Type RN (Galvanized)

Provides constant volume regulation of delivered airflow rate regardless of inlet static pressure variations

  • 8 Nominal Sizes from 3″(80 mm), 4″(100 mm), 5″(125 mm), 6″(160 mm), 8″(200 mm), 10″(250 mm), 12″(315 mm), 16″(400 mm)
  • Optional D2 Lip Seal at both ends for tight seal
  • Casing and damper are of galvanized steel construction
  • Control component: manual operation
  • Optional D Acoustic cladding made of galvanized sheet steel for the reduction of case-radiated noise.  Mineral wool lining

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SKU: RN Category: Tag:

Description

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FOR THE PRECISE CONTROL OF CONSTANT VOLUME FLOW RATES

Circular volume flow controllers for constant air volume systems, mechanical self-powered, without external power supply, suitable for supply or extract air, available in 8 nominal sizes. Ready-to-commission unit consists of the casing containing a damper blade with low-friction bearings, bellows, external cam plate and leaf spring. Volume flow controllers without actuators are factory set to a reference volume flow rate (customers can set the required volume flow rate on-site).

  • Provides constant volume regulation of delivered airflow rate regardless of inlet static pressure variations
  • Suitable for supply or extract air
  • Volume flow rate can be set using an external scale, no tools required
  • High control accuracy of volume flow
  • No on-site test measurements required for commissioning
  • Any installation orientation; maintenance-free
  • Casing air leakage to EN 1751, class C

Technical Data

  • 8 Nominal Size is 3″(80 mm), 4″(100 mm), 5″(125 mm), 6″(160 mm), 8″(200 mm), 10″(250 mm), 12″(315 mm), 16″(400 mm)
  • Flow rate range:
    • 3″ = 23 to 95 CFM
    • 4″ = 47 to 191 CFM
    • 5″ = 74 to 297 CFM
    • 6″ = 127 to 509 CFM
    • 8″ = 191 to 763 CFM
    • 10″ = 307 to 1229 CFM
    • 12″ = 487 to 1949 CFM
    • 16″ = 742 to 2966 CFM
  • Minimum differential pressure: 50 Pa or 0.2″ wc
  • Maximum permissible differential pressure: 1000 Pa or 4″ wc
  • Suitable for airflow velocities of up to 12 m/s or 2350 fpm
  • Control component: manual operation

Materials and Surfaces

  • Casing and damper are of galvanized steel construction (min. 22 ga.)
  • Polyurethane bellows
  • Plain bearings with PTFE coating
  • Control Leaf spring made of stainless steel

Connection Type

  • Spigot with groove for lip seal, suitable for connecting ducts according to circular ducts to EN 1506 or EN 13180

Literature Downloads

Optional equipment and accessories

  • Optional D2 Lip Seal at both ends for tight seal
  • Actuator for switching between set-point values
  • Optional D Acoustic cladding made of galvanized sheet steel for the reduction of case-radiated noise.  Mineral wool lining
  • Secondary silencer Type CA, CS or CF for the reduction of air-regenerated noise
  • Hot water heat exchanger Type WL and electric air heater Type EL for reheating the airflow

Additional information

Weight 3.1 lbs
Dimensions 12.25 × 3.125 × 7.125 in
Size

3 inch, 4 inch, 5 inch, 6 inch, 8 inch, 10 inch, 12 inch, 16 inch

Lip Seals - D2

No D2 Lip Seals, Yes D2 Lip Seals

Acoustic Cladding - D

No D Acoustic Cladding, Yes D Acoustic Cladding