Monster 12 GPM Bare Pump - 1hp, 120/230V 60HZ

The Monster 12 GPM Bare Pump in 1HP is the higher-torque configuration of the GSM13 pumphead line — more horsepower than the 3/4HP portable motor, in a bare assembly format built for hardwiring into a skid, control panel, or custom installation. The extra horsepower over the 3/4HP portable gives it more headroom for medium viscosity fluids and sustained-load applications without stepping up to a larger pumphead.

The GSM13 pumphead moves 12 GPM at 3450 RPM. At 1HP, this configuration handles heavier fluid loads and longer run cycles than the 3/4HP portable motor — useful when the pump is running continuously or moving fluids thicker than light vegetable oil. Ships bare: no handle, no switch, no plug. Wire it into your panel and mount it to your skid.

Bare Pump — No Handle, No Wiring

This unit ships without a carry handle, switch, or pre-wired cord. It is intended for permanent or semi-permanent installation where you will provide your own mounting, wiring, and controls. If you need a ready-to-run portable unit, see the Monster 12 GPM Portable Pump (W2065).

The GSM13 Pumphead

The GSM13 is a direct-drive, cast-iron positive displacement gear pumphead with helical-cut steel gears. Self-priming, pulseless, and quiet. Viton seals for compatibility with vegetable oils, motor oils, gear oils, and light to medium viscosity fluids. The fluid itself lubricates the internal gears — no separate lubrication required.

The Motor

US-Made Baldor industrial motor, 1HP, 3450 RPM, 120/230V 60HZ, NEMA 56C frame. Ships bare — no switch, no cord, no handle. Requires hardwiring by a qualified electrician.

Specifications

• SKU: W2078
• Pumphead: GSM13 Cast-Iron Positive Displacement Gear Pump
• Motor Speed: 3450 RPM
• Flow Rate: 12 GPM
• Self-Priming: Yes
• Port Size: 1" NPT Inlet / Outlet
• Seals: Viton (high-temp)
• Motor: 1 HP, 120/230V 60HZ, NEMA 56C
• Handle: Not included (bare pump)
• Wiring: Not included — requires hardwiring
• Viscosity: Light to medium viscosity oils

What's in the Box

• GSM13 Cast-Iron Gear Pumphead
• US-Made Baldor Motor (1 HP, 120/230V 60HZ)
• Three-piece shaft coupler with rubber element
• Two (2) 1" NPT Hose Barbs

Note: Hoses, wands, switches, and mounting hardware are sold separately. Requires hardwiring into 120V or 230V single-phase power source.