R298

Three-way mixing valve male-female flat seat connections

Description
The R298 mixing valve allows for the interception and mixing of heating fluid in radiant heating and cooling systems for floors or ceilings and in medium-size radiator heating systems that require precise control of water delivery temperature.
The R298 valve is equipped with a handwheel for manual operation, or alternatively, it can be coupled to a K281/K282 actuator for automatic control.

Operation
R298 + handwheel for manual operation
The three-way R298 mixing valve is equipped with a handwheel to allow for manual operation, which are carried out via a simple clockwise rotation for the valve opening and anticlockwise for closure. Total opening of the bonnet, and therefore of the primary side supply, is obtained by screwing down the handwheel, while unscrewing it fully frees the thread for the drive actuator connection.

Technical data
• Heating fluid: water for air-conditioning systems
• Max. working temperature: 90 °C
• Max. working pressure: 10 bar
• Maximum differential pressure: 1,2 bar
• Center distance: 120 mm
• Connections: 1 1/2” flat seat
• Mixing: by bonnet DN20, which is normally closed on the primary side
Materials
• Body, bonnet and nut in brass CW617N - UNI EN12165
• EPDM sealing rings