3 Bar Metal Safety Valve Saunier Duval Isofast F 35 EA Ref. 05722800

Saunier Duval boilers compatible with reference 05722800

Safety valve with reference 05722800. 22 verified compatibilities: Isofast C 24 EV and Isofast C 28 E.

Verified 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 the part number 05722800 is the one for your boiler.

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference 05722800. 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 that require diagnosis in the safety valve 05722800

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 leaking after bleeding the circuit.

  Cause: The closure does not seal properly because something is preventing the shutter from returning to its position.

  Bleed several times and wait between each bleed: if it continues to drip, the seat is not sealing.

• 02

  The valve is leaking water more often than usual, even without temperature changes.

  Cause: A damaged spring or a worn seat causes the valve to open prematurely.

  Measure the circuit pressure in cold conditions for a few days: if the valve activates at pressures that were previously normal, it has lost calibration.

• 03

  There is a trace of dry scale under the discharge pipe, although it is not dripping now.

  Cause: This indicates previous leaks, typical of a seat that fails before dripping continuously.

  Check if the limescale trace comes from the gas valve or the connection fitting to avoid replacing the wrong part.

• 04

  The brass body has corrosion or greenish stains on the thread.

  Cause: The hard water has passed through a joint that no longer seals, leaving marks on the metal.

  Dry the area and check after some time: if humidity reappears without having bled, the leak is active.

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 05722800

Catalogue reference

05722800

Uniclima internal SKU

VSMIF35EA

Brand

Saunier Duval

Type of part

Safety valves

Units in stock

7 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days

Part data and available documentation

Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.

Body

Brass

Connection / thread

1/2"

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

• Saunier Duval Isotwin C 28 EA manual (PDF) Document © Saunier Duval, provided as a technical reference.