Zilmet OEM-PRO Carbon Steel Heating Expansion Vessel – 8 Litre (3/8" BSP)
Durable Carbon Steel Construction | 8 Litre Capacity | 3/8" BSP Connection | Designed for Heating Systems
The Zilmet OEM-PRO 8 Litre Heating Expansion Vessel is engineered to deliver dependable pressure regulation and thermal expansion control within sealed heating systems. Manufactured from robust carbon steel, this vessel is built to withstand the continuous demands of central heating applications while maintaining long-term structural integrity.
With an 8-litre capacity and factory pre-charge, it ensures safe accommodation of water expansion as temperatures fluctuate protecting boilers, pipework, and system components from excessive pressure build-up.
Why Choose the Zilmet OEM-PRO Expansion Vessel?
✔ Reliable Pressure Management – Controls thermal expansion to maintain system stability.
✔ Heavy-Duty Carbon Steel Shell – Durable construction for long service life.
✔ Factory Pre-Charged – Pre-set at 1 Bar (±20%) for simplified installation.
✔ Compact 8 Litre Capacity – Suitable for small to medium heating systems.
✔ Trusted Manufacturer – Zilmet is a leading European expansion vessel specialist.
Key Specifications
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Product Type: OEM-PRO Heating Expansion Vessel
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Capacity: 8 Litres
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Material: Carbon Steel
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Maximum Working Pressure (Pmax): 3 Bar
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Pre-Charge Pressure: 1 Bar (Factory Set ±20%)
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Connection: 3/8" G BSP
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Drawing Reference: 537/L
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Manufacturer Warranty: 1 Year
Technical Overview
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Designed for sealed central heating systems
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Accommodates water expansion during heating cycles
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Protects system components from pressure fluctuations
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Compact design for flexible installation
Installation Notes
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Connection size: 3/8" BSP
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Ensure system pressure settings are checked prior to installation
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Pre-charge may require adjustment depending on system requirements
Important Lead Time Notice
⚠ Please note: This product currently has an estimated lead time of 6–8 weeks.
We recommend confirming availability prior to ordering if required for time-sensitive installations.
What’s in the Box?
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1 × Zilmet OEM-PRO 8 Litre Expansion Vessel
