overview
Foot valve or Bottom valve is actually a type of check valve that prevents water from flowing back. Bottom valves can be divided into plastic bottom valves and metal bottom valves according to their materials, as well as ordinary bottom valves and bottom valves with backwash water flow. Bottom valves are mainly used in mechanical equipment such as water pumps for processing slurry. Usually, bottom valves are installed at the bottom of the underwater suction pipe of the water pump to prevent slurry backflow

structure
The bottom valve is equipped with multiple water inlet ports on the valve cover and a screen to reduce the inflow of debris and lower the probability of blockage of the bottom valve. Although bottom valves are equipped with anti clogging screens, they are generally suitable for cleaning media. Bottom valves should not be used for media with excessive viscosity and particles.

characteristic
Bottom valve is an energy-saving valve that is usually installed at the bottom of the underwater suction pipe of a water pump to restrict the return of liquid in the pump pipe to the water source, playing a function of only entering and not exiting. There are many water inlet ports and reinforcement ribs on the valve cover, which play a role in preventing blockage and are mainly used in pumping pipelines. The role of waterways and supports The caliber includes single petal, double petal, and multi petal types, with flange connections and threaded connections. Other names: Internal thread lifting bottom valve - bottomhole valve, suction valve, filter valve, showerhead; Lift type bottom valve - flange bottom valve; Swing bottom valve - flange swing bottom valve.

Performance specifications
Lift performance specification: nominal pressure: PN0.25MPa nominal diameter: DN15~DN350 Applicable media: water, oil, and non corrosive media Execution standard: Q/12 NJ3583-2001 Test standard: GB/T 13927-2008