Conventional membrane tanks

Conventional membrane tanks with integrated internal circulation – up to volumes of 3000 liters. Perfect for large flows, with an adjustable gas cushion for drinking water systems.

Save valuable drinking water in your hot water system: expansion water is no longer lost through a safety valve, but is absorbed by the expansion vessel. The replaceable airtight membrane is made from a special butyl rubber and is suitable for drinking water. This version has a single connection on the underside of the tank. Factory equipped with ‘flowjet’: flowthrough, shut-off, and discharge valve for internal circulation in the tank to prevent bacterial growth.

Potable water expansion vessels in pressure-boosting systems

stabilize the drinking water network and reduce the switching frequency. They can be installed at the low-pressure and high-pressure sides of a pressure-boosting system. The mains pressure side is always to be coordinated with the water supply company.

Approvals:

As there are no uniform standards, please observe the drinking water approvals for the individual countries with respect to the selection. These are decisive for the deployment of flowfresh fully flow-through or no flow-through expansion vessels.

Maintenance

The expansion vessels are virtually maintenance-free. In general, it is sufficient to observe flow pressure conditions before the expansion vessel and to check the pre-pressure at least every 5 years since this must always be smaller than the flow pressure. Otherwise, bag wear will increase. The A(U)F expansion vessels are equipped with a Hydrowatch HW that signals bag damage.