A bivalent valve is used as a mixing valve in a heating system, where energy is taken from two different heat sources, or in an accumulator system where energy is taken from two different levels.
Design
4-way mixing valve where the components in contact with water are made from EN 12165 CW617N brass.
Shaft seal with double O-rings and O-ring sealed cover. All O-rings are made from EPDM rubber.
Pipe unions with ferrules, or external thread.
The valve can be motorised.
Turning angle 90°, Turning torque < 1 Nm.
Valve installation in any position.
Fitting / Installation
Union ports 1-4 are marked.
External threads are sealed in the usual way.
It is easier to fit the compression fitting if a lubricant is applied to the thread and bevel. Tighten first by hand and then with a box spanner. Soft pipes are to be fitted with a support sleeve.
Operation and maintenance
The valve requires no maintenance.
The installation should be checked regularly.