FS-Curtis Pump

A basic pump is the bare compression assembly — the pump itself, without motor, receiver tank, or controls. It is ordered to rebuild or re-power an existing compressor installation where the tank, motor, and controls are still serviceable.

When an existing installation has a worn pump but a sound tank, a good motor, and working controls. Replacing just the pump is considerably cheaper than a full unit. If the tank is corroded or the motor is failing, a complete package is the better decision.

Basic pump assemblies from the CT, ML, and OL series covering roughly 5 HP through 30 HP, including oil-less pumps from the OL line. Each pump is matched to a specific horsepower range.

Match the pump model to your motor horsepower and speed, confirm the drive arrangement and pulley sizing, and verify the mounting pattern fits your baseplate or tank. Confirm the exact pump model number for your compressor before ordering — pumps within a series are not interchangeable across horsepower ranges.

Right. A pump replacement is the natural point to inspect the tank for internal corrosion, since a compressor old enough to need a pump has usually had years of condensate exposure. Replacing a pump onto a corroded tank is not a safe outcome.

Alignment, drive tension, and correct break-in matter for pump life, and the electrical work must be done properly. Many shops handle it in-house; if you are not confident in drive alignment and break-in procedure, have it done by someone who is.

Most manufacturers specify a break-in run period followed by an early first oil change. Skipping that first change leaves initial wear particles circulating through the pump for the rest of its life. Follow the specific pump's stated procedure — it is the cheapest thing you can do for pump longevity.