Saunier Duval Isofast Angled Filling Valve Ref. S1007000

Saunier Duval boilers compatible with reference S1007000

Filling key with reference S1007000. 23 verified compatibilities: C24E and C25E.

Proven compatibility

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. S1007000 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.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference S1007000. If it is not visible, do not identify the part from its shape alone.
2. Check the full boiler model on its data plate and look for it in the model associations on this page.
3. Compare the connections and physical body with the original part before installation.
4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Symptoms and faults that the filling valve S1007000 resolves.

The filling valve allows water to refill the heating circuit. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  The pressure needs to be refilled more frequently than usual, even though no leaks are visible in the boiler.

  Cause: An angled filling valve that does not seat properly can allow water to slowly pass into the system without visible dripping.

  Close the valve tightly and check with a dry cloth around the body for any moisture after a few hours.

• 02

  The blue knob is difficult to turn, it's stiff or gets stuck halfway without fully opening or closing.

  Cause: Limescale and age can seize the internal mechanism of this type of angle valve, which is more sensitive to limescale buildup due to its design.

  Try gently turning the knob in both directions; if it doesn't give at all, avoid forcing it to prevent breaking the plastic body.

• 03

  Water is leaking from the area where the plastic body joins the metal fitting.

  Cause: The joint between the plastic and brass is the weakest point of this model, and with thermal expansion, it may lose its seal.

  Gently tighten that joint if the assembly allows it and check if the leak stops before considering the entire piece broken.

• 04

  After refilling, the pressure in the circuit does not increase even though it seems that some water is entering.

  Cause: The angle valve might be allowing water to pass at such a low rate that it doesn't compensate for what the circuit loses elsewhere.

  Check air vents, radiators, and other valves in the circuit in case the actual leak is elsewhere and not at this valve.

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 filling key Saunier Duval S1007000

Catalogue reference

S1007000

Brand

Saunier Duval

Type of part

Filling valves

Units in stock

5 units

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 Isofast F30E Manual (PDF)Document © Saunier Duval, provided as a technical reference.