www.frese.

eu/hvac
Frese Product Guide
Valves & Controls for HVAC Applications
www.frese.eu

www.frese.eu/hvac

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 differential pressure
control.

The pressure independent valves ensure that the design flow conditions are achieved at all times, irrespective
of pressure fluctuations in the system. It also eliminates 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.

Heating Cooling Water Systems

QUALITY MANUFACTURING CUSTOMER FOCUS

KNOWLEDGE INNOVATION
EXCELLENCE
Product Overview

Pressure Independent Control Valves Page 4

for heating and cooling applications

Dynamic Flow Limiting Valves Page 18

for heating and cooling applications

Static Balancing Valves Page 22

for heating and cooling applications

Differential Pressure Control Valves Page 24

for heating and cooling applications

Bypass Units Page 28

for heating and cooling applications

Valves for Domestic Hot Water Systems Page 30

for circulation of domestic hot water

Energy Management Page 32

for heating and cooling applications

Radiator Valves Page 34

for heating applications

System Valves and Accessories Page 36

for heating and cooling applications

Measurement and Diagnostics Page 40

for Frese products

Application Matrix Page 43

for Frese products
3
 Typical Applications

Flow, Pressure and

Temperature Control

4
 PRESSURE INDEPENDENT CONTROL VALVES

OPTIMA Compact
Pressure independent control valve

Technical Data

Size range: DN10 to DN32

Flow range: 30 l/h to 4,001 l/h
Maximum DP: 800 kPa
Pressure rating: PN25
Material: DZR Brass
Temperature range: -10 °C to 120 °C
Actuator options: LOGICA Digital, Energy-series (Modbus/BACnet)
Motoric (0-10 V modulating, on/off and 3 position)
Thermic (0-10 V modulating and on/off )
Failsafe and Feedback
Thermostat with remote sensor for water and air

Size range: DN40 to DN50

Flow range: 1,370 l/h to 11,500 l/h
Maximum DP: 800 kPa
Pressure rating: PN25
Material: Ductile Iron
Temperature range: -10 °C to 120 °C
Actuator options: LOGICA Digital, Energy-series (Modbus/BACnet)
Motoric (0-10 V modulating, 3 position)
Spring Return and Feedback

OPTIMA Compact, Veriflow-serie

Size range: DN10 to DN50
Flow range: 30 l/h to 11,500 l/h
Maximum DP: 800 kPa
Pressure rating: PN25
Material: DZR Brass
Temperature range: -10 °C to 120 °C
Actuator options: LOGICA Digital, Energy-series (Modbus/BACnet)
Motoric (0-10 V modulating, on/off and 3 position)
Thermic (0-10 V modulating and on/off )
Failsafe and Feedback
Thermostat with remote sensor for water and air

5
 Typical Applications

Flow, Pressure and

Temperature Control

6
 PRESSURE INDEPENDENT CONTROL VALVES

OPTIMA Compact
Pressure independent control valve

Technical Data

Veriflow, Standard- and Ultra-series DN50 - DN80

Flow range Std-series: 2,500 l/h to 43,000 l/h
Flow range Ultra-series: 1,400 l/h to 35,000 l/h
Maximum DP: 800 kPa
Pressure rating: PN16/PN25
Material: DZR Brass
Temperature range: -10 °C to 120 °C
Actuator options: LOGICA Digital, Energy-series (Modbus/BACnet)
Motoric (0-10 V modulating, on/off and 3 position)
Failsafe and Feedback
Frese MODBUS System

Veriflow, Standard- and Ultra-series DN100 - DN150

Flow range Std-series: 12,100 l/h to 195,000 l/h
Flow range Ultra-series: 5,300 l/h to 90,000 l/h
Maximum DP: 800 kPa
Pressure rating: PN16/25
Material: Cast/Ductile Iron
Temperature range: -10 °C to 120 °C (see details in technote)
Actuator options: Motoric (0-10 V modulating, 3 position)
Spring Return and Feedback
Frese MODBUS System

Veriflow, Standard- and Ultra-series DN100 - DN150

Flow range: 95,000 l/h to 600,000 l/h
Maximum DP: 800 kPa
Pressure rating: PN16/PN25
Material: Cast/Ductile Iron
Temperature range: -10 °C to 120 °C (see details in technote)
Actuator options: Motoric (0-10 V modulating, 3 position)
Spring Return and Feedback
Frese MODBUS System

