Waterway 2.0 HP SVL56E-120 Pump Impeller (310-3670) jettrim When an output-level relay board

When an output-level relay board begins to fail

When recurring control issues begin to affect heating

Matching the correct cast iron return header helps preserve intended fit and supports a more dependable heater rebuild

When a check valve becomes worn or inconsistent

Waterway 2.0 HP SVL56E-120 Pump Impeller (310-3670) jettrim When an output-level relay boardThe Waterway 310 3670 impeller is designed for compatible 2. 0 HP SVL56E 120 pump applications. A part like this is useful because it restores the rotating water moving component inside the pump, helping bring the assembly back to its intended function when the original impeller has worn out or failed. Matching the correct SVL56E series part helps preserve both fit and expected performance. This Waterway impeller is especially practical when the