Ball Valve

Product Design Features
Serial floating ball valve are mainly applied to natural gas, oil produces ,chemical engineering, metallurgy, city building, environment protection, pharmacy and food industries, among which the anti-sulphur series are used for long delivery pipes of natural gas that contains hydrogen sulphide medium, a lot of impurity and corrosive substance.
The design features of the floating ball valves include:
Double cant elastic seat ring or V-shaped groove seal ring structural design is adopted to ensure sealing reliability. As for low-pressure, ultralow pressure or vacuum-operated ball valve, a plate spring-loaded sealing structure of valve base is adopted to ensure their longterm sealing reliability. As for moderate or high temperature ball valve, Para-position polyphenylene or mental can be adopted for valve base material.
Automatic pressure relief structure
When the pressure in cloaca cavity increase singularly, the cavity medium can push valve base by its own thrusting force, which result in automatic pressure relief and valve security assurance.
Reliable Sealing of Valve Rod
The valve rod adopted downward installation structure with back sealing. The sealing force will increase together with the heightening of medium pressure, which can ensure the sealing reliability. Moreover, even if the pressure in valve cavity increases singularly, the valve rod will not burst out.
Fire-resistant Structure
According to the operating condition and users requirement, ball valve can be designed with a fire resistant structure up to the fire-resistant standards of API607 and JB/T6899. Once the soft seal ring is burnt out on fire, the structure can avoid serious leaking of the medium and prevent the
fire from scaling up.
Anti-static Structure
While operating the valve, the friction between the sphere and the base will produce static charges accumulating on the sphere. To avoid static sparkle, the fire-resistant device is designed to derive the accumulated static sparkle, charges from the sphere.
Locking Device
A locking structure is designed on the full-open and full-close spots of manual ball valve to avoid abnormal open-and-close produced by misoperation or unpredictable circuit vibration. On production lines of petroleum and chemicals of flammable mediums, and during the course of outdoor piping , the design is especially advantageous and practical.
Full Bore Structure and Reduced Bore Structure
The two structure series are produced to meet different requirement of users. The passage inside diameter of full diameter ball valves is the same as that of valve pipe, which is convenient for pipe cleaning. The weight of retractive diameter ball valve is relatively lighter ,but the fluid resistance is just 1/7 that of stop valves with the same caliber. Therefore, the application prospects of retractive diameter series is much better.

Founded in 1994, Haqun Valve Group Co., Ltd is a manufacturer of industrial valves. We supply a broad range of product lines to various industries like chemical, petrochemical, oil refinery, gas, power plant, water supply and metallurgy etc. Our group is the member of the following organizations: China General Machinery Valve Association. China Petrochemical Materials & Recourse Market. The Class Supply Network of China Petroleum Corporation.Our products include gate valve, ball valve, check valve, globe valve, butterfly valve, plug valve, diaphragm valve etc. In accordance with API, ANSI, BS, DIN, JIS, GB, JB our group has obtained the certifications of ISO9001:2000, API 6D, CE, ISO14001 and OHSAS 18001.The materials for our products are available in WCB, CF8, CF 8M, CF3, CF 3M, WC1, WC6, WC9 etc. The highest working pressure reaches up to 2500Lb or 42MPa. The working temperature ranges from -196? to 1350??Because of the excellent product quality and customer services we?ve attracted more and more customers from China domestic and aboard. Based on the principle of equality and mutual benefit, we look forward to serve our existing as well as new customers worldwide.