Multiquip High-Pressure Centrifugal Pump | 11.7 HP | Aluminum/Cast Iron | Gas-Powered | Max 210 GPM | Max 377 ft. Head | Honda GX390 | QPT405SLT

4-Inch High-Pressure Centrifugal Pump for High-Head Water Transfer

The Multiquip QPT405SLT is a 4-inch high-pressure centrifugal pump designed for high-head clear-water applications requiring substantial pressure and water-transfer capacity. With a maximum pumping capacity of 210 GPM, maximum head of 377.3 feet, and maximum pressure of 163 PSI, the QPT405SLT is suited for agricultural watering, irrigation, jetting, water wash, construction, excavation, drainage, mining, municipal applications, emergency response, and firefighting support.

The QPT405SLT features a wet self-priming design, aluminum pump construction, a closed sand-cast aluminum impeller and volute, silicon/carbon mechanical seal, and a heavy-duty tubular steel frame. Its Honda GX390 gasoline engine provides 11.7 HP, while the three-way discharge manifold provides one 4-inch and two 3-inch discharge ports that can be used independently or simultaneously according to application requirements.

Product Features:

• 210 GPM Maximum Flow: Delivers up to 210 gallons per minute for high-volume water-transfer and high-pressure applications.
• 377.3-Foot Maximum Head: Provides up to 377.3 feet of maximum head for demanding vertical and long-distance water-transfer applications.
• 163 PSI Maximum Pressure: Produces up to 163 PSI for high-pressure applications such as jetting, irrigation, water wash, and firefighting support.
• 4-Inch Suction Port: Features a 4-inch NPT male suction connection for compatible suction hose and fittings.
• Three-Way Discharge Manifold: Includes one 4-inch and two 3-inch NPT male discharge ports that can be used independently or simultaneously.
• Honda GX390 Engine: Uses an 11.7 HP, 389 cc, air-cooled, four-stroke OHV gasoline engine with recoil starting and low-oil shutdown protection.
• Closed Aluminum Impeller: Uses a sand-cast aluminum closed impeller and volute engineered for high-pressure water transfer.
• Silicon/Carbon Mechanical Seal: Uses a 304 stainless steel mechanical seal designed for abrasion resistance and high-temperature operation.
• Heavy-Duty Tubular Frame: Uses a 1.07-inch tubular steel frame to help protect the pump and engine while providing a sturdy transport structure.
• Stainless Steel Hardware: Corrosion-resistant hardware helps support long-term durability in demanding operating environments.

What Is a High-Pressure Centrifugal Pump?

A high-pressure centrifugal pump uses a rotating impeller to transfer water while generating greater pressure and head than conventional low-pressure water-transfer pumps. The QPT405SLT combines a high-efficiency closed impeller and volute with a high-output gasoline engine to move water over substantial vertical distances and through systems requiring elevated pressure.

210 GPM High-Pressure Performance

The QPT405SLT delivers up to 210 GPM, 377.3 feet of maximum head, and 163 PSI of maximum pressure. Its maximum suction lift is 25 feet, providing flexibility for drawing water from suitable sources such as lakes, rivers, tanks, reservoirs, and other water supplies.

Wet Self-Priming Pump Design

The QPT405SLT uses a wet self-priming design that allows the pump casing to be filled with water before operation. Once properly primed, the pump is designed to establish water flow quickly. The 4-inch suction port and large strainer support high-volume water intake, while the pump should always be operated with the suction strainer fully submerged and the casing properly filled with water.

High-Pressure Impeller and Three-Way Discharge

The QPT405SLT uses a closed sand-cast aluminum impeller and volute designed for high-pressure fluid transfer. Its three-way discharge manifold provides one 4-inch and two 3-inch discharge connections, allowing discharge ports to be configured independently or simultaneously depending on the pumping application.

Honda GX390 Engine

The QPT405SLT is powered by a Honda GX390 389 cc, air-cooled, four-stroke OHV gasoline engine rated at 11.7 HP and operating at 3,600 RPM. The engine uses recoil starting, a mechanical governor, dual-element air filtration, splash lubrication, and an oil-alert system that shuts down the engine when the oil level becomes too low. The 1.6-gallon fuel tank provides approximately 1.74 hours of runtime under the manufacturer's specified operating conditions.

Durable Construction for Demanding Applications

The QPT405SLT combines a sand-cast aluminum pump body with cast aluminum impeller and volute components, durable cast iron connection ports, stainless steel hardware, and a 1.07-inch tubular steel protective frame. The pump has a dry weight of approximately 273.4 pounds and overall dimensions of approximately 36.1 inches long by 22.8 inches wide by 28.6 inches high.

Operating Conditions

The QPT405SLT is designed for suitable clear-water pumping applications and can handle solids up to 0.18 inches (4.5 mm). The maximum fluid temperature is 104°F (40°C), and the maximum suction lift is 25 feet. Multiquip specifies that the pump is not intended for pumping salt water, corrosive chemicals, flammable fluids, or fluids containing toxic substances.

Warranty

The Multiquip QPT405SLT pump has a 2 Year Warranty from the date of purchase. The Honda GX390 engine has a 3 Year Warranty, while applicable hoses have a 3-month warranty. Refer to Multiquip's warranty terms for complete coverage, conditions, and exclusions.

Why Choose the Multiquip QPT405SLT High-Pressure Pump?