Straight Filling Key Saunier Duval Isotwin F25 - 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 in the circuit gradually decreases, and it needs to be replenished frequently.

  Cause: The valve allows a small flow of water to pass through constantly because it does not close properly.

  Close the valve completely and observe the pressure gauge for a couple of days; if it continues to drop, confirm the closure fault.

• 02

  You notice moisture or drops on the body of the valve or in the area of the fitting.

  Cause: The internal sealing of the body has been lost, which is common in plastic parts over time.

  Check that the fitting is properly tightened; a leak from a loose thread can be fixed without replacing the part.

• 03

  The blue knob is broken, cracked, or turns without any effect.

  Cause: The plastic shaft that connects the knob to the opening mechanism has broken.

  Hold the body with one hand and turn the knob; if it spins freely without transmitting force to the mechanism, the shaft is broken.

• 04

  The valve is seized and does not allow opening or closing the water flow.

  Cause: Sediments in the circuit have blocked the internal mechanism.

  Apply a gentle movement in both directions before forcing; if it does not respond, the blockage is total.

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 F25 Condens Manual (PDF)Document © Saunier Duval, provided as a technical reference.