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4“ water transfer pump

4 inch|15 HP|30M|90 m³/h
ce 1
2 years warranty
epa 1
no brand30 sets
OEM standard50 sets
OEM special100 sets

WP40B Specifications

Model WP40B
Outlet Size(mm) 100
Inlet Size(mm) 100
Displacement Q. max(m3/h) 90
Lift H. max(m) 30
Suction (m) 8
Fuel Tank Capacity 6.5L
Fuel option #92, #95 Unleaded Gasoline
Self start motor Recoil start
Fuel consumption radio ≤395g/kW/hh
Ignition system T.C.I
Engine & Emission Specifications
Engine Model BS177F
Fuel Type Gasoline
Engine Speed(RPM) 3600
Bore × Stroke(mm) 77*58
Engine Displacement(cc) 270
Engine/Motor Type 1-Cylinder, Air-Cooled, 4-Stroke, Direct Injected,OHV
Engine Oil grade #5W-40
Fuel Capacity /
Low Oil Shutdown/Alert Yes
Recoil Start Yes
Electric Start Optional

BISON is a trusted name in water pump manufacturing, manufacturing wholesale 4″ water transfer pumps. The water transfer pump uses a rotating impeller to create a suction that draws water in through the inlet hose. The impeller then pushes the water out through the drain hose to the desired location. This product is Ideal for you selling to customers including:

  • Agriculture: irrigation, drainage and water transfer between ponds and tanks.
  • Construction: trench, foundation and excavation drainage.
  • Pool and Spa Maintenance: Filling and emptying pools and spas, and moving water during cleaning.
  • Industrial applications: conveying process water, tank cleaning and wastewater removal.

Highlights of the 4″ water transfer pump:

  • High flow: The water transfer pump is equipped with a 4-inch water inlet and outlet, which can provide a flow of 90m³, reducing the friction between water and the pump body, ensuring the rapid and effective transfer of large amounts of water.
  • Sturdy and durable: The pump is made of cast iron and can complete the water transfer task even in harsh environments.
  • Easy starting: The T.C.I. ignition system ensures easy starting, and the low oil shutdown feature ensures the engine is protected from damage, extending its service life and reducing maintenance costs.
  • Self-priming design: The pump can self-prime, eliminating the need to absorb water, reducing labor loss during water transfer manually.
4 water transfer pump details
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4 water transfer pump details 4

A class core parts

engine connecting rod

engine connecting rod

The mechanical strength belongs to the density of ADC12 aluminum alloy cast aluminum, and the weight monitoring can ensure the consistency of structural tensile strength and processing CPK

engine piston

pump engine piston

Adopt Z109 material to increase the wear resistance and reduce thermal deformation, to ensure the weight of the piston and the accuracy of machining

engine case

pump engine case

Using high-precision fixtures, machining center equipment to ensure precision, and high-density material strength, BISON's box can meet the durability test for 125 hours, and can meet emission standards

pump head

intake and exhaust valves

BISON only adopts high-quality pump heads with sufficient materials (reasonable and thick alloy ratio) and excellent processing technology (oxidation resistance, corrosion resistance, mold, flatness, and sealing)

tight quality contorl

pump suction simulation test

4“ water transfer pump testing

BISON water pump comprehensive test bench is equipped with a comprehensive test tank, which is higher than the national standard sampling inspection type and durable, ensuring the quality of the product in all aspects.

Test the pump suction online and simulate negative pressure detection. 100% full inspection to determine the extremely low failure of the product.

Regular outdoor field testing of water pumps to ensure the pumping efficiency of the product in practice.

Professional technicians with 15-20 years of experience

performance commissioning

Performance Commissioning

machine assembly

Machine Assembly

artwork qa

Artwork QA

full inspection

Full Inspection

power specialized inspection

water pump specialized inspection

parts assembly

Parts assembly

core assembly

Core Assembly

water pump specialized inspection

Power Specialized Inspection


By partnering with BISON you can offer your customers 4″ water transfer pump with the following benefits:

  • Proven quality: BISON’s reputation for quality provides you with reliable products, equipped with CE certificates, Euro5 certificates, to keep your customers satisfied.
  • Competitive prices: BISON offers competitive prices to water pump dealers, bringing you profits.
    Excellent customer support: BISON provides you and your customers with comprehensive technical support to ensure a smooth purchasing experience.
  • Full-product supply chain: In addition to 4″ water transfer pumps, BISON offers various pumps to meet different customer needs, making you your one-stop shop for pump solutions.

When you cooperate with BISON, you benefit from our high-quality products, competitive pricing, and outstanding customer support.

gasoline water pump parts

Discounted Accessories

24 hour online 5 minute response

24-hour online, 5-minute response

engineer on site service

Engineer on-site service

Packaging & Delivery

Packaging details: brown strong carton, water pump is protected with poly bag, wooden, 1pc / carton.
Lead Time: Shipped in 25 days after payment.

Speak with a BISON sales manager

Contact us today for expert advice.



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