Ultimate Washer Sludge Scupper Pressure Washer Sludge Pump — 86 GPM Capacity, Stainless Steel Scupper

Ultimate Washer Sludge Scupper converts a compatible pressure washer into a high-volume sludge and water pump capable of moving up to 86 GPM with vertical lift up to 20–24 feet.

This compact attachment uses your pressure washer’s flow and a venturi-style nozzle to create suction so you can remove standing water, sludge, slurry or light debris without routing solids through your machine. The stainless-steel scupper and included heavy-walled suction hose attach to a 1/4" quick-connect lance and require a minimum of about 2 GPM to begin working; higher GPM delivers greater output and lift. With no moving internal parts, the unit is low-maintenance and designed for rugged jobsite and facility use.

How does the Sludge Scupper turn a pressure washer into a pump?

The Scupper uses a 0-type venturi nozzle to convert pressurized water into a suction stream. Water driven through the nozzle entrains surrounding liquid and ejects a much larger combined volume through the discharge, producing high-output pumping without a separate powerhead.

• Requires 1/4" quick-connect on the pressure-washer lance.
• Minimum effective flow ~2 GPM; higher flow multiplies output (approx. 1:11 ratio).
• Works with pressures up to 4000 PSI and flows up to 36–86 GPM output range depending on feed.

What materials and debris can it handle safely?

Built with a durable stainless-steel scupper and a 4.0 nozzle orifice, the unit tolerates gritty mixtures, sludge and small solids without channeling them through your pump. All material travels through the replaceable tip so internal components of the pressure washer remain protected.

• Picks up solids and debris up to roughly 3/4" in size.
• Suitable for mud, sludge, paint residues, oil-water mixtures and sediment.
• Non-mechanical design means fewer wear parts and easier cleanup.

What are typical uses and performance expectations?

The attachment is a cost-effective alternative to dedicated trash pumps for many dewatering and cleanup tasks. Expect dramatic increases in discharge volume compared with the washer’s raw flow; for example, 4 GPM inlet can yield about 44 GPM output depending on lift and conditions.

• Dewatering sump pits, car-wash pits, basements, boat slips and ponds.
• Refill mobile tanks or transfer reservoir water to supply the pressure washer.
• Vertical lift practical up to ~20–24 feet; horizontal ranges vary with nozzle and flow.

How do I install and operate the Sludge Scupper?

Installation is straightforward: attach the scupper to your lance with the 1/4" quick-connect, submerge the scupper head in the source liquid, then pull the trigger on the spray gun to start suction. It will not operate from a regular garden hose; it needs the pressure washer’s flow and pressure to form the venturi effect.

• Connect 1/4" quick-connect on pressure-washer wand to the scupper’s 1/4" male plug.
• Use the included 15 ft, 1-1/2" heavy-walled suction hose for reach and abrasion resistance.
• Ensure nozzle compatibility and maintain a minimum flow to sustain suction.

Who this is for: The Ultimate Washer Sludge Scupper suits contractors, car-wash operators, facilities crews and property owners who need a rugged, low-cost way to move large volumes of contaminated or sediment-laden water without buying or hauling a separate trash pump. It’s ideal when you have a pressure washer with a compatible quick-connect outlet and want fast, maintenance-light dewatering for pits, drains, basements, ponds and mobile tank refills.