Fiberglass Expansion Tanks
Fiberglass expansion tanks are available in capacities from 60 to 1000 litres.
These fiberglass autoclaves feature a non‑toxic butyl‑rubber membrane that divides the unit into two distinct chambers: the inner chamber is filled with water supplied by the electric pump, while the outer chamber contains compressed air, which pressurizes the water.
Thanks to their fiberglass construction, these tanks offer increased durability — especially in humid environments or even when exposed to outdoor elements.
These expansion tanks are suitable for domestic or industrial applications where pressure control is required. Examples of use include:
— Domestic water supply
— Pressurization systems
— Irrigation systems
— Industrial water systems

