American Plumbing Partsmaster 9819046 Pressure Balancing Cartridge

Product Description

The AMERICAN PLUMBING PARTSMASTER 9819046 is a single-lever pressure balance cartridge with a 40mm body diameter designed for use in pressure-balancing mixing valves. This cartridge maintains a consistent water temperature by equalizing hot and cold water supply pressures, which helps prevent sudden temperature shifts during use. It is a direct-replacement component typically installed by licensed plumbers during valve repair or routine maintenance on shower and tub-shower fixtures.

This cartridge is suited for residential and light commercial plumbing applications where single-lever pressure balance valves are in service. It is most commonly replaced during faucet rebuilds when the valve body shows signs of temperature inconsistency, hard operation, or internal wear. The 40mm form factor is a common size found in a range of pressure-balancing trim valves used in shower and tub-shower installations.

Key Features

• 40mm cartridge body diameter for compatibility with standard pressure balance valve housings
• Single-lever design controls both volume and temperature in one motion
• Pressure-balancing function equalizes hot and cold supply pressures to maintain set water temperature
• Designed as a replacement cartridge for valve repair and rebuild applications

Compatibility

Designed as an OEM-style replacement cartridge for single-lever pressure balance mixing valves with a 40mm cartridge seat. No specific model compatibility data was provided by the manufacturer for this listing.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the water supply and depressurize the line before removing the existing cartridge. Note the orientation of the old cartridge before extraction, as incorrect reinstallation can reverse hot and cold flow. Inspect the valve body seat for wear or debris before inserting the new cartridge.