Large fiberglass pressure vessel (blue) from a borehole water filtration system.
• Made by Pentair (well-known water treatment brand)
• Fiberglass outer shell with PE liner
• Specs: up to 150 psi, suitable for cold water use (34–120°F / 1–49°C)
• Can be repurposed for water filtration, softeners, or other projects
Free to anyone who can collect.