ACS RF50S Single-Stage Air Compressor Pump, 5 HP, 18.4 CFM at 115 PSI, Fusheng TA-80 Replacement

The RF50S is the 5 HP single-stage pump in the ACS RF Series, the clone replacement line AirComParts builds for Fusheng and FS-Curtis machines. Three cylinders on the 80-series casting give it 18.4 CFM at 115 PSI at 880 RPM, which is more air than most 5 HP single-stage pumps manage. If your machine is a 115 PSI package and you need volume rather than pressure, this is the pump that fits it.

Key specifications

• Horsepower: 5 HP
• Delivery: 18.4 CFM at 115 PSI
• Speed: 880 RPM
• Stages and cylinders: single stage, 3 cylinder
• Construction: cast iron
• Weight: 155 lb
• Factory casting reference: ZL3080F

What it replaces

• Fusheng TA-80
• FS-Curtis ES-50

The RF Series is dimensionally built to drop into the machine the original pump came out of, so the base bolt pattern, flywheel and plumbing positions follow the original. The RF50S is the single-stage 115 PSI pump; if your machine is a 175 PSI two-stage package you want the RF50T instead. Check the machine nameplate before ordering.

Service notes

This is a bare pump: no motor, guard, tank or controls. Replace the check valve and belts whenever you replace a pump, and clean or replace the discharge tube between pump and tank. Keep a fresh intake filter on it, check the oil at the sight glass before heavy runs, and use compressor oil rather than automotive engine oil.

Typical applications

Stationary shop compressors, automotive and fleet service bays, body shops and tire service, farm and agricultural air, and as a direct replacement pump on 5 HP single-stage Fusheng and FS-Curtis packages.

The ACS RF50S single-stage air compressor pump delivers 18.4 CFM at 115 PSI on 5 HP from 3-cylinder cast iron, replacing the Fusheng TA-80 and FS-Curtis ES-50.