Thermostatic Valve Cartridge

What is this?

This is a high-precision thermostatic valve cartridge designed for tub and shower systems. It is the primary internal component responsible for mixing hot and cold water to maintain a specific, user-defined temperature.

What does it do?

• Constant Temperature Control: Unlike standard cartridges, this thermostatic unit automatically adjusts the intake of hot and cold water to keep the output temperature stable within +/- 3°F, even when water pressure fluctuates elsewhere in the building.

• Scald Prevention: It features a safety mechanism that reacts almost instantly to a loss of cold water supply by shutting down the hot water flow, protecting the user from accidental burns.

• Precision Engineering: Crafted with a heavy-duty brass body, this cartridge is built to withstand high temperatures and resist the mineral buildup that can cause standard valves to stick or fail.

• Versatile Application: While primarily used in high-end shower systems, this 34mm cartridge is also found in specialized bidet and lavatory fixtures that require precise temperature regulation.

Will it fit my needs?

This cartridge is approximately 4 inches in length and features a 20-point spline (the "teeth" where the handle attaches). It is a common replacement part for various imported and designer valve bodies, including those used in specialized kitchen and bath fixtures. If your shower temperature is drifting or the handle has become difficult to adjust, this thermostatic core is the required professional repair part.

What comes in the box?

• (1) Thermostatic Valve Cartridge

• Integrated O-Rings and Seals