Some bonnets function simply as valve covers, while others support valve internals and. The design ensures the fire safe requirements in accordance with the international standards as api. Onepiece ball valves have a solid, cast body which reduces the risk for leakage. Plus, their compact, spherical design also eliminates body flanges, thus reducing overall size and leak paths. Split body design with flanged ends for fast installation, inline maintenance and rebuilding. Built for high demand applications in the food and beverage, chemicalpetro chemical, processing, power and utilities, pulp paper markets, etc. In such a way the pressure loads are transferred to the valve body granting a smooth rotation of the ball with low torque levels and reduced seat seal wear. Floating ball valves are attached only to the stem, not held in place by a. Kitz steel ball valves floating ball design design and inspection standards. They are manufactured in a wide range of sizes and pressure classes typically from forgings. Book depository books with free delivery worldwide.
A full port ball valve has an oversized ball so that the hole in the ball is the same size as the pipeline resulting in lower friction loss. A wide variety of split body ball valve options are available to you, such as high pressure. Seat replacement series 90 split body flanged ball valve. Body join is designed to prevent excessive compression of valve internals, resulting in consistent and low operating torque. Its superfinefinished, trunnionmounted ball design is just one of its many important design features. The fk76c splitbody, fullbore, trunnionmounted ball valve represents the highest standards in valve technology. The actual design of a valve may be slightly different from this illustration, depending on its size and pressure class. The highquality investment cast valves feature a fully machined bore. Split wafer design valve 899892 series dynaquip 890892 series butterfly valves are designed for specialized or severe service.
As you may have guessed, a 3 piece ball valve consists of three pieces, two end caps and a body. The torque required to actuate a trunnionmounted ball valve is substantially smaller than the torque required for a floating ball design. Bvf2 class 600 2piece split body full port flanged ball valves are asme b16. Valves doehdbk1018293 valve functions and basic parts valve bonnet the cover for the opening in the valve body is the bonnet. The superior liveloaded packing system is accomplished with belleville washers, v ring packing and a unique primary pyramidal stem seal. In the single piece design valve, the body will be castforged as one piece.
In this design, a valve body is divided into two or three body parts. The flow direction of ball valves can be either bidirectional or unidirectional depending on its seat design and working conditions. Split body ball valves ansi 150fg2 split body ball valve ansi 300fh2 split body ball valves ansi 600fm2 split body ball valve pn 1040fn2 split body ball valves pn 10160adler spa company. Api 598, iso 5208, and p api 6d upor request floating ball. The design ensures the fire safe requirements in accordance with the international standards as api 6fa, api 607, bs 6755 p 2 and iso 10497. The split ball valve is designed to be separated into two halves i. Among them are an antiblow out stem, longlife, doublestem seal system. In two piece design, the body is constructed in two pieces and the ball is held in position by body. Split body, side entry, full bore design this is an illustrated crosssection of a typical kitz high performance ball valve to exhibit the basic design concept. Cameron t30 series fully welded ball valves are trunnion mounted. As the ball is rotated, in the fully open position the valve provides the through conduit or full bore required for unrestricted flow of the fluid and scrapers or pigs. It finds wide use in fluid media while offering higher cycle life and reduced torque. Fire safe in design, minimizing leakage in the event of fire. Company overview kunshan viza is specialized in manufacturing forged steel and cast steel trunnion mounted and floating type ball valves, size from 12 to 40, class from 150lbs to 2500lbs, with body materials as a105n, lf2.
