The Fisher 3991 Atmospheric Vacuum Breaker Deck Mount 1/2″ F Inlet is an essential component in plumbing systems, designed to prevent backflow and protect potable water supplies. This model is tailored for deck mounting, making it a versatile choice for various installations where a secure and stable attachment is required. Its 1/2″ F inlet ensures compatibility with a range of plumbing configurations, providing flexibility in diverse applications. The vacuum breaker is engineered to withstand a maximum static pressure of 200 PSI, highlighting its robust construction and reliability in demanding environments. This feature is particularly valuable for commercial or industrial settings where consistent water flow and pressure are critical. The Fisher 3991s design facilitates easy installation and maintenance, crucial for reducing downtime and ensuring operational efficiency. Additionally, its atmospheric vacuum breaker mechanism is a trusted technology for safeguarding against contamination, making it a preferred choice in sectors such as healthcare, hospitality, and manufacturing where water safety is paramount. With its combination of durability, functionality, and compliance with safety standards, the Fisher 3991 Atmospheric Vacuum Breaker is a critical component in maintaining the integrity and safety of water systems across various industries.