A solvent pump for a parts washer is a submersible, direct-drive pump that sits inside the washer's reservoir and continuously recirculates solvent from the tank to a hand-held spigot or fixed nozzle, letting a technician brush and rinse greasy or oily components in a steady stream of filtered fluid. The pump draws solvent through an intake screen, pushes it through internal windings and seals rated for continuous chemical exposure, and delivers it under moderate pressure through a flexible hose or metal spigot above the wash basin.
Automotive shops, machine shops, and industrial maintenance facilities depend on a reliable solvent pump as the single point of failure in an otherwise simple parts washer — when the pump fails, the entire washing station stops functioning even though the tank, basin, and solvent remain fine. Chemical-resistant construction, most commonly Viton seals paired with a cast aluminum or corrosion-resistant plastic housing, lets these pumps run continuously submerged in solvent without seal degradation, making them the most frequently replaced individual component on a parts washer.
Common configuration: 115/120VAC single-phase, 60 Hz operation, flow rates from roughly 190 GPH (3.2 GPM) to 340+ GPH depending on model, and compatibility with UL-classified PJQU solvents (flash point no lower than 100°F), Stoddard solvent, and deodorized kerosene. Some models are built specifically for water-based/aqueous cleaning solutions instead of petroleum-based solvent.
Quick-Reference Spec Glossary
- Flow rate (GPH/GPM)
- Fluid recirculation rate at rated head height
- Voltage/Amperage
- Typically 115/120VAC, 60 Hz; amp draw usually under 1A
- Seal material
- Viton® preferred for solvent resistance
- Solvent compatibility
- UL PJQU-classified solvents (flash point ≥100°F), Stoddard solvent, or aqueous-only
- Outlet size/type
- Typically 1/4" or 1/2" MPT/FPT, or barbed fitting
- Cable/cord length
- Submersible power cord length, commonly ~5 ft
- Thermal protection
- Auto thermal cutoff to prevent motor overheating
- Housing material
- Cast aluminum or chemical-resistant plastic