7
 ACTUATORS FOR PICVs

Actuators DN10-DN32
Characteristics: Thermic and motoric actuators
Protection class: IP 43/54 to EN 60529
Frequency: 50/60 Hz
Supply voltage: AC/DC 24 V
AC 230 V
Control signal: DC 0-10 V, 4-20 mA
3-position/On/Of
Actuating force: 100 N
Ambient operating
conditions: 0 °C to 50/60 °C

LOGICA Digital, Energy-series DN10-DN50

Characteristics: Digital actuator
Control signal: Modbus RTU/BACnet MS/TP
Protection class: IP 54
Frequency: 50/60 Hz
Supply voltage: 24 V AC/DC
Actuating force: 150 N (DN10-DN32)
500 N (DN40-DN50)
Ambient operating
conditions: 0 °C to 50 °C

Failsafe & Feedback actuators DN10-DN32

Characteristics: 0-10 V, modulating
Protection class: IP 54 acc. EN60529
Frequency: 50/60 Hz AC or DC
Supply voltage: 24 V AC/DC
Control signal: 0-10 V DC
Actuating force: >125 N
Ambient operating
conditions: 0 °C to 50 °C

8
 ACTUATORS FOR PRESSURE INDEPENDENT CONTROL VALVES

Actuators for OPTIMA Compact

Technical Data

Thermostat with remote sensor for water and air

Characteristics: Self acting proportional controller
Valve sizes: DN10-DN20
Valve stroke: 2.5 mm

Spring Return actuators DN40-DN125

Characteristics: Motoric, modulating, Spring Return
Protection class: IP 54 to EN 60529
Frequency: 50/60 Hz
Control signal: 0-10 V DC or 3-point
Actuating force: 600 N/900 N
Ambient operating
conditions: -10 °C to 50 °C

9
 Typical Applications

Modulating Control of
Valves in HVAC-systems

10
 ACTUATORS FOR PRESSURE INDEPENDENT CONTROL VALVES

Actuators for OPTIMA Compact

Technical Data

Actuators DN40-DN200
Characteristics: Motoric, modulating, normally closed
Protection class: IP 54 to EN 60529
Frequency AC: 50/60 Hz
Control signal: 0-10 V DC or 3 position
Actuating force: 400 N - DN40-DN50 (Threaded)
800 N - DN50-DN125 (Flanged)
1500 N - DN150-DN200 (Flanged)
Ambient operating
conditions: -10 °C to 50 °C

Spring Return actuators DN40-DN125

Characteristics: Motoric, modulating, Spring Return
Protection class: IP 54 to EN 60529
Frequency: 50/60 Hz
Control signal: 0-10 V DC or 3-point
Actuating force: 600 N/900 N
Ambient operating
conditions: -10 °C to 50 °C

Actuators DN150-DN300
Characteristics: Motoric, modulating
Variant: Spring Return
Protection class: IP 66 to EN 60529
Frequency: 50/60 Hz
Supply voltage: 24 V AC/DC
Control signal: 0-10 V DC, 4-20 mA DC or 3-point/2point floating
Actuating force: 2500 N Standard
2000 N Spring Return
Ambient operating
conditions: 0 °C to 55 °C

11
 Flow, Pressure and
Temperature Control

12
 PRESSURE INDEPENDENT CONTROL VALVES

COMBIFLOW 6-way
Pressure independent control valve

Technical Data

Size range: DN15 to DN20 (DN25 with unions)

Flow range: 35 l/h to 4250 l/h
Max. DP: 400 kPa
Pressure ratting: PN25
Material: DZR Brass
Temperature range: 0 °C to 90 °C
Actuators: Analog Rotary Actuator (0-10 V)
Modbus Rotary Actuator (Modbus - RTU (RS485))
Multi Rotary Actuator (BACnet MS/TP (RS485), Modbus – RTU (RS485), 0-10 V & 4-20 mA)

