Flamco - 50 Ltr - Airfix P Expansion Vessel - 8 Bar

Maintain potable water hygiene and stable pressure with the Flamco Airfix A flow-through expansion vessel for mains-fed potable and fresh-water systems.

For use in potable water, or fresh-water installations.

The Airfix A expansion vessels operate in such a way that the water flows right through and they are continuously flushed with fresh water from the mains.

This prevents tepid, stagnant water from collecting in the vessel in which bacterial growth could occur.

Therefore, users can be assured of high quality potable water.

Applying an Airfix A expansion vessel to a water heater prevents the opening of the safety group or safety valve each time the potable water is heated.

A synthetic flow-through device installed in a standard T-piece (not included) diverts part of the line flow through the vessel to prevent stagnation. This reduces nuisance safety-valve lift on water heaters and avoids waste, while keeping water continuously refreshed.

• Flow-through design helps suppress bacterial growth
• Protects safety devices by reducing valve lift and leakage risk
• Taste/odour neutral butyl diaphragm for potable use
• Corrosion-resistant internal coatings on water and nitrogen sides

Factory nitrogen pre-charge supports long-term pressure stability. Internationally approved and certified. Compatible with Airfixcontrol for quick annual pre-charge checks.

Key Product Features

• Application: potable and fresh-water installations (domestic/commercial)
• Operation: partial-diversion flow-through via synthetic insert; requires a standard T-piece (not supplied)
• Hygiene: continuous flushing limits tepid water and bacterial formation
• Diaphragm: special butyl rubber — no added colour, odour or taste
• Coatings: corrosion-resistant on both water and nitrogen sides; vessel halves coated before assembly
• Pre-charge: nitrogen gas filling for longer retention
• Compliance: internationally approved and certified
• Accessories: optional Airfixcontrol for simple annual pre-charge testing

Flamco (est. 1956) is a Dutch manufacturer of HVAC and plumbing system components, including expansion vessels, air separators and pressurisation accessories. Their ranges are used in heating and chilled-water circuits and potable water systems across domestic and commercial installations.