Black Check Valve

Home Drain takes into account not only the modern bathroom interior but also the convenience of drain cleaning and the function of blocking odors and pests.
Black Check Valve (Backflow blocking)
Horizontal drainage
Vertical drainage
45 degree drainage
Various drainage applications
Construction of building sanitary facilities, drainage and ventilation systems, positive pressure, and problem design

During the design and construction of building sanitary facilities, the positive or negative pressure generated in the drainage system and the hydraulic pump phenomenon that occurs during the improper design or construction of the drainage and ventilation system cause the phenomenon of pushing positive pressure through the water in the bathroom, toilet, or drain on the lower floor.

There are several design methods used to solve these pressure problems. Black check valves are an economical solution to the problem of positive pressure (back pressure) in drainage and ventilation systems.

Black Check Valve Features ① Black check valves are designed and installed for use in horizontal or vertical drain pipes. ② The design and construction are done using a tubular check method to reduce or block the positive pressure (back pressure) problem.
Black check valve advantages ① It opens and closes with gravity and magnetism, perfectly blocking positive and negative pressure. ② Maintenance is very easy as it has a simple inspection tool.
Black check valve (backflow prevention) for sewage and drainage. Easy design and construction.