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About 6-way Valves

Explains the calculation concept for 6-way valves.

A 6-way valve is installed to connect a consumer to a 4-pipe system for heating and cooling. 6-way valves with and without a control group are available. Without a control group, the valve acts as simple resistance in the network, with a kvs value. With control group, the valve is given an additional pressure-independent flow regulator. The pressure loss of the 6-way valve is determined from the Cv value of the flow regulator in the design point (network with the higher flow rate) and the kvs value of the valve with the dominant flow rate in the calculated network. The dimensioning of the 6-way valve with control group is done with the network with the largest mass flow.

Neutral, manufacturer-specific and VDI valves can be assigned. If you have not made a preselection in the valve preselection, a neutral 6-way valve is used. If you have multiple valves in the preselection, a valve suitable for the general conditions will be automatically selected.

To ensure that the sections parts downstream of the 6-way valve are detected and calculated by both trades, the supply water from the valve to the consumer has to be drawn in the medium heating/cooling supply water (layer key SWHC) and the return water from the consumer to the valve has to be drawn in the medium heating/cooling return water (layer key RWHC).