Kingston Brass KSRP3891C Cartridge 35mm 2-port

Product Description

The Kingston Brass KSRP3891C is a single-lever ceramic disc cartridge designed for use in faucet valves and mixing valve bodies. With a 35mm cartridge diameter and a 57mm square stem configuration, this unit controls water flow and temperature in a single-handle faucet assembly. The 2-port design routes both hot and cold supply inlets through a single rotating ceramic disc mechanism. Plumbers and service technicians install this cartridge as a direct replacement when a faucet develops drips, stiff operation, or loss of temperature control.

This cartridge fits single-handle faucet bodies that accept a 35mm platform with a 57mm square stem interface. It is suited for residential and light commercial plumbing applications, including lavatory, kitchen, and bar faucets. The 2-port configuration is standard in single-lever mixing faucets where both hot and cold water are combined before exiting the spout. When an existing cartridge wears out, this unit restores proper flow regulation and shut-off performance without replacing the entire faucet body.

Key Features

• 35mm cartridge diameter matches standard single-lever faucet valve platforms
• 57mm square stem for positive engagement with handle hardware
• 2-port ceramic disc design controls both hot and cold inlet flow
• Direct drop-in replacement restores drip-free operation and smooth handle movement
• Compact format fits residential and light commercial faucet bodies

Compatibility

Designed as an OEM-style replacement cartridge for single-handle faucets that accept a 35mm 2-port ceramic disc cartridge with a 57mm square stem.

Installation Notes

A licensed plumber or qualified service technician should shut off the hot and cold supply stops and relieve line pressure before removing the existing cartridge. The handle, retaining clip, and any bonnet nut must be removed in sequence before the cartridge can be extracted. Orientation of the new cartridge matters for correct hot and cold alignment, so note the inlet markings before insertion. Work should comply with applicable local plumbing codes and the International Plumbing Code where adopted.

Technical Specifications

• Cartridge Diameter: 35mm
• Stem Length: 57mm
• Stem Shape: Square
• Port Count: 2
• UPC Code: 0015382

Standard Information

• Brand: Kingston Brass
• Manufacturer Part Number: KSRP3891C