

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The SYMMONS INDUSTRIES KN-4-EXT is a replacement cartridge designed for use in faucet or valve assemblies where precise flow and temperature control depend on a functioning internal cartridge. Cartridges serve as the core metering component inside the valve body, regulating water flow rate and mix ratio when actuated by the handle. This part is installed by licensed plumbers and experienced service technicians performing repair or maintenance on compatible valve systems. It is a direct replacement unit intended to restore original valve performance without full valve body replacement.
This cartridge is suited for repair applications in residential and light commercial plumbing systems. It is typically installed during routine service calls when an existing valve exhibits dripping, stiff handle operation, or failure to hold a set temperature. Replacement cartridges of this type are a standard stock item for plumbing contractors handling faucet and valve repair work across a range of fixture types.
Designed as an OEM-style replacement cartridge for compatible SYMMONS INDUSTRIES valve assemblies. Refer to the valve model documentation or SYMMONS INDUSTRIES technical resources to confirm fitment for a specific valve series before ordering.
Cartridge replacement should be performed by a licensed plumber in accordance with applicable local plumbing codes such as the IPC. Always shut off the water supply to the fixture and relieve line pressure before disassembling the valve body. Remove the handle and any trim components to access the cartridge seat, and inspect the valve body for scale or debris before installing the new cartridge. Do not force the cartridge into position, as improper seating can cause leaks or damage the valve body.
Thanks for subscribing!
This email has been registered!