A Review Of hvac system in pharmaceutical industry
GRD stands for Grille, Register and Diffuser. GRD signifies a part is either a grille, a sign up or maybe a diffuser. This is a generic expression applied to describe anything that’s source/return and exhaust/intake air.BDD means Backdraft Damper. BDD is applied to ensure air flows in one course. It prohibit air from flowing during the reverse co