Impeller with polyester blades WENTECH

Construction

• Standard diameters from 1250mm
• Cast aluminum or epoxy coated steel center boss, with key-way
• Drive plate made from hot dip galvanized steel
• Blades fixation made from cast aluminum or hot dip galvanized steel
• Glass fibers reinforced polyamide blades.
• RAL7035 or 5015 as standard blade’s color
• Bolts and nuts made from hot dip galvanized steel or Stainless steel A2 70
• Workings temperature from -40° until +65°C
• Reinforced leading edge
• Adjustable pitch angle at standstill (except type H)
• Airflow selectable, motor <> impeller
• Balanced following the norm ISO 1940-1 quality G6.3 (in one piece until a Ø2150mm)

Profiles

• Profile 5
  Specifically designed for high capacities
  Diameter until 20m
  Peripheral velocity until 80m/s
• Profile 7
  Specifically designed for the performances
  Diameter until 36ft
  Peripheral velocity until 75m/s
• Profile 14
  Specifically designed for a low noise
  Diameter until 22ft
  Peripheral velocity until 53m/s
• Profile 15
  Specifically designed for noise level, on average 3dB quieter than profile 14
  Diameter from 3ft until 8ft, in 3 or 4 blade design
  Peripheral velocity until 54m/s

Alternative

• HT: designed for temperatures up to 120°C
• KO: acid and alkali resistant
• R: reinforced execution
• SE: leading edge protection in stainless steel for speeds >62m/s (or on demand)
• SS: stainless steel center boss and drive plate
• SG: self-extinguishing execution

Application

Mostly used for special applications more specifically for cooling towers, condensers, heat exchangers…

Atex

The impellers are also available in Atex execution, AS/SG: antistatic and self-extinguishing execution.