Önaysan 6 L 3/8" Bracket-Mounted Combi Boiler Expansion Vessel - Worcester, Bosch, Vokera, Greenstar Compatible

The Önaysan 6 L 3/8" Bracket-Mounted Combi Boiler Expansion Vessel is a high-quality expansion vessel compatible with Worcester, Bosch, Vokera and Greenstar combi boiler models. It balances pressure in sealed heating systems, ensuring reliable and stable system operation.

Product Features

• Capacity: 6 Liters
• Connection Size: 3/8" (G3/8)
• Pressure Rating: Maximum 4.5 bar
• Working Pressure: 3 bar
• Pre-Charge Pressure: 0.75 + 0.2 bar
• Operating Temperature: -10°C / +90°C
• Mounting: Bracket design
• Standard: EN 13831

Applications

The Önaysan 6 L expansion vessel balances pressure fluctuations in combi boiler systems, extending the life of the installation. It is fully compatible with Worcester, Bosch, Vokera and Greenstar combi boiler models.

Advantages

• Extends combi boiler life by preventing pressure fluctuations.
• Offers high temperature and pressure resistance.
• Bracket design for easy installation.
• High-quality materials and a durable body.

Installation Notes

During installation, make sure the pre-charge pressure of the expansion vessel matches the system pressure. A pressure check every six months is recommended.

Frequently Asked Questions

What does a bracket-mounted combi boiler expansion vessel do?

It balances pressure fluctuations in sealed heating systems, extending the life of the installation. Its bracket design makes installation easier.

Which combi boiler brands is the Önaysan 6 L 3/8" expansion vessel compatible with?

It is compatible with Worcester, Bosch, Vokera and Greenstar combi boilers.

What are the connection size and capacity of this expansion vessel?

Its connection size is 3/8" (G3/8) and its capacity is 6 liters. Its working pressure is 3 bar, its maximum pressure rating is 4.5 bar, and it is manufactured to the EN 13831 standard.

What should be considered when installing the expansion vessel?

During installation, make sure the pre-charge pressure of the vessel matches the system pressure. A pressure check every six months is also recommended.

Can I buy regularly with an invoice as a service company/technician?

Yes, all our sales are invoiced. All orders, including those from service companies and technicians, are placed directly through our website.

How do I track my shipment after ordering?

Your shipment tracking number is sent to your e-mail and phone after ordering; you can follow its status in the “Where Is My Shipment?” section.

Can I return or exchange the product?

Yes. Under Consumer Protection Law No. 6502 you have the right of withdrawal/return within 14 days of delivery. To avoid ordering the wrong model, we recommend that you verify compatibility before ordering. Details are on our “Delivery, Returns and Exchanges” page.

What payment and instalment options are available?

You can pay by debit/credit card and Tosla, and take advantage of instalment/credit options through Fibabanka and Akbank. Current options are listed on our “Payment Options” page.

Where is Yedepa located and how is delivery made?

Yedepa is an e-commerce site; orders are placed through yedepa.com and shipped to your address by courier from our warehouses across Turkey and from our contracted suppliers. Our head office is at Cennet Mah. 2. Yavuz Selim Cad. No:68/A, Küçükçekmece / İstanbul.