The Hayward multiport valve is designed for compatible filtration systems that need dependable six-position control in a 2 inch format. A valve like this is useful because it lets the operator direct water through multiple filter functions from one central control point, making both routine use and maintenance more manageable.This replacement is especially useful when the original valve is leaking, sticking, cracked, or no longer shifting confidently between positions. Replacing it can help restore cleaner filter control and improve overall system reliability.The SP071621 is a practical replacement for compatible Hayward filtration systems that need renewed six-position valve performance and dependable water-routing control. Hayward multiport valve 2 inch, six-position design Designed for dependable filter mode control Useful when the original valve is leaking or sticking Supports cleaner and more dependable system operation