Caleffi Saunier Duval Isofast Condens F 35 E Safety Valve Ref. 0020078632

Saunier Duval boilers compatible with reference 0020078632

Safety valve with reference 0020078632. 31 verified compatibilities: C24E and C24EO.

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. 0020078632 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 0020078632. 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 safety valve 0020078632 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 valve is continuously leaking water through the discharge pipe.

  Cause: The seat does not close completely, due to accumulated scale or wear of the mechanism.

  Measure the cold pressure in the circuit before changing it: if it is above the usual level, lower it and see if the dripping stops.

• 02

  It does not bleed or release pressure when it should.

  Cause: The mechanism can become stuck due to scale or corrosion if it hasn't been activated for a long time.

  With the cold system, try to operate the lever or the bleed plug to see if it releases water and closes again before replacing it.

• 03

  The opening mechanism is stiff and difficult to move.

  Cause: Limescale builds up on the shaft and seat when the valve goes a long time without being manually bled.

  Try moving it a couple of times carefully before declaring the part completely stuck.

• 04

  The boiler is losing pressure without any clear leak being visible.

  Cause: A small and intermittent drip from this gas valve can dry up between bleedings and leave no visible trace to the naked eye.

  Check for limescale or dry water marks just below the discharge outlet: that's where the trace usually remains even if it’s not dripping now.

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 safety valve 0020078632

Catalogue reference

0020078632

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

Data read on the part and in the manufacturer's documentation

What we have not been able to verify does not appear here.

Manufacturer

Caleffi

Reference

0020078632

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.