Pentair Sta-Rite MasterTemp/Max-E-Therm Manifold Bypass Valve Kit (77707-0001) elbows A wet end like this

A wet end like this is useful because it restores the main pump housing and hydraulic section as a matched assembly

Helps provide flexible user control in compatible systems

stronger overall performance

1-1/2 inch by 1 inch sizing supports intended fit

It is a practical service item when the spa needs renewed temperature feedback to return to more dependable operation

Pentair Sta-Rite MasterTemp/Max-E-Therm Manifold Bypass Valve Kit (77707-0001) elbows A wet end like thisThe manifold bypass valve kit supports controlled water movement inside compatible MasterTemp and Max E Therm heater manifolds. A worn or damaged bypass can affect heater flow behavior, temperature regulation, and internal water routing. Replacing the kit is often part of resolving heater performance issues related to flow, noise, or manifold service findings. This is a critical water path component and should be installed as part of a careful heater