Logo Oventrop GmbH & Co. KG

Cocon QTZ Pressure independent control valve with internal thread PN 25
DN 20, Rp ¾, 250-1800 l/h, without measuring valves, DZR brass


Pressure independent control valve for dynamic hydronic balancing of heat exchangers, for example fan coils or cooling ceilings and distribution pipes in heating and cooling systems with closed circuits. The valve combination consists of an automatically operating flow controller and a control valve and can be equipped with an actuator or a manual regulating head.
Two-way valve, with secured, lead sealable, infinitely adjustable flow limitation. Direct setting in litres per hour. Readability of the set value possible from the outside, independent of the handwheel position, even with the actuator mounted. Valves with blind plugs can be retrofitted with Classic measuring valves. All DN 15 and DN 20 valves with internal thread are suitable for copper pipe with compression fittings. 
Valve body and parts coming into contact with the medium made of dezincification resistant brass, plastic, stainless steel, EPDM or PTFE. Maintenance-free spindle sealing.
Cocon QTZ are characterised by easy adjustability, compact dimensions and best control quality.


  • Main function: Pressure independent control valve
  • Medium: Water, Water-glycol mixture
  • Nominal size: DN 20
  • Connections: Internal thread
  • Connection size: Rp 3/4
  • Control range: 250 - 1,800 l/h
  • Differential pressure p1-p3: 18 - 600 kPa
  • kvs: 3.1
  • Operating temperature: -10 - 120 °C
  • Presetting: Yes
  • Presetting blockable: Yes, lead sealable
  • Shutoff: Yes
  • Measuring connection: Closed with blind plug
  • Body material: DZR brass
  • Connection actuator: M 30 x 1.5
  • Installation location: Supply or return
  • Thermal insulation shell: Available as accessory
Art.-Nr.: 1147306
EAN: 4026755421958
Hersteller: Oventrop GmbH & Co. KG
Technische Änderungen vorbehalten

Actuators

Aktor T 2P Electrothermal actuator, on/off control 230 V AC, normally closed, connection thread M 30 x 1.5
Item no. 1012415
Aktor T 2P Electrothermal actuator, on/off control 24 V AC / DC, normally closed, connection thread M 30 x 1.5
Item no. 1012416
Aktor T 2P Electrothermal actuator, on/off control 230 V AC, normally open, connection thread M 30 x 1.5
Item no. 1012425
Aktor T 2P Electrothermal actuator, on/off control 24 V AC / DC, normally open, connection thread M 30 x 1.5
Item no. 1012426
Aktor T 2P Electrothermal actuator, on/off control 230 V AC, normally closed with integrated auxiliary switch, connection thread M 30 x 1.5
Item no. 1012435
Aktor T 2P Electrothermal actuator, on/off control 24 V AC / DC, normally closed, M 30 x 1.5, cable length 2 m
Item no. 1012442
Aktor T 2P Electrothermal actuator, on/off control 230 V AC, normally closed, connection thread M 30 x 1.5, cable length 2 m
Item no. 1012452
Aktor T 2P Electrothermal actuator, on/off control 230 V AC, normally closed, connection thread M 30 x 1.5, cable length 5 m
Item no. 1012455
Aktor T 2P Electrothermal actuator, on/off control 230 V AC, normally closed, connection threadM 30 x 1.5, cable length 10 m
Item no. 1012459
Aktor M Electromotive actuator, on/off control, with short running time (3 s) 230 V AC, connection thread M 30 x 1.5
Item no. 1012710
Aktor M Electromotive actuator, on/off control, with short running time (3 s) 24 V AC / DC, connection thread M 30 x 1.5
Item no. 1012711
Aktor M Electromotive actuator, modulating with 0 - 10 V 24 V AC / DC, modulating proportional actuator, connection thread M 30 x 1.5
Item no. 1012717
Aktor M Electromotive actuator, modulating with 0 - 10 V, 24 V AC / DC, modulating proportional actuator, connection thread M 30 x 1.5
Item no. 1012725
Aktor M Electromotive actuator, 24 V AC / DC, modulating proportional actuator with position feedback, connection thread M 30 x 1.5
Item no. 1012726
Aktor M Electromotive actuator actuator, on/off and floating control 230 V AC, connection thread M 30 x 1.5
Item no. 1012729
Aktor M Electromotive actuator with Modbus RTU interface 24 V AC / DC, connection thread M 30 x 1.5, suitable for Cocon QTZ
Item no. 1012745
Aktor M Electromotive actuator with KNX interface 21 - 32 V (from KNX bus), connection thread M 30 x 1.5
Item no. 1012746
Electrothermal actuator "Aktor T 2P" "M NC", 120 V, closed with current "off", two point, M 30 x 1,5, may only be installed in approved countries outside the EU
Item no. 1012420

Dimensions

Dimensions of article

Length Width Height Weight
110 mm 93 mm 70 mm 1,03 kg

Packing units

Type Qty. Length Width Height Weight
Carton 1 130 mm 135 mm 125 mm 1,08 kg
Carton 10 700 mm 280 mm 230 mm 11,48 kg

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ETIM

Klassifizierung
ETIM 7.0 EC011312
Pressure-compensated control valve
Property Value
Height 63.8 mm
Material quality Dezincification resistant brass (DZR)
Suitable for glycol
Max. pressure difference 600 kPa
Volume flow 0.18 - 1.3
Suitable for liquids
Suitable for gases
Article compression class PN 25
Max. medium temperature (continuous) 120 °C
Min. medium temperature (continuous) -10 °C
Suitable for steam
Housing material Brass
Nominal inner diameter DN 20