ACS RF50T Two-Stage Air Compressor Pump, 5 HP, 15.9 CFM at 175 PSI, Fusheng HTA-80 Replacement

The RF50T is the 5 HP two-stage pump in the ACS RF Series, the clone replacement line AirComParts builds for Fusheng and FS-Curtis machines. Three cylinders, two stages, and an intercooler between them get it to 15.9 CFM at a full 175 PSI at 950 RPM. The higher pressure is the reason to choose it over the single-stage RF50S: a 175 PSI tank stores substantially more usable air in the same volume, so the pump cycles less often for the same duty.

Key specifications

• Horsepower: 5 HP
• Delivery: 15.9 CFM at 175 PSI
• Speed: 950 RPM
• Stages and cylinders: 2 stage, 3 cylinder
• Construction: cast iron
• Weight: 148 lb
• Factory casting reference: ZL2080FT

What it replaces

• Fusheng HTA-80
• FS-Curtis E-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 RF50T is the two-stage 175 PSI pump; a 115 PSI single-stage package takes the RF50S instead. Check the machine nameplate before ordering.

Service notes

This is a bare pump: no motor, guard, tank or controls. Two-stage pumps put real heat into the intercooler, so keep the cooler tube, flywheel fins and belt guard airflow clear. Replace the check valve and belts with the pump, clean or replace the discharge tube to the tank, keep a fresh intake filter on it, and use compressor oil.

Typical applications

Stationary shop compressors running 175 PSI tools, automotive and fleet service bays, fabrication and welding shops, and as a direct replacement pump on 5 HP two-stage Fusheng and FS-Curtis packages.

The ACS RF50T two-stage air compressor pump delivers 15.9 CFM at 175 PSI on 5 HP from 3-cylinder cast iron, replacing the Fusheng HTA-80 and FS-Curtis E-50.