Udor KAPPA 25 GR3/4 — 7 GPM (26.5 L/min) Diaphragm Pump

Take the KAPPA 25’s performance and add a petrol engine, and you get the KAPPA 25 GR3/4, which uses an integral gear reduction box to mount straight onto a 3/4 inch shaft from a 4–6.5 HP engine. It keeps the same 26.5 L/min (7.0 GPM) flow and 24 bar (350 PSI) pressure ceiling as the base KAPPA 25, but at 28 lbs it carries the extra weight of the gearbox housing. That gearing lets a small, inexpensive engine drive the pump at its correct 550 RPM without belts.

Specifications

Model	Udor KAPPA 25 GR3/4
Flow Rate	26.5 L/min (7 GPM)
Max Pressure	24 bar (350 PSI)
Speed	550 RPM
Drive Configuration	Gear reduction for 3/4″ shaft petrol engine, 4-6.5 HP
Weight	12.7 kg (28 lbs)
Type	Diaphragm Pump

Applications

• Petrol-powered boom sprayers away from mains or battery power
• Portable spray carts and trailers
• Contractor spraying rigs needing engine independence
• Orchard and paddock spot spraying
• Backup pumps for fixed installations

Key Features

• Integral gear reduction for 3/4 inch petrol engine shaft, 4–6.5 HP
• Runs the pump at its correct 550 RPM without belts
• 24 bar (350 PSI) maximum pressure
• Desmopan diaphragm, anodised aluminium body
• Self-contained petrol-drive package

Technical Documents

• Udor KAPPA 25 GR3/4 Parts Schematic (PDF)
• All Udor Kappa Series Documents

Parts & Service

AES Waterblasters carries genuine Udor spare parts, diaphragm kits and valve kits for the Kappa series, with expert service and repairs from our Auckland workshop. Contact us on 09 271 4782 for parts, servicing or advice on the right pump for your application.

Related Models

Part of the Udor Kappa Series. Other models in this series:

• Udor KAPPA 7 12-Volt — 7.6 L/min (2 GPM)
• Udor KAPPA 15 12-Volt — 13.3 L/min (3.5 GPM)
• Udor KAPPA 15 GR3/4 — 13.3 L/min (3.5 GPM)
• Udor KAPPA 18 DC — 16 L/min (4.2 GPM)
• Udor KAPPA 32 GR3/4 — 36 L/min (9.5 GPM)
• Udor KAPPA 43 GR3/4LP — 40 L/min (10.5 GPM)