Service Kit - Sequential Thermostatic Cartridge and Wax Thermo-Element Chrome SAR00 - Winchester
Service Kit - Sequential Thermostatic Cartridge and Wax Thermo-Element Chrome SAR00 - Winchester
Service Kit - Sequential Thermostatic Cartridge and Wax Thermo-Element Chrome SAR00 - Winchester
Service Kit - Sequential Thermostatic Cartridge and Wax Thermo-Element Chrome SAR00 - Winchester
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Service Kit - Sequential Thermostatic Cartridge and Wax Thermo-Element Chrome SAR00 - Winchester

TA025
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This thermostatic cartridge assembly is for the ENKI Winchester or SAR00 Hudson Reed Ultra Finishing Group. 

Please inspect the technical diagram and the photos carefully to ensure this is the correct thermostatic cartridge you require.

The thermostatic cartridge for SAR00 is used on the following brands and models (but not restricted to these models):
- ENKI Winchester Sequential Mixer Valve (T50)
- Ultra Single Sequential Mixer Valve
- Ultra Exposed Sequential Thermostatic Shower Valve
- Ultra Concealed Sequential Thermostatic Shower Valve
- Ultra Sequential Thermostatic Shower Valve
- Ultra Exposed Sequential Thermostatic Shower Valve (150mm inlet pipe)
- Ultra Concealed Sequential Thermostatic Shower Valve (150mm inlet pipe)
- Ultra Rialto Concealed Thermostatic Sequential Valve
- Used on some Croydex models
- Hudson Reed A3380 Valve
- Bensham Edwardian exposed thermostatic shower valve MK2A etc.

If your thermostatic shower handle has become very stiff, or if the water coming out the bath or shower outlet is not constant in flow and temperature the thermostatic cartridge could be at fault. Try replacing the cartridge and the chances are it'll fix the problem.

Spare Part: Hudson Reed / Ultra Thermostatic Shower Cartridge SAR00
Installation: Push Fit

How to Change the Shower Cartridge

– Unscrew the shower valve handle.
– Slide the engraved plate and O-ring out.
– Remove the grommet.
– Remove the concealing plate (for concealed valves).
– Extract the push-fit cartridge.
– Grease all O-rings of the replacement SAR00 cartridge and install it in the valve body.
– Go through the steps backward to assemble the valve.

SAR00 Thermostatic Shower Cartridge Problems

The SAR00 thermostatic cartridge is a fundamental component of a Hudson Reed / Ultra mixer shower valve. It can last a long time but it can show initial signs of wearing out after some years. Below are issues relevant to shower cartridges.

Poor Water Flow
Minerals, grit and dirt that flows with the water are filtered by the cartridge. Residue builds up in and around the cartridge clogging it. If this is the case, SAR00 shower cartridge replacement can return water flow to normal.

Shower Temperature Problems
Valves having temperature regulation issues, such as getting too cold or too hot, fluctuates from hot to cold during the duration of a shower, or is stuck in only one temperature, is an indication the cartridge thermo-element is breaking down.

Dripping
Cartridges are equipped with O-rings to keep water from leaking. Abrasion, pinching, and years of using the shower valve will weaken the seals causing leaks. It may start small but eventually worsen if not immediately addressed. Another reason drips occur are cracks in the cartridge barrel allowing water to seep out.

The mentioned issues can be resolved by replacing the seals or the cartridge.

What is a Mixer Valve?
Shower mixers, or blending valves, combine hot and cold water to produce the water temperature demanded by the shower user. It is a thermostatic valve that takes hot water from a combination boiler or a hot water cylinder and mixes it with cold water. A lukewarm water temperature results from a 50/50 mix of hot and cold.

Water pressure to the shower will fluctuate when someone at home opens the kitchen tap or flushes the toilet. The cartridge in the mixer shower will maintain a stable temperature in spite of the fluctuation.