VOLUME FLOW CONTROLLER
VRC-N 237 - New

constant, self-regulating - circular - for lower volume flows

  • With new optimized adjustment unit!
  • Mechanically self- regulating without auxiliary power
  • Casing laser-welded
  • Push-fit ends according to DIN EN 12237 with Lipstar double lip sealing
  • Ex works with basic setting or adjusted to the volume flow requested by the customer
  • Especially suitable for visible installation

Product advantages

  • Well readable scale with volume flows indicated in m³/h and cfm
  • Change of volume flow in next to no time without tools via the newly developed adjustment unit
  • Adjustment unit ergonomically designed and handy

Product information:

  • the constant volume flow controller works mechanically self-regulating without auxiliary power
  • Ex works with basic setting or adjusted to the volume flow requested by the customer
  • The preset airflows can be changed subsequently by the customer just by manually turning the adjustment unit. There are no tools required!
  • Push-fit ends according to DIN EN 12237 with Lipstar double lip sealing
  • Casing made of galvanized steel
  • Adjustment unit made of solid plastic
  • Control plate and vibration damper made of Aluminium
  • Ventilation test of every device on our test bench
  • Vertical or horizontal mounting in the duct system irrespective of the position

Technical data

  • Nominal diameter: 80, 100, 125, 150, 160, 200, 250 mm
  • Volume flow range: 25-800 m3/h (15-471 cfm)
  • Differential pressure range: 50–500 Pa
  • Ambient air temperature: -30 °C bis +80 °C
  • Casing leakage according to DIN EN 1751, Klasse C
  • Air velocities from 1,4-4,5 m/s
  • Recommended air velocity inside the duct system ca. 3,0 m/s

Manufacturer:    AEROTECHNIK E. Siegwart        Type: VRC-N, no. 237

The circular constant volume flow controller for regulating the constant airflow in ventilation systems, self-regulating, mechanical, for lower volume flows, in a compact form with push-fit ends with lip sealing made from EPDM. Air flow factory preset and tested for function, manually adjustable by the customer via a scale and adjustment unit, high accuracy, smooth running control plate in airtight position, pressure difference range from 50 Pa to 500 Pa, air flow 3:1; operating temperature range –30°C to +100°C, non-ageing, maintenance-free and irrespective of position.

Laser-welded housing made of galvanized steel, without overlapping; control plate and vibration damper made of aluminum, internal friction bearings made of PTFE; adjustment unit made of plastic.

Airtightness of the push-fit ends according to DIN EN 12237 class D