Gast Rotary Vane Aerator Pumps

GAST OILESS ROTARY VANE PUMPS AND COMPRESSORS

The Gast Rotary Vane units offer oil-less operation to ensure the discharge air remains free of contamination from lubricants. The Gast compressors offer high flow, pulse free air which makes them ideal for applications requiring consistent air pressure and flow.

HOW DOES A GAST ROTARY VANE PUMP WORK?

Pumping action is produced by a series of sliding, flat vanes as they rotate in a cylindrical housing.An eccentrically mounted rotor turns and the individual vanes slide in and out of their slots by centrifugal and pressure-loading forces. This creates a series of air compartments of unequal volume against the wall of the housing.

These compartments get larger during the suction part of the cycle, creating vacuum at the intake port and smaller during the discharge portion of the cycle, creating pressure at the exhaust port. The vacuum and pressure flows are free of pulsation because the inlet and exhaust ports do not have valves, and the air is moved continuously rather than intermittently.

WHY USE A GAST ROTARY VANE AIR PUMP?

Gast Rotary Vane vacuum pumps and compressors have certain significant advantages. In addition to providing smooth, pulse-free air flow without receiver tanks, they are compact (or equivalently offer high flow capacities for a given size), are simple and economical to install and operate, have low starting and running torque requirements, produce minimal noise or vibrations, are capable of long, service-free life, and are easily serviced.

If these features are what you need in your pneumatic application, a Gast Rotary Vane model can provide you the right solution.

FEATURED GAST ROTARY VANE MODELS

Gast AT05 Rotary Vane Septic Air Pump

• Specifications: 4.8 cfm, 5.0 PSI, 1/4 HP, 115V, includes external cooling fan.
• Compatibility: Replaces Gast 0323, 0523, RV03, RV05, Thomas QR-0030, and QR-0050. Fits 500-750 GPD aerobic treatment systems (ATUs).
• Features: Quieter operation, energy-efficient design, and thermal protector to prevent overheating. Comes with a 1-year manufacturer’s warranty.
• Applications: Ideal for brands like Nayadic, Clearstream, and other NSF Class 1 Standard 40 systems.

Gast 0523 Rotary Vane Septic Air Pump

• Specifications: Suitable for 500-750 GPD systems, operates at 10 PSI, capable of pond aeration up to 15-18 feet deep.
• Compatibility: Replaces Gast 0323, RV03, RV05, and Thomas QR-0030/QR-0050 models.
• Features: Internal muffler and filter for quieter operation, cast iron housing for durability, and a 1-year warranty.
• Note: Does not include an external cooling fan, unlike the AT05.

Gast 1023-101Q Rotary Vane Septic Air Pump

• Specifications: Dual voltage (115V/230V, pre-wired for 120V), oil-less, includes internal muffler and thermal protector.
• Compatibility: Used in Nayadic and other high-capacity systems, ideal for low-pressure applications.
• Features: Tough cast iron housing, sealed bearings, and a 1-year warranty.

WHY SHOP WITH SEPTIC SOLUTIONS?

• Genuine OEM Parts: We partner directly with Gast to provide authentic, factory-certified components, avoiding inferior aftermarket alternatives.
• Expert Guidance: Our team, with over 100 years of combined wastewater industry experience, can help you select the right pump or part for your system. Call us at 1-877-925-5132 or email sales@septicsolutions.com.
• Fast, Free Shipping: Most orders placed by 2 PM CST ship the same day with free 2-3 day delivery.
• Comprehensive Inventory: Over 1,500 septic products, including pumps, aerators, filters, and more, all in stock and ready to ship.
• Customer Satisfaction: Family-owned since 1989, and with over 20,000 4+ star reviews across the web, we prioritize quality products and exceptional service.