Air Make Up Units for Valve and Fitting Finishing
Coating valve bodies and fittings can place steady demand on booth exhaust, powder collectors, ovens and general plant ventilation. Double D Mechanical installs, relocates and connects air make up units that support finishing airflow, temperature control, duct routing, controls and service access.
Discuss your installationReplacement Air for Coating Operations
Spray booths and exhaust systems remove air from the finishing area whenever they run. An air make up unit helps replace that air in a controlled way so doors, filters and booth openings are not forced to make up the difference. The review should consider all connected exhaust sources, not only one booth.
Supply Placement Near Work Zones
Air should enter the space without disturbing powder application, liquid spray patterns or masking work. Diffuser locations, duct discharge direction and unit controls should be coordinated with booth openings, operator positions, racks and nearby ovens.
Tempered Air and Utility Loads
Heated or conditioned supply air can help stabilize finishing conditions around metal parts that may be stored in cooler plant areas. Fuel, electrical service, condensate where applicable and control wiring should be planned with roof or wall openings and equipment service clearances.
Controls With Booth Exhaust
The air make up unit should operate in step with the exhaust equipment it supports. Start signals, interlocks, pressure switches and shutdown behavior need to be reviewed so operators are not relying on manual habits to keep airflow balanced.
Walkthrough Preparation Items
Before a site visit, gather exhaust fan data, booth and collector locations, roof structure information, available utilities, ceiling height and the plant's preferred equipment location. Photos of wall and roof areas help identify duct and service routes.
Frequently asked questions
Why add air make up for a valve finishing area?
It replaces air removed by booths, collectors and exhaust fans, helping maintain stable airflow and reducing unwanted drafts through doors or adjacent production spaces.
Can an air make up unit serve more than one booth?
It can, depending on total exhaust demand, control strategy, duct layout and how the equipment is used. Simultaneous operation needs to be reviewed before sizing or relocation.
Where should supply air enter the area?
Supply air should avoid blowing directly into spray patterns, powder clouds, masking tables or freshly coated parts. Placement is based on booth orientation, operator positions and duct routing.
What details help with a first review?
Useful details include exhaust fan sizes, booth layout, roof or wall conditions, available utilities, current pressure issues and photos of the finishing space.