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Technical datasheet of a centrifugal roof fan detailing construction, motor specifications, performance parameters, protection classes, and compatible accessories.
Year: 2026
Manufacturer: ruck Ventilatoren GmbH
Item number: 145036
Type: DVNI 280 D2 30
Material: Weather-resistant aluminium AlMg3 with 40mm mineral wool insulation
Motor: IEC three-phase, external to airstream, ball bearings with lifetime lubrication
Protection: IP55 motor, grille-protected air outlet
Accessories: Roof sockets (flat and sloped), inlet flanges, frequency controllers, potentiometers, constant pressure control system
Performance: Volumetric flow m³/h, Pressure increase Pa, Efficiency static max. 45.4%, Efficiency total max. 46.2%
Dimensions: 653x653x551 mm
Weight: 44.6 kg
Compliance: CE marking, EMC Directive 2004/108/EC, Machinery Directive 2006/42/EC, Ecodesign Directive 2009/125/EC
Price: 8 / 10 USD
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Centrifugal Roof Fan DVNI 500 E4 30 with Backward Curved Impeller and Vertical Discharge
Type: DVNI 500 E4 30
Item number: 145090
Manufacturer: ruck Ventilatoren GmbH
Address: Max-Planck-Str. 59, 7944 Boxberg, Germany
Telephone: 07930-9211300
Website: www.ruck.eu
Material: Weather-resistant aluminium AlMg3 with 40mm mineral wool insulation
Dimensions: 984x984x776 mm
Weight: 88.0 kg
Rated voltage: 230 V, 1~
Rated frequency: 50 Hz
Rated power: 1384 W
Max current: 7.6 A
Rated speed: 1370 min-1
Protection class motor: IP 54
Ambient temperature max.: 45 °C
Medium temperature max.: 120 °C
Inlet sound power level: 76 dB(A)
Outlet sound power level: 76 dB(A)
Efficiency static max.: 47.8 %
Efficiency total max.: 49.0 %
Standards: VDI 2052, CE marking EMC Directive 2004/108/EC, Machinery Directive 2006/42/EC, Directive 2009/125/EC (Reg.1253/2014/EU)
Accessories: DSF 450-10, DSF 450-12 up to 19, DSS 450-10, DSS 450-12 up to 19, DAP 450, DVK 400 10, DAS 400 F4, DAF 400, TEM 100, TEM 100G, TES 100
Micro Carrier Impeller Assembly for 15L and 36L Vessels
Year: 2026
Manufacturer: Bellco Glass, Inc.
Product Type: Laboratory Equipment and Glassware
Material: Type 1 Class A borosilicate glass, PTFE, Silicone
Compatibility: Bellco Micro Carrier Spin Flasks
SKU: 1965-31500
Components: Paddle, Plug, Magnet Holder, Magnet Holder Extension, Magnet
Support Services: Technical Support, Customer Service, Application Support, Hardware Support
Intended Use: Laboratory mixing and stirring in biotechnological applications
Quality Assurance: In-house QC policies and procedures
Centrifugal Roof Fan DVNI 500 E4 30 with Backward Curved Impeller and Vertical Discharge
Type: DVNI 500 E4 30
Item number: 145090
Manufacturer: ruck Ventilatoren GmbH
Address: Max-Planck-Str. 59, 7944 Boxberg, Germany
Telephone: 07930-9211300
Website: www.ruck.eu
Material: Weather-resistant aluminium AlMg3 with 40mm mineral wool insulation
Dimensions: 984x984x776 mm
Weight: 88.0 kg
Rated voltage: 230 V, 1~
Rated frequency: 50 Hz
Rated power: 1384 W
Max current: 7.6 A
Rated speed: 1370 min-1
Protection class motor: IP 54
Ambient temperature max.: 45 °C
Medium temperature max.: 120 °C
Inlet sound power level: 76 dB(A)
Outlet sound power level: 76 dB(A)
Efficiency static max.: 47.8 %
Efficiency total max.: 49.0 %
Standards: VDI 2052, CE marking EMC Directive 2004/108/EC, Machinery Directive 2006/42/EC, Directive 2009/125/EC (Reg.1253/2014/EU)
Accessories: DSF 450-10, DSF 450-12 up to 19, DSS 450-10, DSS 450-12 up to 19, DAP 450, DVK 400 10, DAS 400 F4, DAF 400, TEM 100, TEM 100G, TES 100
Supporting Information for N-Bordered Rylene Arches via Programmable Curved π-Extension
Year: 2026
Region / City: Not specified
Topic: Molecular Design, Synthesis, and Characterization of N-Bordered Rylene Compounds
Document Type: Scientific Research Paper
Organization / Institution: Not specified
Author: Not specified
Target Audience: Chemists, Researchers in Molecular Design and Synthesis
Effective Period: Not specified
Approval Date: Not specified
Modification Date: Not specified
Centrifugal Roof Fan DVNI 500 E4 30 with Backward Curved Impeller and Vertical Discharge
Type: DVNI 500 E4 30
Item number: 145090
Manufacturer: ruck Ventilatoren GmbH
Address: Max-Planck-Str. 59, 7944 Boxberg, Germany
Telephone: 07930-9211300
Website: www.ruck.eu
Material: Weather-resistant aluminium AlMg3 with 40mm mineral wool insulation
Dimensions: 984x984x776 mm
Weight: 88.0 kg
Rated voltage: 230 V, 1~
Rated frequency: 50 Hz
Rated power: 1384 W
Max current: 7.6 A
Rated speed: 1370 min-1
Protection class motor: IP 54
Ambient temperature max.: 45 °C
Medium temperature max.: 120 °C
Inlet sound power level: 76 dB(A)
Outlet sound power level: 76 dB(A)
Efficiency static max.: 47.8 %
Efficiency total max.: 49.0 %
Standards: VDI 2052, CE marking EMC Directive 2004/108/EC, Machinery Directive 2006/42/EC, Directive 2009/125/EC (Reg.1253/2014/EU)
Accessories: DSF 450-10, DSF 450-12 up to 19, DSS 450-10, DSS 450-12 up to 19, DAP 450, DVK 400 10, DAS 400 F4, DAF 400, TEM 100, TEM 100G, TES 100
Experimental Investigation of the Cyclic Response of Double Curved Surface Sliders Subjected to Radial and Bidirectional Sliding Motions
Year: 2018
Region / City: Pavia and Milano, Italy
Subject: Seismic isolation and frictional response of Curved Surface Sliders
Document Type: Research article
Institution: University of Pavia, Politecnico di Milano, EUCENTRE
Authors: Marco Furinghetti, Alberto Pavese, Virginio Quaglini, Paolo Dubini
Target Audience: Researchers and engineers in structural and seismic engineering
Funding: Italian Civil Protection, Executive Project 2014–2016, National Research Project DPC – ReLUIS 2014–2018
Keywords: Bidirectional motion, Friction coefficient, cyclic effect, Concave Surface Slider, Cloverleaf orbit
Tested Device: Double Curved Surface Slider (DCSS)
Methodology: Full-scale prototype experimental campaign with unidirectional and bidirectional tests
Contextual Description: Peer-reviewed experimental study detailing the cyclic frictional behaviour of Double Curved Surface Sliders under various load and motion conditions, providing quantitative evaluation of friction decay as a function of dissipated energy.
Topics: DVNI Impeller Curved