Variable Flow Check Valve – Adjustable Flow Rate for Water Well Systems badge 817 and D919

817 and D919

-May require manual reset after activation

-Dual tapping design – 1/8" NPT tapping on the inlet and 1/4" NPT tapping on the outlet

and Illinois code requirements

Variable Flow Check Valve – Adjustable Flow Rate for Water Well Systems badge 817 and D919The Variable Flow Check Valve from Merrill allows for variable control of water flow in your well system. Engineered for flexibility, this valve features an adjustable design that greatly reduces pressure loss, prevents water hammer, and improves pump system efficiency. Ideal for submersible pump installations or any application where consistent variable flow and backflow prevention are critical. Key Features: Adjustable internal design for variable