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Cocon QTZ Pressure independent control valve with external thread PN 25
DN 20, G 1, 250-1800 l/h, with two mounted Classic measuring valves and mounted measuring orifice, 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: External thread
  • Connection size: G 1
  • 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: Yes
  • Measuring valve: Classic
  • Body material: DZR brass
  • Connection actuator: M 30 x 1.5
  • Installation location: Supply or return
  • Thermal insulation shell: Available as accessory
Art.-Nr.: 1144966
EAN: 4026755421910
Hersteller: Oventrop GmbH & Co. KG
Technische Änderungen vorbehalten

Dimensions

Dimensions of article

Length Width Height Weight
107 mm 103 mm 148 mm 1,32 kg

Packing units

Type Qty. Length Width Height Weight
Carton 1 125 mm 145 mm 145 mm 1,6 kg
Carton 10 390 mm 295 mm 310 mm 16,56 kg

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ETIM

Klassifizierung
ETIM 7.0 EC011312
Pressure-compensated control valve
Property Value
Material quality Dezincification resistant brass (DZR)
Suitable for glycol
Volume flow 0.25 - 1.8
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