The ELBI HX2 is a compact 2‑litre stainless steel accumulator/expansion vessel designed for potable water systems and booster pump assemblies. It is offered under ELBI's HI-NOX/HX family and commonly listed with model code 022-640, making it ideal for small domestic booster sets, water hammer arresting and pressure smoothing applications.

Built for hygienic service, the HX2 uses a fixed bladder (butyl for the small sizes) suitable for drinking water and corrosion-resistant stainless steel construction. Retail listings and manufacturer documentation cite a maximum pressure rating of up to 10 bar with typical working pressures referenced around 8 bar, ensuring reliable performance in pressure boosting and circulation systems. The compact design helps reduce pump cycling (pump hunting) and delivers steady flow when system demand fluctuates.

• Brand: ELBI
• Model: HX2
• SKU / Code: 022-640
• Capacity: 2 L (litres)
• Material: Stainless steel (HI‑NOX series)
• Bladder: Fixed (butyl) – potable water compatible
• Connection: 1/2" BSP (typical listings for HX2 small model)
• Pressure: up to 10 bar (working approx. 8 bar)
• Dimensions (approx.): L 230 mm × D 146 mm; Weight ~1.0 kg