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Three-point lead seal for safety valve

2021-10-06View Original

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Most of the safety valves in our company are spring-type safety valves. Recently, experts came to our company for an inspection and suggested the use of a three-point lead seal, at the position where the setting pressure is adjusted at the top; Sealing surface of the middle valve body, bottom positioning pin ; After communicating with our city’s safety valve inspection station, we were informed that in the entire city, only our company uses a three-point lead seal; all other companies use a two-point lead seal (with seals applied at just the top two points) ; Has anyone encountered this problem?

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