How do I know if this expansion vessel is for my boiler?

Verify the reference 5183726 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Sime part.

The expansion vessel absorbs the expansion of water when heated.

Does the pressure rise significantly when heating, or does the safety valve trip?

It usually indicates the expansion vessel is discharged.

Which models is it suitable for?

Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.

Installation and recommendations

Check and recharge the air pre-charge of the expansion vessel.

What does refurbished mean and what coverage does it have?

Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

RefurbishedSime Expansion vessels

Expansion Vessel Sime Metropolis H25BF Ref. 5183726

Name: Expansion Vessel Sime Metropolis H25BF Ref. 5183726
Brand: Sime
SKU: VSSIH25BF
Price: 45 EUR
Availability: InStock

45 €VAT includedIn stock · 5 units

Expansion vessel: refurbished spare part that absorbs the expansion of water when heated. Useful if the pressure rises significantly when heating or if the safety valve is triggered. Compatible with Metropolis DGT 25 BF, Metropolis DGT 25 OF, Metropolis DGT 30 BF (ref. 5183726). Includes a one-year warranty and delivery within 2–4 working days in the EU.

Consult via WhatsApp

Not sure if it's your part? Send us a photo of the screen printing via WhatsApp and we'll confirm compatibility before you purchase.

Delivery in 2–4 working days

1-year warranty

14-day return

Technical support

Key Data

Reference: 5183726
Brand: Sime
Type of part: Expansion vessels
Available units: 5 units in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

The same part (ref. 5183726) equips these models. Verified compatibility; check the reference before purchasing.

Sime

Metropolis DGT 25 BF
Metropolis DGT 25 OF
Metropolis DGT 30 BF
Metropolis Digito 25C
Metropolis Digito 25V
Metropolis Digito 30V
Ecomfort Plus 25 HE-EV
Ecomfort Plus 30 HE-EV
Brava DGT-HE 12T
Brava DGT-HE 25
Brava DGT-HE 30
Brava DGT-HE 35
Format DGT 25 BF
Format GPL DGT 25 BF
Format GPL DGT 30 BF
Format MET DGT 25 BF
Format MET DGT 30 BF
Format Low NOx 25 BF

How do I know if this expansion vessel is for my boiler?: Verify the reference 5183726 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Sime part.
What is it used for?: The expansion vessel absorbs the expansion of water when heated.
Does the pressure rise significantly when heating, or does the safety valve trip?: It usually indicates the expansion vessel is discharged.
Which models is it suitable for?: Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations: Check and recharge the air pre-charge of the expansion vessel.
What does refurbished mean and what coverage does it have?: Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Expansion Vessel Sime Metropolis H25BF Ref. 5183726

Key Data

Sime

Spare Parts Related Boiler Metropolis H25BF