Wilo CronoTwin-DL
Wilo CronoTwin-DL 80/120-4/2 400V – 2121050
- Established 1975
- Trusted by thousands of customers
Wilo CronoTwin-DL 80/120-4/2 in-line pump, 400 V three-phase
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.
4 kW motor. DN 80 connection, 400 mm port to port.
More about this product
Overview
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.
Specification
| Model | Wilo CronoTwin-DL 80/120-4/2 |
|---|---|
| Part number | 2121050 |
| Series | CronoTwin-DL |
| Supply | 400 V three-phase, 50 Hz |
| Rated power P2 | 4 kW |
| Rated current | 7.8 A |
| Speed | 2900 rpm |
| Poles | 2 |
| Max. operating pressure | 16 bar |
| Fluid temperature | -20 °C to 140 °C |
| Max. ambient temperature | 40 °C |
| Dimensioning note | 16 bar to 120 °C, 13 bar to 140 °C |
| Minimum efficiency index (MEI) | ≥ 0.4 |
| Motor efficiency class | IE3 |
| Protection class | IP55 |
| Insulation class | F |
| Motor protection | None integrated |
| Power factor | 0.84 |
| Motor efficiency at full load | 88.1 % |
Materials
| Pump housing | Grey cast iron |
|---|---|
| Impeller | Grey cast iron EN-GJL-200 |
| Shaft | Stainless steel |
| Mechanical seal | AQ1EGG |
| Lantern | Grey cast iron |
Dimensions and weight
| Pipe connection, suction | DN 80 |
|---|---|
| Pipe connection, discharge | DN 80 |
| Port-to-port length | 400 mm |
| Length × width × height | 694 × 674 × 400 mm |
| Net weight | 153 kg |
Frequently asked questions
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Data Sheet PDFDownload
Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
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Frequently Asked Questions
Quick answers to common questions about the Wilo CronoTwin-DL 80/120-4/2 400V – 2121050. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What types of Wilo pumps are available?
Wilo manufactures circulators and other pumping solutions for heating, cooling, water supply and building services applications.
What is a Wilo circulator pump used for?
A Wilo circulator moves water around a heating or cooling circuit to maintain the required flow through the system.
How do I select a replacement Wilo pump?
Match the existing model or confirm head, flow, installation length, connections, voltage and control requirements before ordering.