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

Pressure Independent Radiator Valve

Frese RadCon is a pressure independent Radiator Valve (PIRV) for use in 2-pipe radiator systems.

Combined with the elegant thermostatic sensor head RadCon provides optimal comfort along with the highest energy efficiency and easy commissioning.

The valve can be preset from 20 l/h to 340 l/h (0.006 l/s to 0.094 l/s) and provides modulating control regardless of any fluctuations in the differential pressure of the radiator system.

It combines an externally adjustable presetting, a differential pressure controller and a modulating radiator valve.

100% control of the water flow in the building is achieved easily, while creating high comfort and energy savings. At the same time maximizing the ΔT is possible due to the increased system stability.

Benefits - Design

• Less time to define and select the right presetting. Just set the required flow for the radiator. No KV calculation needed
• Flexibility if the system is modified after the initial installation

Benefits - Installation

• No further regulating valves required in the radiator system when the differential pressure does not exceed70 kPa
• Minimized commissioning time due to automatic balancing of the system
• Simplified radiator system design
• Thermostatic sensor with M30x1.5 connection

Benefits - Operation

• High comfort for end-users due to high precision temperature control
• Anti-frost thermosatic head protects the system and reduces the risk of mould
• No flow noise due to the built in differential pressure controller in the valve
• No overflow through the radiator ensuring the optimal ΔT in the radiator system
• Easy maintenance - replacable internals

Features

• The constant differential pressure across the modulating control component guarantees 100% authority
• Automatic balancing eliminates overflows, regardless of fluctuating pressure conditions in the system
• Thermostatic sensor head with small dimension
• Differential pressure operating range up to 70 kPa
• Complete programme DN10-DN20
• Theft protection of thermostatic head

Bypass Unit

MODULA is a compact and versatile valve system that combines the range of dynamic flow, pressure and temperature control valves with isolation, flushing, draining and measurement components within a prefabricated, tested and ready to install terminal bypass unit.

MODULA integrates one of the following valve solutions:

• OPTIMA Compact (Pressure Independent Control Valve - PICV)
• ALPHA (Dynamic Flow Limiting Valve)
• SIGMA Compact (Externally Adjustable Dynamic Flow Limiting Valve)
• PV Compact (Adjustable Differential Pressure Control Valve)
• STBV range (Adjustable Manual Balancing Valve)

Each unit can be supplied with isolation valves, strainer, drain/hose connection & P/T plug.

Benefits

The MODULA Bypass Unit combines the many benefits of the OPTIMA Compact, ALPHA, SIGMA Compact, PV Compact and STBV range in addition to:

Installation benefits

• Compact design for limited space availability
• Minimized installation and commissioning costs
• Allows easy flushing and coil isolation
• Easy lagging of spindle extensions

Operation benefits

• High comfort with minimized operation and maintenance costs
• Efficient flow, temperature and pressure control
• 5 modes of operation

With OPTIMA Compact you get a dynamic flow and temperature control valve for heating and cooling systems

OPTIMA Compact combines the functions of an externally adjustable automatic balancing valve with an integrated differential pressure controller and a full authority modulating control valve in one single, compact valve housing.

The OPTIMA Compact provides modulating control with full authority regardless of variations in the differential pressure of the system making it possible to achieve 100% control of the water flow in the building.

In addition, the correct application of the OPTIMA Compact can significantly reduce pump energy consumption and improve the efficiency of other hydronic system components. It also provides optimal comfort for end users due to high precision temperature control.

The valve operates by adjusting automatically to the preset flow under fluctuating pressure conditions whilst also providing full modulating control. To achieve the design flow rate, the simple pre-setting scale on top of the valve is rotated to the required set point, which can be determined
by using the Frese flow tables or the Frese Valves app.

OPTIMA Compact is also available in a Veriflow-series. This has an additional P/T plug which allows for both flow measurement and verification of minimum differential pressure across the valve. This is the first pressure independent control valve (PICV) on the market to integrate
both functionalities in the original valve housing without add-ons and additional space requirements.

Save Time, Energy and Costs with our Patented Valve Technology

Frese’s patented pressure independent technology is an innovative, energy-saving alternative to traditional hydronic balancing and control methods. It provides efficient and accurate flow and temperature control.

The PICVs ensure that the design flow conditions are achieved at all times, irrespective of pressure fluctuations in the system. They also eliminate overflows – resulting in significant pump energy savings.

Dynamic valves hold several other advantages over traditional, static balancing valves. They contribute to simplified system designs by eliminating the need for additional balancing valves in the distribution pipework. They are also highly flexible if your system needs to be modified or expanded at a later date.