OPTIMIZER 6-way
Pressure independent control group

Technical Data
Size range: DN15 to DN25
Flow range: 65 l/h to 3,609 l/h
Maximum DP: 800 kPa (OPTIMA Compact)
Pressure rating: PN25 (OPTIMA Compact), PN16 (6-way valve)
Material: DZR Brass
Couplings 6-way valve: Brass or DZR Brass
Temperature range: 0 °C to 120 °C (OPTIMA Compact)
0 °C to 90 °C (6-way valve)
Actuators: Thermic (0-10 V) (OPTIMA Compact)
Rotary actuator (3-point on/off ) (6-way valve)

13
 Typical Applications

Modulating Control of
Valves in HVAC-systems

14
 ACTUATORS FOR PRESSURE INDEPENDENT CONTROL VALVES

Actuators for COMBIFLOW 6-way

Technical Data

COMBIFLOW Multi Rotary Actuator

Supply voltage: 24 V AC/DC +/- 10 %
Protection class: IP 54 to EN 60529
Frequency: 50/60 Hz
Feedback signal: 0-10 V DC
Control signal analog: 0-10 V, 4-20 mA
(2-10 V, 0-20 mA)
Control signal digital: BACnet MS/TP (RS485)
Modbus – RTU (RS485)
Rotation angle: 90 °

COMBIFLOW Analog Rotary Actuator

Supply voltage: 24 V AC/DC +/- 20 %
Protection class: IP 54 to EN 60529
Frequency: 50/60 Hz
Control signal: 0/2 - 10 V DC
Rotation angle: 90 °

15
 Typical Applications
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Complete Package Solution for
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Upiet et officiam quunt in expedit qui tes quis enducieture velicil luptam nulles quas incienditium

Modbus enabled Dynamic Valves

lam, eossequunt modis et estrumque ma eatur, tem invelit utate natur sae. Itatem sintota epedigent

16
 PRESSURE INDEPENDENT CONTROL VALVES

Frese MODBUS System

Technical Data

MODBUS Converter
Function: MODBUS Slave/Node
Box material: Polyamide Halogenfree
Operation voltage: 24 V AC/DC -10 % / +20 % via bus cable
Control connection: MODBUS RTU RS485
Actuator control signal: 0-10 V DC, bidirectional modulating
Temperature sensors: 4-20 mA active transmitters or passive sensors
Ambient temperature: 0 °C to 50 °C during operation
Weight: 100 g

MODBUS System Actuators

DN10-DN32
• Halogen free cable, incl. M8 connector, 1 m or 3 m
• Extension cables available

DN40-DN50
• Pre-fabricated cables available for installation
• Protection class IP54

DN50-DN200
• Pre-fabricated cables available for installation
• Protection class IP54

Temperature Sensor for Frese MODBUS System

Characteristics: PT1000 EN60751/B

Protection class: IP 54 to EN60529
Ambient temperature: 0 °C to 60 °C
Measuring range: 0 °C to 100 °C
Cable: 3.0 m halogen free incl. connector

17
 Typical Applications

Accurate and Effective

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nonsecus, atur si delignatur mi, cum que voles auditat qui que dusciande natur audis eum etur?
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Flow Limitation
lam, eossequunt modis et estrumque ma eatur, tem invelit utate natur sae. Itatem sintota epedigent

18
 DYNAMIC FLOW LIMITING VALVES

SIGMA Compact
Dynamic flow limiting valve - externally adjustable

Technical Data

Size range: DN15 to DN32

Flow range: 40 l/h to 5,000 l/h
Maximum DP: 400 kPa
Pressure rating: PN25
Material: DZR Brass
Temperature range: -10 °C to 120 °C

Size range: DN40 to DN50

Flow range: 719 l/h to 10,350 l/h
Maximum DP: 400 kPa
Pressure rating: PN25
Material: Ductile Iron
Temperature range: -10 °C to 120 °C

Size range: DN50 to DN300

Flow range Std-series: 2,480 l/h to 600,000 l/h
Flow range Ultra-series: 1,400 l/h to 90,000 l/h
Maximum DP: 800 kPa
Pressure rating: PN16/PN25
Material: Cast/Ductile Iron
Temperature range: -10 °C to 120 °C (see details in technote)

19
 Typical Applications

Accurate and Effective

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nonsecus, atur si delignatur mi, cum que voles auditat qui que dusciande natur audis eum etur?
Upiet et officiam quunt in expedit qui tes quis enducieture velicil luptam nulles quas incienditium

