Delavan 5940-201C 12V Diaphragm Pump – 15.2 L/min, 3 Bar (45 PSI)

Delavan 5940-201C – Mid-Flow 12V Pressure Demand Diaphragm Pump

The Delavan 5940-201C is a versatile 12V demand diaphragm pump suited to smaller spray booms (with pressure regulator), boomless nozzles, and dual spot spray gun setups. With a high torque motor, run-dry capability, and 100% factory testing, it delivers dependable performance in the paddock — made in the USA.

Key Features

• Pressure Demand Operation – Built-in pressure switch automatically starts and stops based on system demand
• High Torque Motor – Maintains superior flow at pressure
• Run Dry Capable – Safe to operate without fluid
• Self-Priming – Flexible installation without manual priming
• Viton Valves – Chemical-resistant for herbicides and fertilisers
• Santoprene Diaphragm – Durable across a wide range of fluids
• 5D Quick Attach Ports – 19mm snap fit for fast, tool-free hose connection
• 100% Factory Tested – Every unit verified before dispatch
• Made in USA – Built to last in demanding agricultural conditions

Technical Specifications

• Flow Rate: Up to 15.2 L/min (5.4 GPM)
• Pressure: Up to 3 Bar (45 PSI)
• Pump Type: Pressure Demand Diaphragm
• Max Current Draw: 11.3A
• Valves: Viton
• Diaphragm: Santoprene
• Ports: 19mm (5D) Quick Attach
• Power: 12V DC – Wire leads with 2-pin moulded connector
• Weight: 3.63 kg (8 lbs)

Demand Operation – How It Works

The built-in pressure switch automatically stops the pump when outlets are closed and restarts it when flow is needed. This reduces noise during idle and extends pump life. Best suited to spot spraying, boom spraying, and single or dual-outlet systems.

If using low flow applications consider using a pressure control valve to ensure long pressure switch life.