CronoBloc-BL
Monobloc pump
Wilo-CronoBloc BL – the reliable glanded pump with high efficiency
- Energy-efficient due to state-of-the-art pump hydraulics and the use of IE3 motors
- Cataphoretic coating of all cast components for high corrosion resistance and a long service life.
- Universal use in diverse applications thanks to different impeller materials, several motor options as well as different mechanical seals
- Easy installation due to standard pump support feet and optional supporting blocks
- Easy maintenance and user-friendly design with optional “back pull-out” design and cartridge mechanical seal for large pump types

| Product description | Number of poles | MEI | IE | Nominal flange diameter | Mechanical seal | Rated power P2 | Gross weight, approx. m | Article number | GRD group |
|---|---|---|---|---|---|---|---|---|---|
CronoBloc-BL 50/295-5,5/4 | 4 | ≥ 0.4 | IE3 | DN 50 | AQ1EGG | 5.5 kW | 239 kg | 9140219 | 13 |
CronoBloc-BL 50/305-7,5/4 | 4 | ≥ 0.4 | IE3 | DN 50 | AQ1EGG | 7.5 kW | 245 kg | 9140217 | 13 |
CronoBloc-BL 50/315-11/4 | 4 | ≥ 0.4 | IE3 | DN 50 | AQ1EGG | 11 kW | 266 kg | 9140216 | 13 |
CronoBloc-BL 65/105-0,55/4 | 4 | ≥ 0.4 | IE2 | DN 65 | AQ1EGG | 0.55 kW | 62 kg | 9132649 | 12 |
CronoBloc-BL 65/115-0,75/4 | 4 | ≥ 0.4 | IE3 | DN 65 | AQ1EGG | 0.75 kW | 64 kg | 9132648 | 12 |
CronoBloc-BL 65/125-1,1/4 | 4 | ≥ 0.4 | IE3 | DN 65 | AQ1EGG | 1.1 kW | 75 kg | 9132647 | 12 |


Design
Glanded pump in close-coupled design with flange connectionApplication
For pumping heating water (in accordance with VDI 2035), water-glycol mixtures, cooling water and chilled water without abrasive substances in heating, chilled water and cooling water systems.Type key
Example | BL 40/160-4/2 |
BL | Close-coupled end suction pump |
40 | Nominal diameter DN of the pipe connection (pressure port) |
160 | Nominal impeller diameter |
4 | Rated motor power P2 in kW |
2 | number of poles |
Technical data
- Permissible temperature range of -20 °C to +140 °C
- Mains connection 3~400 V, 50 Hz (others on request)
- IP rating IP55
- Nominal diameter DN 32 to DN 150
- Max. operating pressure 16 bar (optionally 25 bar on request)
Materials
- Pump housing and lantern: Standard: EN-GJL-250; optional: Spheroidal cast iron EN-GJS-400-18-LT (depending on type)
- Impeller: Standard: EN-GJL-200; special version: Bronze CuSn 10 stainless steel 1.4408 (depending on type)
- Shaft: 1.4122
- Mechanical seal: AQEGG; other mechanical seals on request
Construction
Single-stage low-pressure centrifugal pump in close-coupled design, with axial suction port and radially arranged pressure port with
- Mechanical seal
- Flange connection with pressure measuring connection R 1/8
- Lantern
- Coupling
- IEC standard motor
Scope of delivery
- Pump
- Installation and operating instructions
Options
- ...-L1 variant with bronze impeller (at additional charge)
- …-L4 variant with stainless steel impeller (at additional charge)
- ...-H1 variant with housing made of spheroidal cast iron (at additional charge)
- ...-P6 variant with "back pull-out design and cartridge mechanical seal (at additional charge)
- Other voltages and frequencies as well as ATEX approval on request
Accessories
- Bases (pump housing and motor) for installation on a base
- PTC thermistor sensor, PTC thermistor tripping relay
- Special motors
- Special mechanical seals
- SC-HVAC, CC-HVAC control systems and switchgears
Filtered by
Take advantage of the latest replacement guide
The current replacement guide on all glandless pumps for heating and drinking water applications makes choosing the right pump easier for you. Here, you will find a suitable new Wilo pump for all known pumps built after 1975.
After entering your old pump data, select the current pump type.


