Take the door

PM counterweight beat door product overview

The pat door (check valve), and more for water supply and drainage and sewage treatment works of various pipes and water channels. Used to overflow or check media. Can also be used as a variety of shaft covers. 
 
PM-type counterweight beat the door features the door by the body, cover and hinge components. Its opening and closing force from the water pressure, does not require manual operation. The pressure inside the pat door is greater than the pressure outside the pat door, then open; otherwise closed, in order to achieve the role of overflow and check.

PM-type counterweight beat the door main product performance parameters

PM-type counter-weight filming the main components of the material products

Product structure characteristics

      The pat door by the body, cover and hinge components. Its opening and closing force to water pressure, does not require manual operation. The pressure inside the pat door is greater than the pressure outside the pat door, then open: otherwise closed, in order to achieve the role of overflow and check.

PM-type counterweight door main shape connection size