Accessibility Tools

Product Description

Vaycom Engineering RFL Round flap gate model is a solution specifically designed for sewer lines in a variety of applications, including dams, sewage lines and wastewater disposal lines

This model stands out for its ability to hold the clapper closed to prevent back flow of water, opening automatically when the back flow load exceeds the forward flow load.

They come in a wide range of sizes, varying from Ø150mm to Ø1200mm and provide a high level of watertightness

Vaycom offers the possibility to design and manufacture larger models according to the specific needs of each customer.

General Applications

The RFL round flap gate model is ideal for use in drainage lines, weirs, sewage lines and water drainage ducts.

Its simple operation keeps the clapper closed to prevent backflow and opens automatically when the backflow load is greater than the forward flow load.

Standard Design

  • Designed according to DIN19569-4 Class 5.
  • Can be bolted to a flange or mounted on a wall.
  • Flange connection options according to different standards: PN2,5, PN10, PN6, PN16, ANSI 150, among others.


  • Mechanically welded construction in S275JR, AISI304L or AISI316L. Other material on request.

Sizes and Pressure

  • Available in sizes from DN150/6″ to DN1200/24″.
  • Pressure rating up to 5 bar in sizes DN150-DN1200. Other pressures on request.

Seat and Accessories

  • EPDM seals ensure a high degree of leak tightness.
  • Additional accessories and components such as hydraulic actuators are available for applications requiring quick opening, e.g. storm tanks.

For further information and details on customization and ordering, it is recommended to consult directly with Vaycom.