John Dow Used Oil Storage System - 500 Gallon - AGS-500D

The pump is a 1" air-operated diaphragm pump, so it requires a compressed air source. The system includes an air filter/regulator, a manual-operated air inlet shut-off valve, and an air supply connection hose with quick-coupler to connect to your shop's air line. The specific required air pressure is not detailed here — confirm the PSI requirements on the Technical Data Sheet before installation.

The double-wall construction creates an outer containment layer sized to hold 110% of the tank's 500-gallon capacity. If the inner tank were ever to leak, the outer wall would capture the full volume of oil plus additional overflow, preventing spills from reaching the floor or environment.

When the tank reaches its capacity, the automatic air shut-off cuts the air supply to the diaphragm pump, stopping oil flow before the tank can overflow. This works alongside the manual-operated air inlet shut-off valve, which gives you additional manual control over pump operation.

The system includes the 500-gallon UL-listed double-wall tank, a 1" air-operated diaphragm pump (30 GPM), a 3/4" x 10" suction hose with quick-connect coupler, an air filter/regulator, an air supply connection hose with quick-coupler, a 2" drop tube with camlock fitting and dust cover, a locking security/environmental cover, and a manual air inlet shut-off valve. You will need an existing compressed air source to power the pump.

Yes, the UL-listed double-wall tank is available in capacities ranging from 180 to 500 gallons, so you can select a size that better matches your facility's used oil volume.

This system comes with a one-year limited warranty from John Dow Industries. For the specific terms, inclusions, and exclusions of the warranty, contact John Dow Industries directly for full details.