RUBBER FLAP CHECK VALVE

PRODUCT DESCRIPTION

The Rubber Flap Check Valve is designed for automatic prevention of reverse flow in water and wastewater pipeline systems. Forward-moving fluid pushes the resilient flap away from the seating surface, allowing the medium to pass through the valve. When forward flow decreases or stops, the flap automatically returns to its closed position to restrict reverse flow.

The inclined seating arrangement is designed to shorten the disc travel required for closure. This allows the flap to respond quickly to changing flow conditions and can help reduce hydraulic shock associated with sudden flow reversal.

Its relatively simple internal construction, resilient sealing system and robust ductile iron body make the valve particularly suitable for municipal water, sewage, pumping and general utility applications.

KEY FEATURES & ADVANTAGES

1. Quick Closing Action
   The inclined seat geometry reduces the distance required for the flap to reach its closed position, providing a faster response when flow stops or reverses.
2. Reduced Water-Hammer Potential
   Faster flap closure can help limit reverse-flow velocity and reduce pressure surges within the pipeline.
3. Resilient Rubber Sealing
   NBR or EPDM sealing surfaces provide flexible contact with the seat and dependable shut-off performance.
4. Reinforced Flap Construction
   The valve flap incorporates a metallic reinforcing structure combined with resilient rubber to provide both mechanical strength and sealing flexibility.
5. Resistance to Flow-Induced Wear
   The rubber-covered flap helps protect the internal sealing component against erosion and repeated impact during normal operating cycles.
6. Automatic Backflow Protection
   Operation is entirely flow-actuated, eliminating the need for external power, actuators or manual intervention.
7. Simple Internal Design
   A reduced number of moving components contributes to straightforward operation and minimizes routine maintenance requirements.
8. Convenient Maintenance
   The accessible construction simplifies inspection, servicing and replacement of internal components when required.
9. Robust Ductile Iron Body
   QT450 ductile iron provides good mechanical strength and impact resistance for water and wastewater pipeline installations.
10. Suitable for Utility Services
    Particularly suited to pumping stations, municipal water networks, wastewater treatment facilities, sewage systems and other general fluid-handling applications.

TYPICAL APPLICATIONS

Water Supply Networks • Wastewater Treatment • Sewage Pipelines • Pumping Stations • Municipal Infrastructure • Irrigation Systems • Industrial Water Systems • Utility Pipelines • General Backflow Prevention

DIMENSIONAL DATA

Technical Note: Dimensions, pressure limits, rubber grades and material configurations should be verified against the final approved manufacturing datasheet before project selection or installation.