Part Number: 10001-01607
Category: Pressure Washer Parts → Pump Repair Kits → Check Valve Kits
Type: Comet 10001-01607 Valve Kit – OEM Replacement for LW, ZW, FW, HW & SW Pressure Washer Pumps

The Comet 10001-01607 Valve Kit (Comet Part #5025.0011.00) is a genuine OEM replacement check valve kit designed for servicing compatible Comet LW, ZW, FW, HW, and SW Series pressure washer pumps. This complete repair kit includes six preassembled valve assemblies with matching O-rings, providing everything needed to service all three cylinders and restore proper pump performance. 

Key Features & Benefits

• Genuine Comet OEM valve kit
• Part Number: 10001-01607
• Comet Part Number: 5025.0011.00
• Designed for LW, ZW, FW, HW, and SW Series pressure washer pumps
• Complete check valve replacement kit
• Includes six complete valve assemblies with O-rings
• Services all three pump cylinders
• Restores proper one-way water flow
• Helps eliminate pressure loss and pump surging
• Improves pump efficiency and cleaning performance
• Ideal for pump rebuilds and preventive maintenance
• OEM-quality fit and long service life

Technical Specifications

Part Number: 10001-01607

Comet Part Number: 5025.0011.00

Product Type: Check Valve Kit

Manufacturer: Comet

OEM Replacement: Yes

Compatible Pump Models

Designed for use with compatible Comet pressure washer pumps, including:

• LW Series
• ZW Series
• FW Series
• HW Series
• SW Series

Always verify your pump model before ordering.

Function of the Valve Kit

The valve kit helps:

• Control one-way water flow through the pump
• Maintain proper operating pressure
• Prevent water backflow
• Improve pump efficiency
• Restore consistent pressure and water flow
• Protect internal pump components from premature wear

Replacing worn valve assemblies helps restore pressure washer performance while maintaining smooth, reliable pump operation.

Common Signs Replacement Is Needed

Replace the valve kit if you notice:

• Reduced operating pressure
• Pulsating or inconsistent pressure
• Decreased water flow
• Pump surging
• Worn or damaged valve assemblies
• Damaged O-rings
• Pump rebuild or scheduled preventive maintenance

Replacing worn valves promptly helps prevent additional wear to the pump manifold and other internal components.

Installation & Service Notes

• Shut down the pressure washer and relieve all system pressure.
• Remove the pump manifold according to the manufacturer's service procedures.
• Carefully remove the existing valve assemblies and O-rings.
• Clean all valve bores and sealing surfaces thoroughly.
• Inspect the manifold for wear, corrosion, or debris.
• Install the new OEM valve assemblies and O-rings in the correct orientation.
• Reassemble the pump and verify proper pressure and leak-free operation.

Important: Inspect packings, water seals, ceramic plungers, and valve seats during service. Replacing related wear components at the same time helps maximize pump reliability and service life.

Maintenance Recommendations

• Inspect check valves during routine pump maintenance.
• Replace worn valve assemblies at the first signs of pressure loss or pump surging.
• Use clean, filtered inlet water to minimize valve wear.
• Flush the pump after use when handling dirty or corrosive water.
• Use only genuine OEM Comet replacement parts to maintain optimum pump performance, reliability, and long service life.