Udor KAPPA 15 GR3/4 — 3.5 GPM (13.3 L/min) Diaphragm Pump

The KAPPA 15 GR3/4 swaps electric power for a petrol engine, using a built-in gear reduction box that mounts directly onto a 3/4 inch keyed engine shaft from a 4–6.5 HP motor. That gearing brings a small engine down to the pump’s ideal speed, delivering 13.3 L/min (3.5 GPM) at up to 20 bar (275 PSI) without any belts or pulleys to maintain. At 17 lbs it stays light enough for a portable frame or cart, making it a simple petrol-driven alternative to the battery KAPPA 15 range.

Specifications

Model	Udor KAPPA 15 GR3/4
Flow Rate	13.3 L/min (3.5 GPM)
Max Pressure	20 bar (275 PSI)
Speed	1450 RPM
Drive Configuration	Gear reduction for 3/4″ shaft petrol engine, 4-6.5 HP
Weight	7.7 kg (17 lbs)
Type	Diaphragm Pump

Applications

• Portable petrol-powered spray carts
• Small boom sprayers away from vehicle power
• Backup spraying where no battery or mains supply exists
• Tank washdown and general clean-up spraying
• Contractor spray units needing engine independence

Key Features

• Direct gear reduction for 3/4 inch petrol engine shaft, 4–6.5 HP
• No belts or pulleys required
• 20 bar (275 PSI) maximum pressure
• Desmopan diaphragm, anodised aluminium body
• Light at 17 lbs for portable frames

Technical Documents

• Udor KAPPA 15 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 18 12-Volt — 16 L/min (4.2 GPM)
• Udor KAPPA 25 — 26.5 L/min (7 GPM)
• Udor KAPPA 32 GR3/4 — 36 L/min (9.5 GPM)
• Udor KAPPA 43 GR3/4LP — 40 L/min (10.5 GPM)