~ / 220-240VY// 60HZ / 460V YSER 60HZ
Weight	56 lb
Dimensions	24.4" H x 12.8" W x 9.8" dia
Warranty	12 months from start-up / 18 months from receipt (whichever comes first)
Country of Origin	Sweden / China assembly