Monster 12 GPM Bare Pump - 1hp, 230/460V 3-Phase

The ultimate heavy-duty transfer system. We pair our flagship cast-iron positive displacement pumphead with an industrial-grade US-made Baldor motor for fast, open-ended transfer of light to heavy viscosity oils at a reliable 12 GPM.

Engineered to provide a truly robust, high-volume transfer solution, the Monster Transfer Series is built modularly. By combining a dedicated, heavy-duty fluid pumphead with an industrial-grade electric motor, we've created a self-priming, continuous-duty system built to excel in demanding environments and optimized for specific fluid applications.

The Heart + The Muscle (Our Modular Philosophy)

Our pumps are designed as true fluid transfer systems by pairing a specialized pumphead (The Heart) with a powerful electric motor (The Muscle). This allows us to create the perfect tool tailored for your specific viscosity and application needs.

Component 1: The Monster GSM25 Pumphead

At the heart of the system is the GSM25—a direct-drive, cast-iron positive displacement gear pumphead. It utilizes large displacement, helical-cut steel gears for incredibly fast, quiet, and pulseless fluid transfer. It is inherently self-priming, relies on the fluid you pump for internal lubrication, and features high-temp Viton seals.

Component 2: The Electric Motor

Because moving thicker fluids efficiently requires substantial torque, we match the pumphead with a power plant built to handle the load. This bare pump assembly features a Stock US-Made Baldor Motor. It is shipped without a handle or wiring, providing an excellent foundation for hardwiring the pump into a custom skid, processing system, or existing shop infrastructure.

Motor Specifications

System Performance Specifications

• System Flow Rate: 12 GPM
• Pump Design: Positive Displacement Gear Pump
• Self-Priming: Yes
• Port Size: 1" NPT Inlet / Outlet

What’s Included in the Box

• GSM25 Cast-Iron Gear Pumphead
• US-Made Baldor Electric Motor (1hp)
• Three-piece shaft coupler with rubber element
• Two (2) 1" NPT to 1.25" Hose Barbs

Note: Hoses and wands are sold separately.