Refix DE 300 Diaphragm Expansion Vessel (10/4 bar)

Refix DE 300 Diaphragm Expansion Vessel (10/4 bar)

The Refix DE 300 diaphragm expansion vessel is engineered to provide safe, stable, and reliable pressure control in closed water systems where volume changes must be absorbed efficiently. In pressurized water and heating installations, temperature fluctuations and pressure variations cause water to expand and contract. Without a properly sized expansion vessel, these volume changes can result in excessive system pressure, frequent safety valve discharge, mechanical stress on components, and reduced service life of pumps, valves, and pipework. The Refix DE 300 is designed to prevent these issues by providing controlled volume compensation and pressure stabilization.

• Brand: Refix
• Model: DE 300
• Product Type: Diaphragm Expansion Vessel
• Design: Without through flow
• Color / Finish: Blue, epoxy resin coating
• Nominal Volume: 300 liters
• Maximum Useful Volume: 200 liters
• Maximum Working Pressure: 10 bar
• Factory Pre-charge Pressure: 4 bar
• Diaphragm Material: Butyl (replaceable)
• Operating Temperature Range: -10 °C to +70 °C
• Connection Size: G 1 1/4″ (threaded)
• Installation: Vertical, floor-mounted
• Dimensions: Height 1267 mm × Diameter 634 mm
• Weight: Approx. 44 kg
• Compliance: DIN EN 13831, PED 2014/68/EC
• Typical Applications: Service Water Systems, Fire Systems, Underfloor Heating Systems, Closed Water Circuits