Flow Limitation
lam, eossequunt modis et estrumque ma eatur, tem invelit utate natur sae. Itatem sintota epedigent

20
 DYNAMIC FLOW LIMITING VALVES

ALPHA
Dynamic flow limiting valve - cartridge solution

Technical Data

Size range: DN15 to DN50

Flow range: Dependent on ALPHA flow cartridge
Maximum DP: 600 kPa
Pressure rating: PN25
Material: DZR Brass
Temperature range: -20 °C to 120 °C

ALPHA Wafer
Dynamic flow limiting valve - cartridge solution

Technical Data

Size range: DN50 to DN1000

Flow range: Dependent on ALPHA flow cartridge
Maximum DP: 600 kPa
Pressure rating: PN16/PN25
Material: Ductile Iron
Temperature range: -20 °C to 110 °C

ALPHA & ALPHA Cool Cartridges

Dynamic flow cartridges for use with the ALPHA and EVA ranges

Technical Data

Types: Type 10/11/20 suitable for DN15 to DN25

Type 30/40 suitable for DN25L to DN50
Type 50/60 suitable for DN50 to DN800 (wafer)
Maximum DP: 600 kPa
Material: ALPHA: DZR Brass (Type 10/11/20/30/40)
AISI 304 (Type 50/60)
ALPHA Cool: PPS glass-reinforced
Temperature range: ALPHA: -20 °C to 110 °C
ALPHA Cool: -20 °C to 80 °C

21
 Reliable Flow Balancing
and Verification

22
 MANUAL BALANCING VALVES

Frese STBV Range

Manual Balancing Valves

Technical Data

FODRV
Fixed orifice double regulating valve

Size range: DN15 to DN300

Kv range: 0.26 to 1,099 (m3/h at a pressure drop of 1 bar
across the fully open valve)
Pressure rating: DN15-DN50: PN25
DN65-DN300: PN16
Material: DN15-DN50: DZR Brass
DN65-DN300: Ductile Iron
Temperature range: DN15-DN200: -10 °C to 120 °C
DN250-DN300: -10 °C to 110 °C

VODRV
Variable orifice double regulating valve

Size range: DN15 to DN500

Kv range: 3.50 to 3,381 (m3/h at a pressure drop of 1 bar
across the fully open valve)
Pressure rating: DN15-DN50: PN25
DN65-DN500: PN16
Material: DN15-DN50: DZR Brass
DN65-DN500: Ductile Iron
Temperature range: DN15-DN200: -10 °C to 120 °C
DN250-DN500: -10 °C to 110 °C

DRV
Double regulating valve

Size range: DN15 to DN500

Kv range: 2.77 to 3,381 (m3/h at a pressure drop of 1 bar
across the fully open valve)
Pressure rating: DN15-DN50: PN25
DN65-DN500: PN16
Material: DN15-DN50: DZR Brass
DN65-DN500: Ductile Iron
Temperature range: DN15-DN200: -10 °C to 120 °C
DN250-DN500: -10 °C to 110 °C

23
 Constant Differential
Pressure Control

24
 DIFFERENTIAL PRESSURE CONTROL VALVES

PV Compact
Differential pressure control valve

Technical Data

PV Compact DN15-DN50
Maximum DP: 450 kPa
Temperature range: -10°C to 120°C
Pressure rating: PN25

Size range: DN10 – DN32

Material: DZR Brass
Control range: 5-30 kPa / 20-60 kPa / 20-80 kPa
Flow range: 50 l/h to 5,000 l/h

Size range: DN40 – DN50

Material: GJS-400
Control range: 20-80 kPa
Flow range: 3,000 l/h to 11,500 l/h

PV Compact, Spectrum-Serie
Maximum DP: 450 kPa
Temperature range: -10 °C to 120 °C
Pressure rating: PN25
Size range: DN10 – DN32
Material: DZR Brass CW602N
Control range: 5-30 kPa / 20-60 kPa / 20-80 kPa
Flow range: 50 l/h to 5.000 l/h
Size range: DN40 – DN50
Material: GJS-400
Control range: 20-80 kPa
Flow range: 3,000 l/h to 11,500 l/h
Size range: DN50 Ultra, Flansch
Material: GJS-400
Control range: 20-80 kPa
Flow range: 3,200 l/h to 13,000 l/h

