WP40B 15hp 4inch Gasoline Water Pump

Product Overview

The WP40B is a 15 HP gasoline-engine water pump with inlet and outlet of 100 (4"), delivering up to 90 m3/h at 30 m head and self-priming to 7 m suction. The air-cooled 4-stroke OHV single cylinder engine has a 90X66 mm bore x stroke and 418 cc of displacement, with 15.0 HP output at a compression ratio of 8.0:1. The fuel tank holds 6.0 L, the oil sump 1.1 L, and the unit measures 650X415X515, weighing 38.5 kg gross.

Key Features

• 90 m3/h at 30 m head: the WP40B moves 90 cubic metres per hour up to 30 metres of head, which is the working point to size pipe diameter and hose length against.
• 100 (4") inlet and outlet, 7 m suction lift: self-priming to 7 metres, so the pump primes from a tank, canal or shallow sump rather than needing to be flooded below the water line.
• 15 HP gasoline engine, 90X66 mm bore x stroke in 418 cc: air-cooled 4-stroke OHV single cylinder, delivering 15.0 HP at a compression ratio of 8.0:1, which is what keeps this size pumping rather than straining at the duty point.
• 6.0 L tank, 1.1 L oil, 38.5 kg gross, 650X415X515: starting is by electric, and the air cleaner is half-dry. One self-contained unit — no separate generator, no mains supply.

Applications

The WP40B is built for clean water transfer, irrigation and dewatering. It is supplied to irrigation contractors, agricultural machinery dealers, mining and construction pump builders, and water contractors who need a 15 HP gasoline driven pump. For trading companies, distributors and project buyers, WP40B is an economical factory-backed option with steady supply and consistent quality.

Why Choose KIGERPOWER

KIGERPOWER (Ningde Kinger Electrical Machinery Co., Ltd.) has manufactured generators, engines and water pumps in Ningde, Fujian since 2006. Products are exported to 80+ countries and regions, backed by CE, SONCAP and ISO 9001 certification. Every unit is tested before shipment, and OEM/ODM programs are available with custom colors, branding, voltage and frequency settings. With factory-direct pricing and responsive after-sales support, KIGERPOWER is a reliable partner for distributors, dealers and end customers worldwide.

Learn more about our 12,000m² factory, 100% pre-shipment load testing, and international certifications on our About Us page.

FAQ

How much flow and head does the WP40B deliver?

Up to 90 m3/h at 30 m total head, with 7 m maximum suction lift. Head falls as flow rises, so size the pump against the highest point you need to lift water to, and allow for friction loss in the pipe run.

Which engine is fitted, and what fuel does it run on?

A 15 HP air-cooled 4-stroke OHV single cylinder gasoline engine with 90X66 mm bore x stroke and 418 cc of displacement, giving 15.0 HP output at 8.0:1 compression ratio. It runs on gasoline, with a 6.0 L tank.

How is it started, and what servicing does it need?

Starting is by electric. The oil sump holds 1.1 L and the fuel tank 6.0 L. Prime the pump chamber with water before every start so the mechanical seal does not run dry — for a 4-stroke engine, change the oil at the interval we specify for your duty cycle.

What size is the WP40B, and how much does it weigh?

The bare pump measures 650X415X515 and weighs 38.5 kg gross. Pallet size, container loading plan and the 20ft/40HQ quantities are available on request — they depend on packing.

What kind of water is this pump suited to?

The WP40B is a water pump intended for clean water transfer, irrigation and dewatering. It handles clean water with small particles; for water carrying leaves, mud or gravel, choose a trash or cast iron model instead.

Representative photo of the Clean Pump range (model WP40B shown). Current specification sheet and pricing on request.