Field Instruments

General

The pressure independent control valve “Cocon QTR” is designed to be installed in central heating and cooling systems with closed water circuits (like fan convectors (fan coil units), chilled ceiling modules, induction air systems, cooling and heating zones) for an automatic flow control (hydronic balancing) and the control of another variable (e.g. room temperature) by modifying the flow rate with the help of actuators (see next page). When used in combination with actuators, the setting sleeve (spanner size 17) has to be unscrewed. The installation advice for the actuators are detailed in the respective installation and operating instructions.

Features

•   presetting of the nominal values even with mounted actuator
• optical display of the set nominal value even with mounted actuator
• excellent optical display of the presetting in any installation position
• nominal values can be read off in m3/h without conversion
• presetting can be locked and lead sealed
• constant high valve authority
• installation can be optimised by measuring the regulating pressure
• linear characteristic line if actuator driven

Specifications

• Make : Oventrop
• Model: 1146174
• Size: DN 50
• Connection: G 2 ⅜,
• Flow: 2.5 - 10 m³/h
• Max. operating temperature: +120 °C
• Min. operating temperature: -10 °C
• Max. operating pressure:  25 bar (2500 kPa) (1146112 and   1143116)
• Max. differential pressure:  4 bar (400 kPa) 6 bar (600 kPa) for item no. 1143116
• Fluid:  Water or mixtures of water and ethylene/propylene glycol (max. 50 %), ph value 6.5-10

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