Iris Circular Duct Damper

The Iris Damper is an ideal air flow regulator and measuring device for circular ducts. Accurate control, smooth and quiet air flow and reliable measuring results are achieved by the special iris construction.

Important Features:

• Easy to adjust airflow measuring with scale
• Low noise levels
• Manometer connections
• Easy to calibrate airflow
• Allows easy cleaning of ductwork
• Excellent Airtightness
• Uniform air flow rate occurs in the duct cross sections due to the decreasing opening structure
• Control handle is resistant to fracture, adjusted by provided switch

Technical Features

• Measurement accuracy is +5%
• Operation temperature is between -10°C and +80°C
• Manometer connections allow measurement of differential pressure in dampers
• Available in a range of 6 different sizes
• 100% free area when fully opened
• Popular Models in stock: 100mm, 125mm & 200mm
• Manufactured from hot dipped galvanised steel sheet and equipped with an adjustment scale and measuring connections
• The tamper proof control knob is adjusted with a spanner (the 80mm dia. has a lockable lever)
• Spigots are fitted as standard with rubber gaskets.

Available sizes made to order:

Dimensions:
Ød (mm): Iris damper nominal diameter

ØD (mm): Iris damper flange diameter

L (mm): Iris damper length

Installation:

For the best results the Iris Damper should be installed in straight runs of ductwork. The damper may be fixed to ducting with rivets or self-tapping screws. We recommend joints are sealed with sealant to ensure an airtight connection. Flexible ducting may be fixed to the damper using banding or clips.

Benefits of working with BPC Ventilation

• Number 1 leading MVHR and ventilation system specialists
• Large range of systems for domestic and commercial applications
• Authorised distributors
• In-house design service
• Full technical support
• 1000s of products in stock in our own warehouse
• Large showroom with working units on display
• Installer network throughout the UK and Ireland
• All systems comply to all the latest building control regulations