Hayward S360 Bulkhead Pre-1999 (SX311F) couplings A volute like this is

A volute like this is useful because it forms the chamber around the impeller and directs water through the pump

The 621460 is a practical repair part when a compatible 1-1/2 inch Waterco top or side mount valve needs the correct gasket to restore dependable internal sealing

This model has practical value because the LX platform combines recognizable performance with broad service-part support across wet ends

or go missing during pool light service

Hayward S360 Bulkhead Pre-1999 (SX311F) couplings A volute like this isThis pre 1999 bulkhead fitting is intended for compatible Hayward S360 sand filter systems that require the earlier style connection component. Bulkhead fittings are critical sealing and plumbing transition points, so correct fitment matters during filter repairs. Use this part when servicing older equipment where the existing bulkhead is cracked, leaking, or damaged during disassembly. It helps maintain the filters plumbing integrity and supports a