PV Compact DN50-DN200
Maximum DP: 1.000 kPa
Temperature range: -10 °C to 120 °C (110 °C) See technote
Pressure rating: PN16 / PN25
Material: GJL-250 / GJS-400
Control range: 20-80, 20-100, 50-200, 90-350, 150-500
See technote
Flow range: 3,240 l/h to 261,000 l/h

25
 Constant Differential
Pressure Control

26
 DIFFERENTIAL PRESSURE CONTROL VALVES

PV-SIGMA Compact
Differential pressure and flow regulating valve set

Technical Data
Size range: DN15 to DN32 DN40 to DN50
Flow range: 50 l/h to 5,000 l/h 3,000 l/h to 10,350 l/h
Control ranges: 5 to 30 kPa 20 to 80 kPa
20 to 60 kPa
20 to 80 kPa
Maximum DP: 400 kPa 400 kPa
Pressure rating: PN25 PN25
Material: DZR Brass Ductile Iron
Temperature range: -10 °C to 120 °C -10 °C to 120 °C

DRPV
Adjustable differential pressure relief valve

Technical Data
Size range: DN15 to DN32
Control range: 10 to 60 kPa
Maximum DP: 600 kPa
Pressure rating: PN25
Material: DZR Brass
Temperature range: -20 °C to 120 °C

YDF-2F and YDF-20F

Differential pressure control valve

Technical Data
Size range: DN25 to DN300
Control ranges: 20 to 200 kPa
150 to 500 kPa
Maximum DP: 1,000 kPa
Pressure rating: PN16/PN25
Material: Cast Iron (PN16)
Cast Steel (PN25)
Maximum temperature: 170 °C

27
 Prefabricated
Flushing Bypass Units

28
 BYPASS UNITS

MODULA Direct
Direct mount bypass unit with flow measurement

Technical Data
Size range: DN15
Center distance: 40 mm
Pressure rating: PN20
Material: DZR Brass
Temperature range: 0 °C to 120 °C

MODULA PRO
Bypass unit with 3 isolating valves

Technical Data
Size range: DN15 to DN25
Center distance: 80/130/170 mm
Pressure rating: PN20
Material: DZR Brass
Temperature range: 0 °C to 120 °C

MODULA
Bypass unit with 2 isolating valves

Technical Data
Size range: DN15 to DN25
Center distance: 80/130/170 mm
Pressure rating: PN20
Material: DZR Brass
Temperature range: 0 °C to 120 °C

29
 Circulation of
Domestic Hot Water

30
 VALVES FOR DOMESTIC WATER SYSTEMS WITH CIRCULATION

CirCon
Thermostatic control valve

Technical Data

Size range: DN15 to DN20

Maximum DP: 100 kPa
Pressure rating: PN10
Material: Stainless Steel AISI 316
Temperature setting range: 37 °C to 65 °C
Factory setting temperature: 52.5 °C

TemCon
Thermostatic control valve with high temperature hot water bypass

Technical Data

Size range: DN15 to DN20

Maximum DP: 100 kPa
Pressure rating: PN10
Material: Stainless Steel AISI 316
Temperature setting range: 37 °C to 65 °C
Factory setting temperature: 57 °C
HTHW Bypass: 70 °C to 80 °C (Kv=0,3 m3/h)

ALPHA Sanitary
Dynamic balancing valve for circulation of DHW

Technical Data

Size range: DN15 to DN20

Flow range: 40 l/h to 410 l/h
Material: Stainless Steel AISI 316
Pressure class: PN25
Temperature: -20 °C to 120 °C
Thread: ISO 228

31
 Measuring, Monitoring
and Optimizing the ΔT

32
 ENERGY MANAGEMENT

DELTA T Control System

Easy-to-use solution for measuring, monitoring and optimizing the ∆T

Technical Data

Protection class: IP 24 to EN 60529

Supply: 24 V AC/DC
Power consumption: 1,5 VA
Max. power consumption: 4 VA
Control input/output signal: 0-10 V DC
Feedback signal: 0-10 V DC
ΔT setting range: 0.2 °C - 40 °C
Temperatur sensor range: 0 °C - 110 °C
Ambient operating conditions: 5 °C - 50 °C
20 - 90 % RH

