With the COMBIFLOW 6-way solution, you need only one valve and one actuator to achieve complete pressure independent balancing and control

This solution - which is a world’s first - allows our customers to reduce some of the complexity in 4-pipe heating and cooling systems by minimizing the number of required valve components.

By integrating the differential pressure controller in the valve, you have fewer connection points, which minimizes potential leakage problems, and with just one actuator you only need one data point to the building’s BMS.

Frese COMBIFLOW 6-way is designed to cover a wide flow range. This simplifies the selection process, since a limited product range can cover a wide variety of needs. In addition, an extremely high flow capability has made it possible to downsize the valve dimension, further contributing to the valve’s compact design. A low flow version is also available

The energy saving capabilities of our patented OPTIMA Compact are also found in the 6-way solution. Additionally, the COMBIFLOW 6-way has shown the lowest pressure loss known in the market, resulting in significant pump energy savings.

Application

The COMBIFLOW is used in 4-pipe systems, such as:

• Heating and cooling via radiant panels
• Decentralised ventilation units
• Fan coil systems
• Convection heating & cooling units

Features

• Patented “6-way PICV” technology eliminates overflows, regardless of fluctuating system pressure
• Differential pressure (DP) controller integrated within the 6-way valve
• Single valve and actuator for flowrate modulation and switching between cooling and heating circuits
• Separate flowrate pre-sets for cooling and heating via BACnet or Modbus
• Constant differential pressure guarantees 100% authority
• Ultra-high KVS value with minimal pressure loss
• Achieves high flows with minimal required differential pressure due to advanced design of the PICV
• Integrated pressure relief in closed position to allow for contraction or expansion when not heating or cooling
• Removable differential pressure cartridge

Benefits

• Precise flow modulation without need for a second valve and second actuator and without separate flowrate feedback, reduces bill of materials and assembly and commissioning work with less risk of leakage through connectors
• Compact solution with small space requirements
• Complete solution. No balancing valves or additional PICVs required
• Large bores ensure lowest pressure loss of any 6-way solution, lowering required pump head and energy used and potentially pump size, leading to substantial savings
• Removable DP-cartridge makes flushing at full flow efficient and draining simple, without the need to disconnect and reseal pipe connections
• Only one data point required to connect to the BMS
• Remote flow setting via BACnet or Modbus
• Longer lifetime of the actuator and lower power consumption since all pressure fluctuations are compensated by the integrated DP controller and not by continuous adjustment of  actuator position
• Simple and fast sizing, just select design flow