This pressure washer pump is a triplex plunger pump head with a brass manifold, an aluminium cooling housing and a built-in pressure relief valve. It is rated to 100bar and takes a 19mm motor shaft, so it can replace a worn pump on a car wash or cleaning machine driven by an electric motor.
Features and benefits:
- Brass pump head with a 59-1 cast brass cylinder body: resists rust and corrosion and is made for high pressure work
- Three plungers: balanced water supply with low vibration and an even spray, and ceramic plunger construction is shown on the maker's images
- Ribbed aluminium cooling housing: carries operating heat away so the pump can run for long periods
- Pressure relief and unloading valve included, with a red safety button: releases excess pressure to protect the pump body
- Standard motor flange with 70.7mm hole spacing: fits a range of electric motors, so check your motor flange before ordering
- Forged steel crankshaft, zinc alloy connecting rod and nitrided bearings: listed by the maker for load capacity and wear resistance
- Four model options: SJW14085, SJW14085-A, SJW14075-A and SJW14075-C: pick the one that matches your motor and the drawing shown
Applications:
- Replacing the pump on a car wash or commercial pressure washer
- Floor, wall and pipeline flushing in workshops and factories
- Outdoor building and engineering cleaning
- Agricultural spraying equipment with a matching motor
Note: Fill the pump body with pump oil before first use. Never run the pump dry for any length of time, as that scores the plungers. Clean the inlet filter regularly. Confirm the motor flange size and power before ordering, and do not exceed the rated pressure.
Product type: Triplex plunger pump head. Model options: SJW14085, SJW14085-A, SJW14075-A, SJW14075-C (choose in options). Shaft diameter: 19mm. Maximum pressure: 100bar. Drive mode: Electric motor. Speed (SJW14085-A): 2800rpm. Flange hole spacing: 70.7mm. Flange bolt circle: Ø100 and Ø115 shown on drawing. Pump head: Brass manifold, 59-1 cast brass cylinder body. Plungers: 3, ceramic type shown in maker images. Cooling housing: Ribbed aluminium. Safety: Built-in pressure relief and unloading valve with red button. Water ports: Threaded inlet and outlet. Crankcase: Cast ADC-12 aluminium alloy, anodised. Crankshaft: Forged steel, one-piece. Connecting rod: Zinc alloy. Bearings: Nitrided. Seals: NBR rubber oil seal with U-type clamp; cloth dust seal. Plunger material: Ceramic (stainless steel plunger also named in the listing). Housing length: Long housing to reduce vibration. Lubrication: Pump oil required in the pump body before use. Motor needed: Not included, match flange and shaft. Power: Pump head only, no mains plug. Q: What oil goes in a pressure washer pump? A: The seller says to fill the pump body with lubricating oil before use to reduce wear. Use a pump oil recommended for plunger pumps and keep the level topped up.. Q: How do I remove a pump from a pressure washer? A: Disconnect the water supply and outlet, then undo the bolts holding the pump to the motor flange and slide it off the shaft. Check that the new pump has the same 19mm shaft and 70.7mm flange spacing.. Q: Does this pump have an unloader valve? A: Yes, a pressure relief and unloading valve is built in, with a red safety button to release excess pressure.. Q: How do I repair a pressure washer pump? A: Common wear parts are the seals and plungers, and a worn pump head is often replaced as a unit. This head is described as compact and easy to disassemble for maintenance.. Q: What is the difference between the model options? A: The listing names SJW14085, SJW14085-A, SJW14075-A and SJW14075-C without a full comparison. The maker's images show the 19mm shaft and 70.7mm flange hole spacing, so check the drawing against your motor..