OPTIMIZER Twin Flow

For 2 pipeheating and cooling systems

Technical Data

Protection class: IP 23 to EN 60529

Supply: 24 V AC/DC
Max. power consumption: Max. 4 VA (total group)
Control signal: 0-10 V DC distributed as follows:
0.5-4.5 V flow modulation in cooling
4-5-5.5 V - closed
5.5-10 V flow modulation in heating
The control signal must be provided from
the BMS system or a room controller.
Ambient operating conditions: 0 °C - 50 °C
20 - 90 % RH

33
 For use in 2-pipe
Radiator Systems

34
 RADIATOR VALVES

RadCon
Pressure Independent Radiator Valves

Technical Data

RadCon Radiator Valve

Size range: DN10 to DN20
Flow range: 20 – 340 l/h
Maximum DP: 70 kPa
Pressure rating: PN10
Material: Material: Red Bronze
Spindle and spring: Stainless steel
Temperature range: 0 °C to 90 °C

RadCon Lock Shield Valve

Size range: DN15 to DN20
Pressure rating: PN10
Material: Red Bronze
Temperature range: 0 °C to 120 °C

RadCon Thermostatic Head

Setting: 6 °C to 26 °C
Material: Housing: Plastic, white RAL 9016
Connection: Brass nickel plated
Ambient temperature: -10 °C to 50 °C
Connection thread: M30x1.5

35
 Quality System Valves
and Accessories

36
 SYSTEM VALVES AND ACCESSORIES

Frese Butterfly Valve

Isolation Valve

Technical Data
Size range: DN50-DN600
Material: Valve body: Ductile Iron EN GJS-450/10
Disc: Stainless steel AISI316
Seat: EPDM
Medium temperature DN50-DN200: -20 °C to 120 °C
DN250-DN600: -20 °C to 110 °C
Pressure class: PN16
Close off pressure: Max. 16 Bar
Leakage class: ISO 5208 Rate A (zero leakage)

Frese Ball Valve

Isolation Valve

Technical Data
Size range: DN15-DN50
Material: DZR Brass
Gasket: PTFE
Pressure rating: PN16
Temperature range: -30 °C to 120 °C (see details in technote)
Connections: ISO 228

Frese Strainer
Maximum protection of the pipeline
equipment against particles and other impurities

Technical Data
Size range: DN15-DN50
Material: DZR Brass
Filter: Stainless steel
Gasket: PTFE
Pressure rating: PN20
Connections: Female/Female
Accessories: Spindle extension available

37
 Reduced heat loss
and better heat savings

38
 SYSTEM VALVES AND ACCESSORIES

Insulation Covers
For ALPHA, OPTIMA Compact, PV Compact, SIGMA Compact,
and STBV VODRV

Technical Data
Material: EPP (Expanded Polypropylene)
Water absorption: < 2.5 vol% at 20 °C
Temperature range: up to 120 °C
Insulating property: Lambda = 0.039 W/mk
Density: 50 g/l
Fire resistant: According to DIN 4102: B2

Insulation Covers
For MODULA

Technical Data
Material: EPP (Expanded Polypropylene)
Water absorption: < 2.5 vol% at 20 °C
Temperature range: up to 90 °C
Insulating property: Lambda = 0.039 W/mk
Density: 60 g/l
Fire resistant: EN ISO 11925-2: E
DIN 4102-1: B2
FMVSS302: Fulfilled
UL94: HBF

Flexible Hose
Quick and easy connection with union

Technical Data
Hose & braided shield: Stainless steel AISI 304
End connection: Brass nut, nickel plated
End piece: Steel ST 37.2, nickel plated
Insulation: Elastomeric rubber foam
Pressure class: PN25
Temperature range: 0 °C to 95 °C

39
 Accurate Measurement
and Verification

40
 MEASUREMENT AND DIAGNOSTICS

Frese SMART Balance

Simple differential pressure measurement and flow verification

Technical Data

Measurement range
Pressure class: PN25
Differential pressure: 1000 kPa (10 Bar)
Static pressure: 1000 kPa (10 Bar)
System temperature (water): -20 °C to 120 °C
Ambient temperature: -10 °C to 40 °C

Measurement deviation
Differential pressure: < 0.1 % of full scale
Flow: < 0.1 % of full scale plus the valve deviation
Temperature: < 0.2 °C

Environmental specification
Measurement sensor: IP65, Max. 90 %RH

Frese DP Manometer
For the measurement of differential pressure

Technical Data

Operating temperature: From 10 °C to 50 °C (ambient temperature)

Max. differential pressure: 7 bar (operating range)
Max. static pressure: 10 bar
Environmental specification: IP67
Auto switch-off time: 12 minutes

41
42
Product Application Guide
Frese offer a range of valves and controls for a variety of HVAC heating and cooling applications. From primary side
plant valves for air handling units and chillers to secondary side valves for terminal unit applications, Frese products
contribute towards a comfortable and efficient indoor climate control for buildings.

