high quality butterfly valve flange

First of all, let's talk about how the Butterfly Valve Flange should be kept and stored before use. Storage of flanged butterfly valves: The flanged butterfly valves before installation and use should be stored in a dry warehouse, and the blocking covers at both ends of the channel should not be removed at will; butterfly valves that have been stored for a long time should be cleaned, dried and coated with anti-rust oil regularly , and then both ends are sealed with the original plug caps to ensure that the inner cavity is clean and the sealing surface is protected. After talking about storage, let's take a look at the use and maintenance of flanged butterfly valves.       Material     Carbon steel ASTM A105, A350 LF1, LF2, LF3, LF6, CL1/CL2,; A694 F52, F60, F65, F70; A516 Gr. 60, 7…