Pressure Gauge 0-4 Bar for ZR/ZWR Boilers - Ref. 87172080520

Junkers boilers compatible with reference 87172080520

Pressure gauge with reference 87172080520. 16 verified compatibilities: ZWR 24-3 AE/KE and ZWR 18-3 AE/KE.

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 the reference 87172080520 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 87172080520. 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 manometer 87172080520 solves.

The manometer shows the pressure of the boiler circuit. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  The pressure gauge does not indicate pressure or the needle is at zero even though the system is charged.

  Cause: The internal mechanism has jammed or the capillary has lost hydraulic connection with the circuit.

  Bleed a radiator and refill it; if the needle does not move at any time, the problem is with the pressure gauge, not with the actual pressure.

• 02

  The needle gets stuck in a fixed position and does not respond to pressure changes.

  Cause: The copper capillary may be bent or crushed at some point, preventing the pressure from reaching the mechanism.

  Visually inspect the entire path of the capillary for any bends or crushes before replacing the complete part.

• 03

  There is a constant drip or moisture in the area of the capillary or the brass fitting.

  Cause: The soldering of the capillary to the fitting has degraded over time and has lost its tightness.

  Dry the area well and observe for a few minutes with the boiler under pressure to accurately locate the point of the leak.

• 04

  The reading on the manometer does not match the pressure you expect after filling the circuit.

  Cause: An internal misaligned mechanism causes the gauge to display a pressure different from the actual one, even though the capillary is intact.

  Note how much you fill and compare it with what the gauge indicates; if the discrepancy is constant, suspect the part before 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.

Junkers pressure gauge 87172080520

Catalogue reference

87172080520

Brand

Junkers

Type of part

Pressure gauges & aquastats

Units in stock

5 units

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.

Pressure range

0-4 bar

Connection

Copper capillary soldered to brass fitting