Single Coil Terminal Units

Plate Heat Exchangers

Passive Chilled Beams
Active Chilled Beams

Domestic Hot Water

Underfloor Heating
Over Door Heaters

Air Handling Units

Radiator Systems
Trench Heating

Radiant Panels
Fan Coil Units
Type Size Range
Pressure Independent Control Valves
DN10 - DN32 • • • • • • •
OPTIMA Compact incl. Veriflow-series
DN40 - DN300 • •
COMBIFLOW 6-way valve DN15 - DN20 •
OPTIMIZER 6-way solution DN15 - DN25 •
Dynamic Flow Limiting Valves
ALPHA DN15 - DN50 • • • • • • •
ALPHA Wafer DN50 - DN1000 • •
DN15 - DN32 • • • • • • •
SIGMA Compact
DN40 - DN300 • •
Static Balancing Valves
DN15 - DN50 • • • • • • •
STBV Range
DN65 - DN500 • •
Differential Pressure Control Valves
DN15 - DN32 • • • • • • • • •
PV Compact incl. Spectrum-Serie DN40 - DN50 • • • • • • • • •
DN50 - DN200 • •
DN15 - DN32 • • • • • • • • •
PV-SIGMA Compact
DN40 - DN50 • • • • • • • • •
Flushing Bypass Units
MODULA Pro DN15 - DN25 • • • • • • • •
MODULA DN15 - DN25 • • • • • • • •
MODULA Direct DN15 • • • • • • • •
Valves for Domestic Hot Water
CirCon DN15 - DN20 •
TemCon DN15 - DN20 •
ALPHA Sanitary DN15 - DN20 •
Energy Management
DELTA T Control System • • • • • • • • • • •

* The application guide above shows some of the typical applications for the Frese range of products. If you have an
application that is not shown in the table, please contact your local Frese office to discuss your requirements.
43
44
Project References

Commercial
Sports
Buildings

Shopping
Malls

Education

Please visit
www.frese.eu/
Residentials Hotels
HVAC
for more details
45
 Download the Frese App
Your way to easy commissioning

Find the correct pre-setting for your dynamic balancing valves with our app

1. Select the type of valve 2. Enter the flow you require

46
 Scan &
download

Products in the app

3. Calculate
Presetting and sizing tool
• OPTIMA Compact
• OPTIMA Compact, Veriflow
• COMBIFLOW
• OPTIMIZER 6-Wege
• ALPHA
• SIGMA Compact
• PV Compact
• PV-SIGMA Compact
• OPTIMA P Compact
• Frese STBV VODRV

• OPTIMA
• EVA
• PV
• PVS
• S
The Frese Valves app Commissioning tool
immediately calculates • OPTIMA Compact, Veriflow
your valve pre-setting • Frese STBV VODRV

or your flow cartridge Available in several languages:

and the pump pressure

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 QUALITY MANUFACTURING CUSTOMER FOCUS
KNOWLEDGE INNOVATION
EXCELLENCE

www.frese.eu/hvac
Denmark - Main Office United Kingdom China Australia & New Zealand
Frese A/S Frese Ltd Frese Valves (Ningbo) Co., Ltd. Frese Asia Pacific
Tel: +45 58 56 00 00 Tel: +44 (0) 1704 896 012 Tel: +86 (21) 5110 3212 Tel: +61431 794 414

Germany Turkey Saudi Arabia South Africa

Frese Armaturen GmbH Frese Eurasia DIS TIC. LTD. STI. Frese Saudi Arabia Frese Asia Pacific
Tel: +49 (0)241 475 82 333 Tel: +90 216 580 93 60 Tel: +966 5410 25 405 Tel: +61431 794 414