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VALVE DESCRIPTIONA ball valve is a form of quater-turn valve which uses a hollow, perforated and pivoting ball to control flow through it. It is open when the ball’s hole is in line with the flow and closed when it is pivoted 90-degrees by the vavle handle. The handle lies flat in alignment with the flow when open, and is perpendicular to it when closed,making for easy visual confirmation of the valve’s status. The shut position 1/4 turn could be in either CW or CCW direction.(S=SHUT,O=OPEN)Ball valve are durable,performing well after many cycles, and reliable, closing securely even after long periods of disuse .These qualities make them an excellent choice for shutoff and control applications,where they are often preferred to gates and globe valves, but they lack their fine control in throttling applications.QUALITY TESTINGTo make sure the quality of sealing for both factory new valve and the valve after repairing ,pressure testing would be the last pace. The method we choose to test is based on the national standard or the international standard. American standard (ANSI/ASME,AP-I),German standard (DIN),Europe standard-(EN)and International standard (ISO)would be the most common choice. Hebei JY Precision Machinery Co. Ltd is a high-tech enterprise combine designing, tooling developing, casting, machining, surface treatment, inspection, sales and service all together. Founded in 2017, located inHuanghua, Hebei, JY now covers an area of more than 5000 square meters.With a massive research & development environment, JY utilized market-leading technology and introduced various of advanced equipment to ensure the stringent quality in production.Under a powerful management team, the company has growing to the group with more than 100 employees. Product offerings range from Stainless Steel Pipe Fitting, Quick Joint, Ball Valve, Check Valve, to Marine Hardware and Auto Parts. The material are 304, 304L, 316, 316L, SF8M, WCB, 1.4408, etc.-Quality- -Creativity- -Consistency-These words are JY slogan, and also philosophy that drives the company to offer the superior service you are looking for…