Flange Type Rubber Check Valve
Flange type rubber check valve’s diameter gradually reduce along flow direction, and gradually forming a duckbill shape sealing parts, so it is also called flange type rubber duckbill valve. It can prevent flood and waste water to flow backward to sewer and basement, and avoid heavy loss; it can prevent flood to flow backward to waste water plant and drainage pump station; prevent waste water or peculiar smell fluid spread and can drain away water at any time; In rainy season, rubber check valve can prevent the flood of inland river from sewer to street.
Rubber material usually is Natural rubber and Neoprene rubber. Natural rubber is fit for waste water which includes alkali and acid; Neoprene rubber can wear UV, and fit for outdoor environments.
Product adopts mould pressing or spool technology, high gas tightness, rubber part is manufactured with cord polyester cord thread, small deflection.
The flange made by Lanphan meet the international standard of DIN, ANSI,ASME, JIS,BS,EN and other standards, our flange thickness, smooth surface roughness, the accuracy of the caliber are within the tolerance of control thousand classification.
Flange type rubber check valve is full rubber structure, with features of "positive inflows reverse backstop", it is a new drainage valve product.
|Pipe size ID||Length (L)||Height (H)||Flange Outside Diameter (A)|