Top Flap Valve Manufacturers

1.Althon(UK)

Core Products:HDPE,cast iron,stainless steel flap valves(wall/flange/push-fit mounted).

Key Features:50-year design life;bespoke for square/rectangular/elliptical openings;EPDM seals.

2.Flomatic Valves(USA)

Core Products:Water/wastewater industry flap valves,check valves.

Key Features:Founded 1933;high-end testing;global project experience.

3.MIDAS(China)

Core Products:Ductile iron,stainless steel flap valves(DN50–DN3000).

Key Features:10°inclination for tight sealing;competitive pricing;custom R&D.

4.Fernco(Germany)

Core Products:HDPE flap valves(FV/FVS series).

Key Features:Lightweight,corrosion-resistant;wall/spigot/flange mounted;EPDM lip seal.

5.BÜSCH Technology GmbH(Germany)

Core Products:Stainless steel/steel flap valves(DN100–DN2000).

Key Features:Flood protection;replaceable EPDM/NBR seals;leakage to DIN 195.

6.TH-Valve Nantong(China)

Core Products:Flapper check valves,swing check valves(carbon/stainless steel).

Key Features:High-pressure resistance;compact design;ISO/API certifications.

7.Gongyi Runda Pipeline(China)

Core Products:Wafer-type single-flap check valves(DN50–DN300,304/316 SS).

Key Features:Ultra-thin;metal hard seal;low cost for water/oil/gas.

Key Selection Criteria

Material:Stainless steel(corrosive),ductile iron(heavy-duty),HDPE(low-cost,non-corrosive).

Size:DN50–DN3000(circular)or custom rectangular.

Pressure:2–10 mwc(water column)standard.

Certifications:ISO 9001,CE,DIN 195,API 6D.