Puddle Flange is a specialized sealing flange designed to prevent water ingress where pipes pass through concrete structures such as walls, slabs, tanks, or manholes. It forms a secure and watertight barrier between the pipe and surrounding concrete, ensuring long-term protection against leakage in both pressurized and non-pressurized systems.
Puddle flanges are typically installed during the concrete pouring phase, with the flange integrated into the structure. The flange creates a seal around the outer diameter of the pipe using either a welded or mechanically fitted collar, combined with rubber rings or sealant. This ensures that no water can travel along the pipe surface into the structure.
Puddle flanges are used extensively in water treatment plants, underground utility tunnels, reservoirs, sewage systems, and high-rise buildings where pipe penetrations through wet or submerged concrete areas must be protected. They are suitable for steel, stainless steel, HDPE, uPVC, and ductile iron pipes and can be custom-fabricated to match pipe OD and site requirements. click here for pipes
At Middle East Piping, we supply puddle flanges in carbon steel, stainless steel (SS304/SS316), and coated mild steel, with corrosion-resistant finishes for long service life. Our flanges are fabricated to international standards and are available with flange drillings per ASME, EN 1092, BS10, or custom. click here for valves
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