Gast AF544 Air Compressor Inlet Valve 56 Frame Piston Pump

Product Description

The GAST AF544 is an inlet valve designed as a direct-fit accessory for GAST 56 Frame piston pumps. The inlet valve controls airflow into the pump cylinder on the intake stroke, allowing the piston to draw in atmospheric air while preventing backflow. It is a wear-and-service component that HVAC technicians, industrial maintenance professionals, and equipment service techs replace during routine pump rebuilds or after a loss of pump performance. Proper inlet valve function is critical to maintaining rated compression output and protecting downstream pneumatic systems.

This valve is suited for light-industrial and commercial applications where GAST 56 Frame piston compressors are deployed, including medical equipment, pneumatic control systems, and general compressed-air supply. Replacement is typically performed during scheduled preventive maintenance or when symptoms such as reduced pressure output, slow cycle times, or audible valve flutter indicate wear. The part ships as a single valve assembly.

Key Features

• OEM-type inlet valve sized specifically for GAST 56 Frame piston pump platforms
• Restores proper one-way airflow on the intake stroke to maintain compression efficiency
• Single-piece assembly simplifies replacement during pump rebuild or field service
• Compact form factor at approximately 3.31 inches in diameter facilitates installation in tight pump housings

Compatibility

Designed for use with GAST 56 Frame piston pumps.

Installation Notes

Installation should be performed by a qualified technician familiar with pneumatic compressor service. Disconnect and lock out all electrical power and depressurize the system completely before disassembling the pump head. Inspect the valve seat and surrounding surfaces for wear or debris before seating the new valve. Follow the compressor manufacturer's service documentation for reassembly sequence and fastener specifications.