Zoeller 30-0151 — 2″ UniCheck® Cast-Iron Check Valve | Heavy-Duty Backflow Protection GTK03U while the required rough-in valve

while the required rough-in valve is sold separately

The manual-valve compatibility is stated clearly

Power Rating: 11

A small tankless heater can be a useful solution for a sink or remote fixture

Finish: Matte black

Zoeller 30-0151 — 2″ UniCheck® Cast-Iron Check Valve | Heavy-Duty Backflow Protection GTK03U while the required rough-in valveZoeller 30 0151 2 UniCheck Cast Iron Check Valve The Zoeller UniCheck 2 Cast Iron Check Valve (Model 30 0151) provides heavy duty backflow protection for sump and sewage pump systems. Its durable cast iron body and full flow internal design help reduce restriction and system noise while guarding your pump and basin from reverse flow. Key Features & Benefits Backflow prevention to protect pumps and basins from reverse drainage Cast iron construction