Junkers Euromaxx Pressure Safety Valve ZWC 28 32 1MFA 23 Ref. 8716771426

Junkers boilers compatible with reference 8716771426

Safety valve with reference 8716771426. Seven confirmed compatibilities: ZWC 24-1 MFA 23 and ZWC 24-1 MF2A.

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 ref. 8716771426 is the part 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 8716771426. 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 8716771426

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 water from the discharge outlet even though the boiler is cold and at rest.

  Cause: The seat doesn't close completely, often because lime or a particle gets between the shutter and the seat.

  Operate the bleed lever a couple of times to flush out the dirt and check if the dripping stops before replacing it.

• 02

  The valve starts to release water every time the boiler heats up, even though the pressure seems correct when cold.

  Cause: If the expansion vessel has lost its charge, it won't cushion the expansion of the water, and the pressure will suddenly rise until the valve activates.

  Check the pre-charge of the expansion vessel with the system cold before considering the valve as faulty.

• 03

  After manually moving the bleed lever to check it, the valve starts leaking and does not close properly again.

  Cause: Manual operation can dislodge a particle that gets trapped in the seat and prevents a tight seal.

  Repeat opening and closing the lever several times carefully to try to dislodge the dirt.

• 04

  The valve body is rusted, and the lever is difficult to move; it hardly gives way.

  Cause: Corrosion or internal deposits can seize the mechanism and leave it unable to actuate if the pressure rises.

  Try moving the lever carefully; if it doesn't give or makes a scraping noise, don't force it and keep in mind that it may not be protecting the installation.

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 Junkers safety valve 8716771426

Catalogue reference

8716771426

Uniclima internal SKU

VSJZWC28/32

Brand

Junkers

Type of part

Safety valves

Units in stock

3 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.

Color of the lid

Black

Manuals and technical documentation

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

• Junkers ZWC 24-1 MFA 23 manual (PDF) Document © Junkers, provided as a technical reference.