503/4 Diaphragm Pump, 800 RPM

General Specifications

• Compact single diaphragm positive displacement pump.
• Low power consumption
• Self-priming
• Can be run dry
• Can rotate clockwise or anticlockwise
• Single grease point for lubrication
• Dry sump to simplify maintenance
• No special tools are needed for maintenance
• Polyurethane diaphragms and seals
• Cast iron crankcase and covers
• 3/4″ suction port, 3/4″ pressure port
• Recommended to use HARDI suction and pressure dampers

503/4 (Ref. No. 821618)

• Cylindrical shaft 0.98″ (25mm) diameter
• for combustion and electric engine use
• Supplied with narrow base plate
• Normal operating revolutions: 800 RPM
• Maximum pressure: 220 PSI (15 bar)
• Maximum vacuum: 12 PSI (0.82 bar)
• Weight: 20 lbs (9.0 kg)

HARDI 503 Pump Parts List