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||1450 1/min|
|Rated current IN||22 A|
|Power factor cos φ||0.80|
|Motor efficiency ηM 50%||90.1 %|
|Motor efficiency ηM 75%||91.6 %|
|Motor efficiency ηM 100%||91.4 %|
|Pump housing||Grey cast iron|
|Impeller||Grey cast iron|
|Lantern||Grey cast iron|
|Pipe connection on the suction side DNs||DN 125|
|Pipe connection on the discharge side DNd||DN 125|
|Product description||CronoTwin-DL 125/250-11/4|
|Net weight, approx. m||455 kg|
Installation and operating instructions
With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.
Wilo-Live Assistant Service
The Wilo-Live Assistant is a technical advisor at your side during pump service. By using the Wilo-Live Assistant, our expert advisers can support you in the boiler or equipment room via video transmission – live and in real time. You use your smartphone to show the installation set-up, while the Wilo expert follows everything on their screen. They can see the components as well as other details and can thus determine where the fault or breakdown originates. We prevent downtime and ensure operational reliability of your pumps and systems!
The Wilo-Live Assistant includes:
Supervision Glanded pumps
Wilo supports during the concept phase to ensure quality work and cost efficiency. Our competent and qualified Wilo Service will support you with recommendations and technical advice throughout the entire project.
Commissioning Glanded pumps
For perfect functioning of the pump(s) / system(s), it is recommended to have the commissioning carried out by the works' own WILO SE Customer Service Department. Optimum setting and efficient operation of the system are ensured as a result. Commissioning is comprised of the following points:
The price for commissioning only applies to system(s) which have been installed in accordance with the installation and operating instructions and state-of-the-art technology. No costs for any materials which may be required are included.
More suitable services
Servicepaket L Glanded pumps
The Wilo-Service package L includes:
Optional add-on services:
Service Package M Glanded pumps
The Wilo-Service package M includes:
Optional add-on services:
Service Package S Glanded pumps
The Wilo-Service package S includes:
Optional add-on services:
Extended warranty glanded pumps
In combination of a new pump or system Wilo offers an extended warranty of up to five years in combination with commissioning and maintenance by the Wilo Service.
Extended warranty includes:
Installation Glanded pumps
The Wilo service offers installation of our pumps or pumping systems. We offer an end-to-end process from gathering information on site to installing our product in the overall plant. An optimal installation set-up and the interaction of various individual factors lay the foundation for long-term operational safety.
Maintenance BASIC Glanded pumps
Maintenance COMFORT Glanded pumps
Maintenance PREMIUM Glanded pumps
System Optimisation Glanded pumps
The Wilo Service offers proactive system optimisation by optimising settings and doing minor adjustments to ensure operational reliability. System Optimisation includes among others:
Energy Solutions Glanded pumps
Wilo Service offers a proactive support to point out possible energy savings. Our service creates an overview of all installed assets to show how the energy consumption of pumps or systems can be reduced. We offer targeted consultancy and analysis, including the involvement of subsidies as well as comprehensive support around the changeover to high-efficiency technologies. Wilo-Energy solution includes:
Repair Glanded pumps
Wilo Service draws on their competence and experience while consulting on site to decide whether the pump can actually be repaired on site or has to be sent in for a factory repair. Wilo also provides spare parts or a replacement pump to restore the operational reliability of the system.