Saunier Duval Isofast Check Valve (Non-return) - Ref. S1007200
The Saunier Duval Isofast check valve (non-return) is a safety component that allows the release of water when the circuit pressure exceeds the usual limit of 3 bar. When it fails, you will notice continuous dripping or that it does not discharge when it should. This valve is compatible with boilers from the Thematek range, such as the Thematek F 24 E and the Isomax, including models like the Isomax C 30, among others. It should be replaced when these symptoms are detected to avoid greater issues in the operation of the boiler.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference S1007200
Safety valve with reference S1007200. Seven confirmed compatibilities: Thematek F 24 E and Thematek C 24 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Thematek F 24 E | Thematek | Contrasted |
| Saunier Duval Thematek C 24 E | Thematek | Contrasted |
| Saunier Duval Thematek S F 24 E | Thematek | Contrasted |
| Saunier Duval Thematek S C 24 E | Thematek | Contrasted |
| Saunier Duval Thematek C 24 EO BT | Thematek | Contrasted |
| Saunier Duval Isomax C 30 | Isomax | Contrasted |
| Saunier Duval Isomax F 35 H-MOD | Isomax | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if ref. S1007200 is the part for your boiler
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference S1007200. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the safety valve S1007200 resolves.
The safety valve releases pressure when the circuit exceeds its setting. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The water flows back in the circuit when the boiler is turned off.
Cause: This can occur if the check valve is damaged or not functioning properly.
Check if the check valve is stuck or if there are any leaks. If it is in poor condition, you should replace it.
- 02
There are noises of knocks or vibrations in the pipe due to the water flow in the opposite direction.
Cause: This may be caused by a fault in the check valve that allows reverse flow.
Check the check valve to ensure that it closes properly and does not allow water to flow in the undesired direction.
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Data sheet for the Saunier Duval S1007200 safety valve.
- Catalogue reference
- S1007200
- Brand
- Saunier Duval
- Type of part
- Safety valves
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Thematek S F 24 E Manual (PDF)Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the safety valve S1007200
Is this Saunier Duval Isofast check valve – Ref. S1007200 compatible with the Thematek range?
What is the function of the check valve in Saunier Duval boilers?
When should I replace the check valve in my Isomax boiler?
How many models are compatible with this check valve?
What is the reference for this check valve?
Are there documented fault codes for this check valve?
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