Because pressure independent control valves automatically adapt to any changes in the rest of the system, they are much easier to commission since they require no proportional balancing.

Digitise your way to energy-savings

Paired with an OPTIMA Compact valve, the LOGICA Digital actuator offers intelligent hydronic control and insight.

Easy installation and connection with BMS

This incredibly compact digital actuator is easy to install and sets you up for direct communication with the BMS via Modbus or BACnet, eliminating the need for a seperate control box.

Reduced energy consumption

LOGICA Digital has built-in Delta T control which decreases the flow requirement on the pump and ensures constant system performance optimisation. It offers insight right down to the individual terminal unit and allows system integrators and facility managers to analyse and act on potential improvements and enact new energy efficiency strategies.

Intelligent solution with unmatched features

• BACnet MS/TP & Modbus RTU support
• Simple addressing via dip-switches
• 1 binary or analogue input supporting binary input, 0-10 V or Pt1000
• 1 universal input/output supporting binary, 0-10 V in
• Pt1000, 0-10 V out or 0-10 V position feedback
  Complete built-in library of OPTIMA Compact valves
• Selectable Linear or EQ% characteristic
• Flow indication
• Thermal Power indication (when combined with 2 temperature sensors)
• Thermal energy consumption indication
• 5 selectable control methods in BMS
• Programmable scheduled valve flushing & exercising
• Nominal stroke up to 15 mm
• Auto calibration to all valve strokes
• Direct assembly on valve neck with union nut
• Position indicator for stem travel
• Short-circuit and reverse polarity protection
• Compact design
• Remote setting and commissioning

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

Pressure Independent Radiator Valve

Frese RadCon is a pressure independent Radiator Valve (PIRV) for use in 2-pipe radiator systems.

Combined with the elegant thermostatic sensor head RadCon provides optimal comfort along with the highest energy efficiency and easy commissioning.

The valve can be preset from 20 l/h to 340 l/h (0.006 l/s to 0.094 l/s) and provides modulating control regardless of any fluctuations in the differential pressure of the radiator system.

It combines an externally adjustable presetting, a differential pressure controller and a modulating radiator valve.

100% control of the water flow in the building is achieved easily, while creating high comfort and energy savings. At the same time maximizing the ΔT is possible due to the increased system stability.

Benefits - Design

• Less time to define and select the right presetting. Just set the required flow for the radiator. No KV calculation needed
• Flexibility if the system is modified after the initial installation

Benefits - Installation

• No further regulating valves required in the radiator system when the differential pressure does not exceed70 kPa
• Minimized commissioning time due to automatic balancing of the system
• Simplified radiator system design
• Thermostatic sensor with M30x1.5 connection

Benefits - Operation

• High comfort for end-users due to high precision temperature control
• Anti-frost thermosatic head protects the system and reduces the risk of mould
• No flow noise due to the built in differential pressure controller in the valve
• No overflow through the radiator ensuring the optimal ΔT in the radiator system
• Easy maintenance - replacable internals

Features

• The constant differential pressure across the modulating control component guarantees 100% authority
• Automatic balancing eliminates overflows, regardless of fluctuating pressure conditions in the system
• Thermostatic sensor head with small dimension
• Differential pressure operating range up to 70 kPa
• Complete programme DN10-DN20
• Theft protection of thermostatic head

Bypass Unit

MODULA is a compact and versatile valve system that combines the range of dynamic flow, pressure and temperature control valves with isolation, flushing, draining and measurement components within a prefabricated, tested and ready to install terminal bypass unit.

MODULA integrates one of the following valve solutions:

• OPTIMA Compact (Pressure Independent Control Valve - PICV)
• ALPHA (Dynamic Flow Limiting Valve)
• SIGMA Compact (Externally Adjustable Dynamic Flow Limiting Valve)
• PV Compact (Adjustable Differential Pressure Control Valve)
• STBV range (Adjustable Manual Balancing Valve)

Each unit can be supplied with isolation valves, strainer, drain/hose connection & P/T plug.

Benefits

The MODULA Bypass Unit combines the many benefits of the OPTIMA Compact, ALPHA, SIGMA Compact, PV Compact and STBV range in addition to:

Installation benefits

• Compact design for limited space availability
• Minimized installation and commissioning costs
• Allows easy flushing and coil isolation
• Easy lagging of spindle extensions

Operation benefits

• High comfort with minimized operation and maintenance costs
• Efficient flow, temperature and pressure control
• 5 modes of operation