In-line twin-head pump with two single-stage glanded centrifugal pumps in the same housing with switchover valve, for pipe installation or installation on a base. Housing blind flange and mounting brackets available at additional charge. Low-vibration and low-noise monobloc design with lantern and rigidly connected standard flange motor (standard motor). With forced-flow circulation, bidirectional bellows mechanical seal and cavitation-reducing impeller. Flanges with pressure measuring connections R 1/8. The pump housing and lantern are cataphoretic-coated.
Motors in IE3 technology as standard. Pump with motor ≥ 5.5 kW are equipped as standard with a PTC thermistor sensor for motor protection.
The motor terminal box ≤ 7.5 kW can be made of metal or plastic. If a metal terminal box is absolutely necessary, please order the appropriate special variant. The motor terminal boxes > 7.5 kW are always made of metal.
|Fluid temperature T||-20 °C|
|Ambient temperature T||-15 °C|
|Maximum operating pressure PN||16 bar|
|Note on dimensioning||16 bar to 120 °C, 13 bar to 140 °C|
|Minimum efficiency index (MEI)||0.4|
|Motor efficiency class||IE3|
|Mains connection||3~400 V, 50 Hz|
|Voltage tolerance||±10 %|
|Rated power P2||11000 W|
|Rated speed n||2900 1/min|
|Rated current IN||20.5 A|
|Power factor cos φ||0.85|
|Motor efficiency ηM 50%||89.4 %|
|Motor efficiency ηM 75%||91 %|
|Motor efficiency ηM 100%||91.2 %|
|Pump housing||Grey cast iron|
|Lantern||Grey cast iron|
|Pipe connection on the suction side DNs||DN 50|
|Pipe connection on the discharge side DNd||DN 50|
|Product description||CronoTwin-DL 50/210-11/2-S1|
|Net weight, approx. m||308 kg|