The expansion (expansion) vessel with a self-draining valve are overflow tanks made of acid-resistant steel, tightly welded and additionally sealed at the edges with silicone. They are used as expansion tanks for open systems, e.g. central heating, where the losses are automatically replenished by opening the float valve and allowing liquid. It works in a similar way to a bathroom toilet.

• Filling valve: 1/2 inch
• Transfer: 1 inch
• Drain: 1 inch
• Float: copper
• Zaw r: brass

variants

• draining vessel 15 liter made of stainless steel
• draining vessel 20 liter made of stainless steel
• draining vessel 25 liter made of acid-resistant steel
• draining vessel 30 liter made of acid-resistant steel