Waterway E-Series Pump Volute (315-1070) topsideoverlays A union check valve is

A union check valve is useful because it helps prevent reverse flow while also allowing the valve assembly to be removed more easily for maintenance or replacement

Installed in the proper Gunite application

even if the rest of the spa still seems in decent condition

When internal flow-guiding parts begin to fail

Waterway E-Series Pump Volute (315-1070) topsideoverlays A union check valve isThe Waterway 315 1070 E Series pump volute is designed for compatible applications. A volute like this is useful because it forms the main water directing housing around the impeller, helping restore the pumps internal flow path and wet end structure when the original housing has become damaged. Volutes are major pump components, so using the correct Waterway replacement can make a big difference in how cleanly a rebuild comes together. This part is a