The ELBI AFV500 is a 500-litre vertical bladder pressure vessel / accumulator designed for potable water and booster pump systems. Built around a replaceable, food-grade EPDM bladder, this expansion tank keeps water and air fully separated to prevent corrosion and maintain system efficiency. It is CE certified and engineered for long service life in residential, commercial and light industrial pumping applications.

Key features

• Capacity: 500 litres (AFV500) — vertical design for compact floor footprint.
• Replaceable, alimentary-grade EPDM bladder for safe potable water use and extended lifecycle.
• Durable external finish — epoxy powder coating (standard blue) with a special solvent-based grey finish available for the 16-bar variant for enhanced weather resistance. ([termoidraulica.elbi.it]
• Pre-charged at the factory (typical factory pre-charge ~1.5 bar) to simplify installation; check and adjust air charge to match your pressure-switch settings.
• Robust welded steel construction, CE conformity and available working pressure options to suit common pump and hydrophore systems.
• Manufacturer SKU / part number: 022-622 (use for ordering and datasheet lookup).

Applications & benefits

Use the AFV500 as a pressure-maintenance accumulator, pump anti-short-cycling tank, or hydrophore in systems where stable water pressure, reduced pump wear, and quieter operation are priorities. Typical installations include booster pump stations, well systems, commercial plumbing, irrigation, and domestic potable-water pressurization.

For reliable performance choose the ELBI AFV series when you need a corrosion-resistant, maintenance-friendly pressure vessel that integrates with standard pressure switches and pump controls. Verify working pressure requirements (8/10/16 bar options exist across the AF range) and consult the product datasheet for specific installation and warranty details.