Filling Key Non-Return Check Valve Vaillant VMW ES 24 282 5 R1 Ref. 0014674

Vaillant boilers compatible with reference 0014674

Safety valve with reference 0014674. 16 verified compatibilities: VMW 24/280-5 and VMW 24/282-5.

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. 0014674 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 0014674. 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 0014674 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

  You have to refill the boiler pressure more frequently than usual.

  Cause: If it functions as a filling valve, a defective seal allows water to escape into the network even when it's closed.

  Close the valve tightly and observe the pressure gauge for a couple of hours without touching anything; if it continues to drop, the leak is in this area.

• 02

  Water is coming out of a small tube or an outlet near this part, especially when the boiler is heating strongly.

  Cause: If its function is for safety, it releases water when the circuit pressure rises above normal.

  Check if the dripping coincides with the rise in water temperature and the pressure gauge; that indicates a pressure problem, not just an issue with the part.

• 03

  It is not clear if this part operates when the pressure increases or if it only serves to refill.

  Cause: The brass body has no markings or screen printing, so its function can only be confirmed by seeing it mounted in the boiler.

  Take a photo of the part installed in your boiler and compare the shape and the circuit point with this reference.

• 04

  After refilling, the pressure doesn't hold and drops again immediately.

  Cause: If the non-return valve does not close properly, the water flows back instead of staying in the circuit.

  Fill up to the indicated pressure, close it, and monitor the pressure gauge for the first 10-15 minutes to see if the drop is rapid.

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 safety valve Vaillant 0014674

Catalogue reference

0014674

Brand

Vaillant

Type of part

Safety valves

Units in stock

3 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days

Manuals and technical documentation

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

• Vaillant VMW 24/282-5 Manual (PDF)Document © Vaillant, provided as a technical reference.