Cast Iron Flap Valve:

Simple & Reliable Backflow Prevention

Overview:

Our Flap Valve (also called as: flap gate, tide gate, hinged crest gate, backwater valves, check valves or non-return valves) is an essential,automatic check valve designed to protect your water and wastewater systems. It efficiently prevents backflow, ensuring smooth operations and protecting critical equipment like pumps. Best of all, it works automatically—no power or manual intervention required.

Key Features:

· Automatic Operation: Opens with forward flow and seals instantly when flow stops or reverses.

· Durable Build: Constructed in corrosion-resistant materials like stainless steel or epoxy-coated ductile iron.

· Tight Seal: Features a robust rubber gasket to prevent leakage and backflow.

· Low Maintenance: Simple design with no complex parts—reliable under tough conditions.

· Easy Installation: Standard flange design compatible with common piping systems.

Applications: Ideal for use in:

· Wastewater treatment plants

· Stormwater and flood management systems

· Industrial discharge pipelines

· Irrigation and drainage systems

· Marine and coastal outfalls

Specifications Available:

· Sizes: DN 300 – DN 2200

· Pressure Ratings: PN10/16

· Material Options: Ductile iron, stainless steel, structure steel or OEM configurations

· Surface Treatment: Hot-dip galvanized, Hot spray zinc, epoxy coating, or anti-fouling protection

Get in Touch:

Looking for a dependable backflow solution?Contact us today for pricing and technical support. We offer customized valves to meet your project needs.

Round flap valves parameters:

Square flap valves parameters: