Reflex 25 Litre Horizontal Potable Expansion Vessel

Reflex Horizontal Potable 25 Litre Expansion Vessel

In a closed hot water circuit, the water cannot be compressed so any increase in volume, created by an increase in temperature, has to be accommodated by an expansion vessel.

When water is cold, the pre-charge pressure forces the bladder to collapse until the pump is started when the bladder starts to inflate. As the temperature in the system increases, with the associated increase in pressure and volume, the expanded water enters the bladder creating additional volume and lowering the pressure.

When the temperature decreases, the pre-charge pressure forces the water from the bladder and back into the main water circuit.

We offer a complete range of expansion vessels to meet the requirements of most heating systems and for use with potable water. The expansion vessels are manufactured to meet the requirements of PED 97/23/EC Directive. Nitrogen improves the life of the expansion vessel by reducing internal corrosion and preventing the loss of pre-charge pressure. Nitrogen permeates through rubber slower than oxygen, is far less reactive to steel and does not degrade rubber prolonging the life of the membrane.

Horizontal vessel with mounting plate for auxiliary equipment. Manufactured in carbon steel with a multi-part welded construction. Replaceable bladder except for 25 litre vessel. Pre-pressurised air chamber with synthetic rubber compound bladder. The internal surfaces of the vessel in contact with the water are coated against corrosion. External surfaces have a blue durable powder coated finish. Suitable for temperatures up to 70˚C, resistant to ethylene or propylene

• Reflex  PVH25W
• Volume: 25 litres
• Dimensions: 280mm diameter x 298mm height
• Connection: 3/4" BSP
• Max working pressure: 10 bar
• Maximum vessel temperature: 70°C
• Pre charge pressure: 4.0 bar
• Epoxy powder coated, blue colour