This repair kit is engineered to give you a cost-effective solution for problems with your Mansfield 400 and 500 series hydrants. With a durable construction that is ideal for commercial or residential settings, this kit includes the essential ingredients that let you quickly fix the vacuum breaker assembly in your unit. Designed to provide the same performance and results as original equipment, this vacuum breaker repair kit is an affordable way to replace units that are damaged or worn from the aging process.