Full port, split body with kitz actuator mounting pad a regular port, uni body with iso capi actuator mouting pad trim material for carbon steel valves no symbol for 304 ss trim. As the name suggests, the two piece ball valve consists of two pieces, one piece that has one end connection and the body. Refer below image for split body three pieces type valve. Asme 150300 dimensions mm o b o d l n t o n wt kg dn nps 150 300 150 300 150 300 150 300 150 300 150 300 o c o d1 f 150 300. In some designs, the body itself is split into two sections that bolt together. The ball valve design includes an electric conductive connection between the internal parts of the ball valve and the body, providing the antistatic function. Automatic cavity relief to prevent overpressure in body cavity selfrelieving seats sealing. Solid ball construction provides structural integrity and minimizes flow turbulence. Inspection and testing every valve is subjected on routine base to different nondestructive testing, like the dye. A ball, seat rings, stem, and other internals set inside the larger body part and held together with smaller parts by bolting. Medium and high pressures all velan ball valves can be equipped with electric. Ball valve learn about floating and trunnion mounted. Ball valves types, construction, applications and advantages. Seat replacement series 90 split body flanged ball valve atcontrols.
Split body 23 pieces or 1 piece sideentry full and reduced bore. Included, the ball valve design includes an electric conductive connection between the internal parts of the ball valve and the body, providing the antistatic function. Entry ball valves represent the basic design standard. Ktm series eb om2 split body floating ball valves standard primary containment seals for fugitive emission control fire tested option dieformed carbon fiber seals, sandwiched by braided graphite rings. For a split body, two pieces valve, refer floating ball valve image. This engineering design easily adapts to meet application requirements. Furthermore this design makes the valves easy to clean and maintain. Ball valves are generally not used for throttling service in their standard design because throttling could cause the partially exposed seat to erode. The end caps are welded, threaded, or flanged to connect to the pipe on either side. In addition, these fully welded, trunnionmounted, flanged and welded end ball valves offer design flexibility with an adjustable valve stem and available double piston effect dpe down to 4 inches. In natural gas pipelines, specially used as line valve and at pig stations, compressor and measuring stations and at rsm pressure reducing a. These ball valves deliver maximum strength and resistance to pipeline pressure and stress. Floating ball bubble tightness with valve on closed position.
For processes that put heavy demands on valves, having a 3 piece valve is more convenient than one or two piece ball valves. At controls valves, actuators and valve control products. Split body type ball valves are cutoff devices suitable for use both on natural gas distribution networks and for liquid service when high performance on tightness and low pressure drop are required. Ball valves of this design are well suited for extremely abrasive and corrosive fluids. Bs split body design model ball valve solution ensures a perfect performance at primary and secondary sealing due to an accurate design. For metalseated ball valves, see special catalog velms. Learn how to replace the seats on an at controls split body, flanged ball valve, series 90. This design restricts the valve to be of regular port only. Conventional floating and trunnion mounted ball valves are usually bidirectional while some specific ball valves such as c ball valve, v port ball valve, orbit ball valve and cryogenic ball valve are unidirectional. Ball valves are vastly easier to automate than multiturn and rising stem valves partly because operation of the ball valve is a simple 90degree turn.
The trunnionmounted ball valve design is used with split body large size valves, whereas the floating ball design is the most common design for all other types of ball valves. You can also choose from manual split body ball valve, as well as from stainless steel, brass split body ball valve there are 123 suppliers who sells split body ball valve on, mainly located in asia. With a minimal number of welds, wb series ball valves are the perfect solution for underground applications. Twopiece ball valves are some of the most common ball valves used. Velan is a world leader in the design and production of a wide range of cast and forged steel gate, globe, check, ball, tripleoffset butterfly, knife gate, highly engineered severe service valves, and steam traps offering superior performance across all major industrial applications. Bohmer ball valves with twopiece or threepiece bodies are designed for easy maintenance thanks to their continually improved design. The insertion of the ball will be through the end of the body and is held in position by body insert. A ball valve consists of a valve body in which a large sphere with a central hole equal to the inside diameter of the pipe is mounted. The difference is based on how the pieces of the valve especially the casing that contains the ball itselfare manufactured and assembled. Split body ball valves are made from forged steel with flanged connections. Bs split body design model ball valve solution ensures a perfect performance at primary and secondary sealing due to an accurate design concept at any size. Bvf2 splitbody flanged ball valve class 600 keckley. Ball valves in cast 316 ss 2way, split body construction.
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