Zilmet Hydro Pro 35L Potable Expansion Vessel

The Zilmet Hydro Pro 35L Potable Expansion Vessel is designed for domestic hot water and potable water systems. It accommodates thermal expansion to help maintain stable system pressure, with a compact wall-mounted format suited to installation alongside water heaters, boilers and pump systems.

Its fixed potable-water-rated butyl membrane is designed to minimise areas where water can stagnate. The MIG-welded carbon steel shell has a durable epoxy powder-coated finish, making this a practical choice for hot water expansion control and applications where protection against water hammer is required.

Key Features

• 35 litre capacity for potable and domestic hot water systems
• Designed for potable water applications
• Fixed butyl membrane designed to minimise water stagnation
• 10 bar maximum working pressure
• 2 bar factory pre-charge
• MIG-welded carbon steel vessel construction
• Durable epoxy powder-coated external finish
• 1" BSP connection
• Suitable for water heaters, boilers and pump systems
• Helps manage thermal expansion and water hammer
• Tested and certified to the Pressure Equipment Directive 2014/68/EU
• Backed by a 5-year warranty

Typical Applications

The Zilmet Hydro Pro 35L is suitable for:

• Domestic hot water systems
• Hot water cylinders and water heaters
• Boiler systems
• Pump and pressurised water systems
• Potable water installations
• Systems requiring thermal expansion control
• Applications where water hammer protection is required

Technical Specifications