Part Number: LWS2020E
Category: Pressure Washer Pumps → Triplex Pumps → Electric Pressure Washer Pumps
Type: Comet LWS2020E Electric Pressure Washer Pump – 2.2 GPM 2000 PSI 1750 RPM 5/8" Electric Flange

The Comet LWS2020E Electric Pressure Washer Pump (Part #LWS2020E) is a genuine OEM triplex plunger pump engineered for commercial and light industrial electric pressure washer systems. Manufactured by Comet Pumps, this heavy-duty pump delivers 2.2 GPM at 2,000 PSI, making it ideal for equipment cleaning, vehicle washing, facility maintenance, food processing, and general commercial wash-down applications.

Key Features & Benefits

• Genuine Comet OEM triplex pressure washer pump
• Part Number: LWS2020E
• Heavy-duty triplex plunger design
• Delivers up to 2.2 GPM at 2,000 PSI
• Designed for electric pressure washer systems
• Low-speed 1,750 RPM operation for extended service life
• 5/8-inch hollow shaft with NEMA 56C electric flange
• 15 mm ceramic plungers
• Compatible with 3 BHP electric motors
• 3/8" FPT water inlet
• 3/8" FPT high-pressure outlet
• OEM-quality construction for commercial applications

Technical Specifications

Part Number: LWS2020E

Pump Model: LWS2020E

Manufacturer: Comet Pumps

Product Type: Electric Triplex Pressure Washer Pump

Maximum Flow Rate: 2.2 GPM

Maximum Pressure: 2,000 PSI

Maximum Pump Speed: 1,750 RPM

Brake Horsepower (BHP): 3

Shaft Size: 5/8" Hollow Shaft

Mounting Style: NEMA 56C Electric Flange

Ceramic Plunger Size: 15 mm

Water Inlet: 3/8" FPT

High-Pressure Outlet: 3/8" FPT

Connection Size: 3/8" Inlet / 3/8" Outlet

Weight: 14 lbs

OEM Replacement: Yes

Compatible Applications

Designed for use with compatible electric pressure washer systems featuring:

• 5/8-inch hollow shaft electric motors
• NEMA 56C flange mounting
• 3 BHP electric motors
• 1,750 RPM motor applications
• Commercial pressure washers
• Industrial cleaning equipment
• Equipment replacement and repair projects
• OEM equipment installations

Always verify shaft size, flange configuration, motor horsepower, operating speed, and pressure/flow requirements before ordering.

Function of the Electric Pressure Washer Pump

The LWS2020E pump helps:

• Deliver up to 2.2 GPM of water flow
• Generate operating pressures up to 2,000 PSI
• Provide dependable continuous-duty cleaning performance
• Operate efficiently at low pump speeds
• Reduce heat buildup and internal wear
• Extend equipment service life

Its heavy-duty triplex plunger design provides smooth operation, excellent efficiency, and significantly longer service life than conventional axial cam pumps.

Common Signs Replacement Is Needed

Replace the pump if you notice:

• Reduced operating pressure
• Decreased water flow
• Water or oil leaks
• Excessive operating noise
• Cracked or damaged pump housing
• Excessive internal wear
• Loss of cleaning performance
• Pump failure during operation

Replacing a worn pump restores cleaning performance while minimizing equipment downtime.

Installation & Service Notes

• Disconnect electrical power before servicing.
• Relieve all system pressure.
• Verify compatibility with the 5/8-inch hollow shaft, NEMA 56C flange, motor horsepower, operating speed, and pressure requirements.
• Install the pump according to the manufacturer's specifications.
• Connect the 3/8" FPT inlet and 3/8" FPT outlet fittings.
• Fill the crankcase with the recommended pump oil before operation.
• Prime the pump with water before startup.
• Verify proper operation and inspect for leaks after installation.

Important: Never operate the pump without an adequate water supply. Running the pump dry can quickly damage the ceramic plungers, seals, and valves, significantly reducing pump service life.

Maintenance Recommendations

• Check the pump oil level regularly and change the oil according to Comet maintenance schedules.
• Inspect ceramic plungers, packings, water seals, valves, and fittings during routine maintenance.
• Maintain clean, filtered inlet water to minimize internal wear.
• Flush the pump after use when pumping dirty or corrosive water.
• Use only genuine OEM Comet replacement parts and approved lubricants to maintain optimum pump performance, reliability, and long service life.