1.UPVC spherical check valve
Structural features
The valve body is equipped with a freely rolling ball (usually made of UPVC or coated with rubber).
When flowing in the forward direction, the ball is pushed open; when flowing in the reverse direction, the ball drops back and seals the valve seat.
The structure is simple and the maintenance cost is low.
Application scenario
Wastewater and transportation of media containing solid particles
Chemical waste liquid discharge pipeline
Pipeline prevention of backflow after the pump
Small lift pump system
Application Advantages
Strong anti-clogging ability
The requirement for the cleanliness of the medium is low.
Can be installed horizontally or vertically (with the medium flowing from bottom to top)
2. UPVC spherical bottom valve
Structural features
Essentially, it is a spherical check valve with a filter screen.
Installed at the end of the suction pipe (at the bottom of the pipe)
Prevent the backflow of the medium after the pump stops and maintain the water-filled state inside the pipe.
Application scenario
The suction end of the water pump
Agricultural irrigation water supply system
Water tank and reservoir water pumping system
Groundwater or circulating water intake pipeline
Application Advantages
Prevent the pump from running idle.
Built-in filter screen to prevent large particles of impurities from entering the system
Extend the service life of the water pump
3. UPVC flap check valve
Structural features
The valve flap is of a flap-type structure and opens automatically as the medium flows.
When reversing flow, the flap closes rapidly.
The flow resistance is relatively low, making it suitable for large-diameter pipelines.
Application scenario
Municipal water supply and drainage pipeline network
Industrial circulating water system
Cooling water and rainwater drainage system
Low pressure, high flow rate conditions
Application Advantages
Low pressure loss
Smooth opening and closing
Suitable for continuous operation systems
4. UPVC flap bottom valve
Structural Characteristics
Combination structure of flap check valve and filter screen
Can only be installed at the end of the suction pipe.
Mainly serves to maintain pressure and prevent backflow.
Structural features
High-flow water pump suction system
Industrial water intake project
Open channel or pool pumping system
Application Advantages
Strong capacity for traffic transmission
Stable structure, suitable for larger diameters
Maintenance is relatively simple.
