readiescards Posted July 6, 2017 Share Posted July 6, 2017 3 bits of plastic with each feed vent. What for please? Link to comment Share on other sites More sharing options...
jack Posted July 6, 2017 Share Posted July 6, 2017 They might be for locking the vent at the correct position. I believe they shouldn't be easily adjustable once balanced. Link to comment Share on other sites More sharing options...
bpc ventilation Posted July 7, 2017 Share Posted July 7, 2017 The plastic fittings are used to direct the airflow away from an area, To use them you need to screw the valve out by approx 80% and slide into the slots on the top of the valve, when commissioning the system you adjust the valve, lock with locknut and fit valve in the desired direction. Gary BPC Ventilation 6 Link to comment Share on other sites More sharing options...
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