Pressure independent control valve for dynamic hydronic balancing of heat exchangers, for example fan coils or air conditioning units 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.
Two-way valve, with secured, lead sealable, infinitely adjustable flow limitation. Direct setting in m³ per hour. Readability of the set value independent of the handwheel position.
Valve body and wetted parts made of bronze, dezincification resistant brass, stainless steel, EPDM or PTFE. Maintenance-free spindle sealing. Supplied with two Classic measuring valves.
Cocon QTR are characterized by easy adjustability, compact dimensions and best control quality.

• Main function: Pressure independent control valve
• Medium: Water, Water-glycol mixture
• Pressure rating: PN 16
• Nominal size: DN 40
• Connections: Internal thread
• Connection size: NPT 1 1/2
• Control range: 1,500 - 7,500 l/h
• Differential pressure p1-p3: 20 - 400 kPa
• Kvs: 11.5
• Operating temperature: -10 - 120 °C
• Max. differential pressure: 4 bar
• Presetting: Yes
• Presetting blockable: Yes, lead sealable
• Presetting indicator: Yes
• Shutoff: Yes
• Measuring connection: Yes
• Measuring valve: Classic
• Measuring method: Differential pressure p1-p3
• Body material: Bronze
• Type: Y-pattern
• Connection actuator: M 30 x 1.5
• Control stroke: 10 mm
• Installation location: Supply or return
• Thermal insulation shell: No