H42X flange bottom valve

The bottom valve, also known as a check valve, is a type of low-pressure flat valve. Its function is to ensure that liquid flows in one direction in the suction pipeline, allowing the pump to operate normally. When the pump temporarily stops working, it prevents the liquid from returning to the water source tank, ensuring that the suction pipe is filled with liquid to facilitate the pump’s startup.

▌Structural Characteristics and Uses

The bottom valve, also known as a check valve, is a type of low-pressure flat valve. Its function is to ensure that liquid flows unidirectionally in the suction pipeline, allowing the pump to operate normally. When the pump temporarily stops working, it prevents the liquid from returning to the water source tank, ensuring that the suction pipe is filled with liquid to facilitate the pump’s startup.

The bottom valve is an energy-saving valve, generally installed at the bottom end of the submerged suction pipe of the pump, restricting the return of liquid in the pump pipe to the water source, functioning as a one-way valve. The valve cover has multiple water inlets and reinforcing ribs, making it less prone to clogging, and is mainly used in water extraction pipelines. It serves the functions of a waterway and support. The diameters come in single-disc, double-disc, and multi-disc types, with flange and threaded connections. Other names include: internal threaded lift bottom valve – well bottom valve, suction valve, filter valve, showerhead; lift bottom valve – flange well bottom valve; rotary lift bottom valve – flange rotary lift well bottom valve.