Atmos BST
Monobloc pump
The universal single-stage centrifugal pump for many applications in heating, cooling and industrial circulation systems.
- Ultra-modern pump hydraulics and the IE3 motor save energy
- Various impeller materials, multiple motor options and a wide range of mechanical seals enable universal deployment in many different applications
- Block construction and pump feet enable easy installation
- Hydraulic components made of stainless steel provide high resistance to corrosion and long service life

Wilo-Atmos BST Flange
Number of results: [134]
Nominal flange diameter
Mechanical seal
Rated power P2
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Wilo-Atmos BST
Design
Glanded pump in close-coupled design with flange or threaded 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
Beispiel | Atmos BST 32/160-1,1/2-V4 |
Atmos | Product Family |
BST (Block Stamped) | Series |
32 | Nominal diameter DN of pressure port in mm |
160 | Nominal diameter of impeller in mm |
1,1 | Rated Power P2 in kW |
2 | Number of Poles |
-V1 | 3~230/400 V, 50Hz |
-V2 | 3~400/690 V, 50Hz |
-V4 | 1~230 V, 50 Hz |
-H12 | Pump housing 1.4401 |
Technical data
- Permissible temperature range of -20 °C to +120 °C
- Mains connection 1~230 V, 3~400 V, 50 Hz (others on request)
- IP rating IP55
- Nominal diameter DN 25 to DN 80
- Max. operating pressure 10 bar
Materials
- Pump housing: 1.4301, 1.4401
- Impeller: 1.4301, 1.4401
- Pump shaft: 1.4301, 1.4401
- Mechanical seal: B3Q1EF, B3Q1EG; 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
- IEC standard motor
Scope of delivery
- Pump
- Installation and operating instructions
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Datasheet and documentation
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