希而科贸易（上海）有限公司-德国Silkroad24 GmbH 中国***

联系人：张敏 （业务部销售经理）

TEL:13585754584 021-58375543-829

FAX:021-61179684

EMAIL:zm@

***:1784691511

MSN:zhangsir_goal@

希而科优势代理德国WITT & SOHN AG风机

产品系列：

products

comprehensive ranges

WITT&SOHNoffer one of the most comprehensive industrial fan ranges of any manufacturer in the world. The selection charts overleaf, for both 50 and 60 cycles, show some of the range of axial and centifugal fans ***ailable with direct drive. TheWITT&SOHNfan design approach offers multiple impellers for each fan type allowing the most economical arrangement to be confidently selected. Even if applicati*** necessitate change, a different impeller can in most cases be used without h***ing to change the whole fan.

Direct DriveVirtually all possible working points with a volume flow rate from 100 m³/h up to 1,000,000 m³/h and pressure increases from 100 Pa up to 50,000 Pa can be offered with direct drive and the highest efficiency.

V-belt drivesFor V-belt drive applicati***WITT&SOHNoffer many alternatives as standard.

Other drivesWitt fans are also manufactured with drives via a coupling; or with pneumatic, hydraulic or water motors.

MATERIALS

The continued exposure to applicati*** with the highest performance requirements such as nuclear power plants, n***al ships, chemical installati*** etc. has enabledWITT&SOHNto gain extensive experience with all kinds of materials.

Mild steel, aluminium and various speciality steels are used as standard, although more unusual materials such as titanium are increasingly being specified.

Standard specificati***

Offered as standard are a wide selection of outlet positi***, casing geometries, casing thicknesses, materials and impellers for the various fan types.

AXIAL-FLOW FANS

Inlet sizes250 to 2800 mm.
Casing thickness1,5 to 16mm.
Impeller typesN, M, X, Y (adj.pitch).
Motor frame sizes63 to 400.
Drive typesDirect, V-belt or coupling.
Positi***A,AU,AD,B,BD,BU (Eurovent).
Casing designsShort/long casing, swing out, w/wo shaped inlet.
Surface treatmentPrimer; finish; hot-dip galvanised, as required.
Materials - ImpellersCorrosion resistant cast aluminium.
Materials - CasingsSteel, aluminium, special alloys.
Special designsFlame-proof; shock-proof; earth-quake proof; high temperature, as required.

CENTRIFUGAL FANS

Inlet sizes63 to 2500 mm.
Casing thickness1,5 to 20 mm.
Casing pressure typesRNN & LRZ (Low pressure). PRZ & MRZ (Medium pressure). HRZ (High pressure). SRZ (Ultra-high pressure).
Impeller typesMin. 6 types per casing incl. dust impellers.
Motor frame sizes63 to 450.
Drive typesDirect, V-belt or coupling.
MaterialsSteel; aluminium; stainless steel; titanium; spec. alloys.
Surface treatmentAs axial flow fan.
Outlet positi***To Eurovent.
Special designsFlame-proof; shock-proof; extreme temperature; gas-tight; rubberised; decontaminable; earth-quake proof; corrosion resistant, as required.

ACCESSORIES

• shaped inlets
• fire dampers
• protection grills
• mushroom cowls
• vibration attenuators
• jet cowls
• flexible connecti***
• counter flanges
• silencers
• variable inlet vanes
• inlet/outlet dampers
• acoustic enclosures
• insulati***
• monitoring instrumentation