WP40A 7hp 4inch Gasoline Water Pump

Product Overview

The WP40A is a 7 HP gasoline-engine water pump with inlet and outlet of 100 (4"), delivering up to 75 m3/h at 25 m head and self-priming to 7 m suction. The air-cooled 4-stroke OHV single cylinder engine has a 70X55 mm bore x stroke and 212 cc of displacement, with 7.0 HP output at a compression ratio of 8.5:1. The fuel tank holds 3.6 L, the oil sump 0.6 L, and the unit measures 540X435X470, weighing 27 kg gross.

Key Features

• 75 m3/h at 25 m head: the WP40A moves 75 cubic metres per hour up to 25 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.
• 7 HP gasoline engine, 70X55 mm bore x stroke in 212 cc: air-cooled 4-stroke OHV single cylinder, delivering 7.0 HP at a compression ratio of 8.5:1, which is what keeps this size pumping rather than straining at the duty point.
• 3.6 L tank, 0.6 L oil, 27 kg gross, 540X435X470: starting is by recoil, and the air cleaner is half-dry. One self-contained unit — no separate generator, no mains supply.

Applications

The WP40A 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 7 HP gasoline driven pump. For trading companies, distributors and project buyers, WP40A 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 WP40A deliver?

Up to 75 m3/h at 25 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 7 HP air-cooled 4-stroke OHV single cylinder gasoline engine with 70X55 mm bore x stroke and 212 cc of displacement, giving 7.0 HP output at 8.5:1 compression ratio. It runs on gasoline, with a 3.6 L tank.

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

Starting is by recoil. The oil sump holds 0.6 L and the fuel tank 3.6 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 WP40A, and how much does it weigh?

The bare pump measures 540X435X470 and weighs 27 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 WP40A 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.