Valve for Controlling the Cooling Loop

Product detailed description

Valve for controlling the cooling loop – WATTS STS20 S - 97°C

Frequently asked questions

• How do I check that „Valve for Controlling the Cooling Loop“ fits my exact appliance? The most reliable way is to compare the exact type/catalogue designation on your appliance's (boiler, storage tank, water heater) rating plate with the compatibility stated directly in this product's name and in its technical parameters above. If in doubt, send us the exact type designation of your appliance (including the serial number, if available) - we'll gladly verify compatibility for you.
• Why is it important to use an original/compatible part rather than a universal replacement? Parts such as seals, sensors or safety components (safety valves, thermal fuses) are typically dimensioned precisely for the parameters of a specific appliance (pressure, temperature, sensor electrical resistance) - the wrong part can reduce functionality, cause leaks, or in the case of safety components, create a genuine safety risk.
• Does this part need to be installed by a professional? For simpler mechanical parts (e.g. seals, covers, small accessories with no connection to electricity, gas or the pressurised part), a handy DIY-er can usually manage the replacement after disconnecting the appliance from power and supply lines. However, for any intervention in the gas, electrical or pressurised part of the appliance (e.g. sensors directly in the combustion chamber, safety valves, electrical modules), we always recommend a service technician - especially since such work could affect the validity of the appliance's warranty.
• How do I recognise that this part is worn and needs replacing? Common signs include visible wear/cracking (for seals and rubber parts), water or flue gas leaks at the part, an error message on the control display (for sensors and electronic modules), or a clearly reduced function of the appliance (e.g. irregular combustion for burner parts). If in doubt, it's safest to have the condition assessed by a service technician during the regular annual inspection.
• Is it worth keeping this part at home as a spare? For parts that are subject to regular wear (seals, fuses, small mechanical components) and whose failure would mean an interruption to heating or hot water, keeping a spare on hand is a sensible precaution - especially for older appliances, for which it can be harder to source a part quickly.