What is the water line flange and what is the difference between it and the ordinary flange?
The water is divided into three kinds, one is the spiral, concentric circle and three water line line, close comparison of the helix, concentric helices to some relatively sparse. The three water line according to the needs of customers, customer requirement is 2mm wide 1mm deep
Also called thread forty-five waterline waterline is thread like.In the HG20592-97 standard PN process: flange is less than 4.0MPa with non metallic flat gaskets; using PTFE gasket and flexible graphite composite gasket, car for forty-five waterline, sealing surface named RF (A)HG20592-2009 standard: convex surface, concave / convex surface and full plane sealing surface are processed by cutting tools, naturally formed a sawtooth shaped concentric circles or spiral teeth. The fillet radius of the cutting tool should be no less than 1.5mm, and the sawtooth concentric circle or spiral alveolus depth is about 0.05mm, and the pitch is about 0.45-0.55mm.The clearance and depth of outlet flanges are generally set by customers, usually 0.3mm-1mm wide.American Standard welding flange, sliding sleeve flange width 0.5-0.7mm general requirements. Flat flange customers are mostly required wide 0.7-1mm, depth 0.5-0.8mm.
Water line flange. For the same sealing surface flange, if the sealing surface has water line, the sealing effect is better, applicable pressure higher.Water has no specific criteria, are generally custom processing, mainly divided into three types, one is the spiral, concentric circle and three water line line, close comparison of the helix, concentric helices to some relatively sparse. Conditional permission, 1~3 lane. Usually the structure is: inverted right triangle (cross section form), according to requirements, generally 2mm wide, 1mm deep.The utility model has the function that a labyrinth seal is formed when the flange is connected, and the leakage of gas or liquid is reduced. In addition, if the flange is connected with a non-metallic gasket, it is only possible to process the sealing water line; if the metal gasket is sealed, the water line is not processed.
