503/7 Diaphragm Pump w/ Foot

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

503/7 (Ref. No. 821617)

• Tapered shaft
• For tractor use with HARDI transmission shaft
• Supplied with wide base plate
• Normal operating revolutions: 540 RPM
• Maximum pressure: 220 PSI (15 bar)
• Maximum vacuum: 13.2 PSI (0.90 bar)
• Weight: 20 lbs (9.0 kg)

HARDI 503 Pump Parts List