The series 461 valve is NSF 61/372-approved to meet the new low-lead requirements and is rated for cold and hot potable water service. Series 461 valves are designed for pressure ranging from full vacuum to 300 psi (2,065 kPa) and for bidirectional, dead-end services to full working pressure. The valves are available in 3” to 8” sizes (80 to 200 mm).