Aspen Aeration Rocking Piston Air Compressor 2nd Generation Rocking Piston Also attached is a pressure

Also attached is a pressure relief valve which opens at approximately 25 psi to prevent damage to the compressor

Thick wall PVC hose sinks under its own weight for easy installation

glass test tubes and color charts for 500+ tests

four test tubes with snap-tight caps

This tubing is commonly used with the following Air Pump Compressors: Hiblow

Aspen Aeration Rocking Piston Air Compressor 2nd Generation Rocking Piston Also attached is a pressureGen 2 rocking piston compressors are specifically designed for the demanding job of 24 hour operation. They are ideal for pond aeration systems. The oil less design safely aerates ponds with no electricity in the water. The shore mounted compressor sends air through tubing to a bottom mounted diffuser for a safe, effective way to aerate ponds. Compressors are available in 115v or 230v.