the development of foreign pipeline ball valve

Pipeline ball valve for half a century after the development of design in the structure of the formation of two schools. One company in the United States on behalf of Cameron, the use of all-welded structure of spherical body. Fall into this genre of BORSIG companies in Germany, Schuck Corporation, the U.S. company Larsen & Toubro, KITZ Corporation of Japan, TIX company, TUBOTA companies, as well as the Ventura Tyazhpromarmatuva Russian companies, in Figure (a) below; another Italian Grove Schools company representatives, the use of split-type tubular structure, and then on this basis to achieve the development of welded tubular body structure, figure (b) below. Fall into this genre of new PIGNONE Italy (Nuovo Pignone), PCC company, PERAR companies, BFE companies, PIBIVIESSE companies, FCT company PBV U.S. companies, the Czech Republic Czechoslovikia company.



 



(A) the United States Cameron Corporation (b) the Japanese company TIX

Figure (a) of the whole pipeline ball valve welding ball valve





(A) the United States PBV company (b) BFE Company

Figure (b) pipeline ball valve cylinder-shaped body



Cameron U.S. technical characteristics of the company's products: All welded ball valve, nylon or PTFE sealing material may be turning the valve seat, stem up and down shaft bearing, import-side sealed the exit pressure cavity to the downstream side discharge automatically. Figure (a) (a) as shown.

Cameron United States in the fifties on the completion of the whole body welding spherical structure, with its high reliability, by half a century of global commercialization of sales, still retains the characteristics of the original structural design and a well-known brands, is widely used in important long-distance pipeline, such as the Alaska oil pipeline.

Grove Italian company to double piston effect, explosion-proof rubber O-rings or PTFE sealing materials, shaft support plate supporting the ball structure, split-type valve, easy maintenance, competitive market position, is widely used in long-distance pipeline station , booster stations. After the development of cylindrical or quasi-cylindrical welded body ball valves in the long-distance pipeline is also used for emergency shut-off valve.

In some cases, the customer needs online maintenance, the use of the pipeline structure to fit the ball valve, Figure (c) below.



Figure (c) pipeline structure to fit the ball valve diagram (d) Japan valves welded spherical TIX

As a result of commercial competition, the promotion of technically merged. Cameron's products Dynaseal 370 is split structure, body welding products with sales support; Grove also introduced a quasi-spherical structure of the whole body welding line is in charge of access to the application. While other companies such as TIX, TITZ while absorbing the merits of two schools, according to the characteristics of their respective manufacturing processes, the introduction of welded ball valve, dual-piston effect, rubber seal material ball valve product line, combines the technical advantages of the genre. Figure (d) below.

 

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