Zilmet ULTRA-PRO Horizontal High Pressure Potable Expansion Vessel, 24 Litre – Reliable Expansion for Pressurised Potable Systems

The Zilmet ULTRA-PRO 24 Litre Horizontal Potable Expansion Vessel is specifically designed for use in pressurised potable water systems such as unvented hot water cylinders and booster sets. Built with a high-grade carbon steel shell and a non-toxic, food-grade internal membrane, this vessel safely absorbs pressure fluctuations, helping maintain system stability and protect components from overpressure damage.

Engineered for horizontal installation, the ULTRA-PRO range is WRAS approved and trusted across residential, commercial, and industrial installations.

Why Choose Zilmet ULTRA-PRO Horizontal 24L Vessel?

✔️ 24-litre capacity – Suitable for medium-sized potable water systems
✔️ Horizontal orientation – Ideal for limited vertical space or specific system designs
✔️ WRAS approved – Certified safe for use with drinking water
✔️ Food-grade membrane – Non-toxic and anti-bacterial
✔️ Durable carbon steel shell – Corrosion-resistant and long-lasting
✔️ High pressure rated – Suitable for demanding systems
✔️ Trusted brand – Zilmet is a global leader in expansion vessels

Key Features

• Designed for potable (drinking) water systems

• Horizontal mounting for flexible installation

• High-grade butyl diaphragm – food-safe and replaceable

• Carbon steel outer shell with corrosion-resistant coating

• Pre-charged air chamber to manage thermal expansion

• Long service life with minimal maintenance

• Suitable for unvented cylinders, booster sets, and water heaters

Key Specifications

• Brand: Zilmet

• Model: ULTRA-PRO Horizontal

• Product Type: Potable Expansion Vessel

• Capacity: 24 Litres

• Orientation: Horizontal

• Material: Carbon steel shell, butyl food-grade membrane

• Connection: Typically 3/4" or 1" BSP (check model-specific details)

• Pre-Charge Pressure: Approx. 3.5 bar (adjustable)

• Maximum Working Pressure: Usually up to 10 bar

• Approval: WRAS certified for potable water

• Warranty: Manufacturer’s standard warranty

What’s Included?

• 1 x Zilmet ULTRA-PRO Horizontal Potable Expansion Vessel – 24 Litre

• Installation and maintenance instructions (if supplied)

• Mounting feet or brackets (model dependent)

✨ Safe, hygienic, and robust, the Zilmet ULTRA-PRO 24L Horizontal Potable Expansion Vessel is a smart and reliable choice for stabilising pressure in clean water systems where safety and compliance are essential.