For preventing backflow and pollution in plumbing systems. Durable and simple to install this crucial component protects the safety and efficiency of your water supply making it suitable for both domestic and commercial use.The 3/4 inch BSP Male Vacuum Breaker is an essential component of any plumbing system providing dependable protection against backflow and contamination. Its long-lasting design and simple installation make it an ideal choice for esidential and commercial applications. This practical and dependable vacuum breaker will protect the integrity of your water supply.