In the closed position, the ball is pushed against the seat by the pressure of the fluid from upstream and hence can pressure seal the downstream of the valve. The floating ball is not used in high pressure and large sizes for two reasons. This article is a design study using nx siemens cad and computer fluid dynamic analysis cfd for the complex type of naval valve, also called three way ball valves twb. Disk introduction a valve is a mechanical device that controls the flow of fluid and pressure within a. Rising stem ball valve the calvary rsbv is a trunnion mounted rising stem ball valve design, suitable to a wide range of applications. The valves should always be either fully open or closed. 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 valves status. Teks technologically advanced ball valve design is the product of an extensive research and develop. Thanks to their operat ing principle, quarterturn ball valves are able to control fluid flow at very small openings and to open at high differential pressure. The side entry bolted body version is one of the most trusted valve design in the oil and gas industry. With floating ball design, the upstream fluid pressure assists the seal by pushing the ball back against the rear or downstream seat. In fact, we have seen work done where the cylinder head seat was a radius instead of an angle to improve flow. Design and inspection standards 1 kitz product coding 1 product range 2 pressuretemperature ratings 6 design features 12 kitz hypatite ptfe ball seats 15 kitz ball seat materials 16 class 150300 carbon steel split body ball valves 17 class 150300 carbon steel unibody ball valves 18 class 6001500 carbon steel split body ball valves 19 class 150300 stainless steel split body ball.
The design is done for sealing cup, ball, connection adaptor, valve housing and operating lever. At the design stage, all projects are analysed using 3d solid modelling tools. Read, highlight, and take notes, across web, tablet, and phone. Ball valve design feature valve building engineering scribd. This valve is available in carbon steel, ductile iron and aluminum bronze. In addition to the pdf ebook of this article, ism also has a new.
The designing of high pressure ball valve components depends on pressure, temperature ratings and also other factors. And, with the rapid changes occurring in the process industries, there is a constant need for the design, development, and testing of. Appearance the floating ball valve and the trunnion ball valve are easy to distinguish in appearance. General application industrial systems including water, condensate, oil, gas and chemical processes. Using a ball valve in the partially open position can result in seat damage and, under certain conditions, damage to other valve components. Onoff ball valves engineering, manufacturing and fat. Values are raw torque values for new valves and standard seat materials. A floating ball valve has a ballshaped closure member that is not fixed to the valve stem and is allowed some freedom of movement through the valve cavitys key slot. Seat designs, stembearing system and stem seal arrangements ensure consistent minimal torque values. Locking device 514f 3way ball valve full or standard port ss316 threaded iso 5211 direct mount pad locking device size. The torque is also lower than that of trunnion mounted design. Provided with forged brass hard chrome plated ball.
Furthermore, the results of the threedimensional analysis can be used in the design of butterfly valve in the industry. In case there is fire,the electric floating ball valve is still reliable for use due to the fireproof structure of the valve. Bfe floating ball valve design is developed using the latest software based analysis tools. Applying excessive torque in an attempt to turn a ball beyond its 90 degree stop point could damage the valve stops and. You can learn the design requirements in the standards such as asme b16. Gate valves or ball valves are two typical valves used in the manifolds. Ian sutton, in plant design and operations second edition, 2017. Floating ball valves microfinish floating ball valves are available in both reduced bore and full bore designs. Rhea, in pipe drafting and design third edition, 2012. The present study involves the design of high pressure ball valve to the requirements. The floating ball valve has simple structure, good sealing performance but the seat material is required to withstand the workload since the sealing pressure is bared by the seat ring. Designing of various components of the high pressure ball valve. Cast steel ball valve, twopiece body design, blowoutproof stem, antistatic device, firesafe to api 607api 6fa designed to api 6d working pressure. Floating ball valve china valve manufacturer metals valve.
Design and inspection standards of kitz flanged ball valves. The trunnion mounted ball with its floating seat rings allows easy. Ball valve design feature free download as pdf file. Fbv floating ball valves are manufactured according to api 6d or api 608 design and fire tested per api 6fa and api 607 standard. Customer should determine appropriate service factors. Click below chart to view the technical drawings, dimensions and weight details for split body floating ball valve, class 150 class 2500 in both full port and. The double piston effect seat design in the api 6d is also called the doubleisolationandbleed valve dib valve. Design code selection definition of service classes antiblow out design of stems basic calculation rule for stem antistatic construction, stem to ball and stem to body seals category and material selection for ed or specific service. Hydac ball valves are developed and constructed in response to problems. The design calculation is done for sealing cup, ball, connection adaptor, valve housing and operating lever. Combination of spe and dpe a trunnion mounted ball valve with the upstream seat unidirectional and the downstream seat bidirectional blocks the fluid at the downstream seat in both directions, while it blocks the fluid on the. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur.
Due to a very large flow passage dafram control ball valves can grant high flow coefficients compared to other valve types. A ball valve is designed to be used in the fully open or fully closed position. Product range flanged floating ball valves shell material class kitz product code bore 1 nominal design size body nps 12 34 1114 112 2212 345681012 page dn 15 20 25 32 40 50 65 80 100 125 150 200 250 300 carbon steel class 150150sctdz f split 14 class 150g150sctdz f split 14 class 150150sctazm r uni 26. Industrial threaded ball valves carbon and stainless steel. It is open when the balls hole is in line with the flow and closed when it is pivoted 90degrees by the valve handle. The objectives of the project are listed as follows, 1. Tek valves incorporate premium components, are manufactured to in. Two piece or three piece construction ball valves meet the following standards. Threeway ball valve flow patterns ebook and chart from ism. Generally, floating ball valves are used for lower pressure ratings and smaller sizes. A ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it. F ball valve f leading valves design and manufacturer. Ball valve learn about floating and trunnion mounted ball valves at hardhat engineer.
You can get some good design information from the valve designers handbook or the valve book. Weather seal prevents external attack by corrosion and foreign abrasives. As a result of this program we produce valves of the highest quality and performance. Bfe floating ball valves are available with preassembled valvepneumatic actuator packages.
The high pressure ball valve will be designed for a working pressure of 350bars and a temperature range of 0 to 500c. Ktm series eb588 floating ball valve vctds03217en 1802 3 piece, reduced bore, floating ball valve, suitable for a wide range of arduous applications for the oil and gas, petrochemical and process industries, where firesafe design is mandatory. Valve specification requirements main actions on design, main features of international application. T floating ball 3t 3pc 4 port design k reduced h regular f full 5 mounting pad z integral iso5211 on 3pc 6 trim ball and stem m 316ss 7 options fs fire tested per api 607 8 operator locking lever. Course description valves have been called the work horses or muscles of any automatic control system. Features your pipeline to quality for tank level control will not corrode. The cfd analyses performed for both ball valve and gate valve is necessitated with input parameters that outfits the application such as pressure, density, viscosity and temperature. Three piece ball valves is also offered with nonfire safe design. Ball valves for onoff and those that are used in control. Ball valves are designed using the latest cad software to achieve the highest level of. Bolted body design aops series fb ball valve is a rugged twopiece bolted design. Obviously that gives a line contact between the valve and its seat, and it works but it also restricts heat flow out of the valve head.
A ball valve is a form of quarterturn valve which uses a hollow, perforated and pivoting ball to. Fbv floating ball valves are offered in 2 pc side entry, 3 pc side entry or welded body design in a wide range of carbon and stainless steel materials. The mechanical or cam movement of the ball provides a friction free operation, eliminating wear between the sealing surfaces and extending the valve life. In any case bfe standard design allows users to direct mount most brands of valve actuators with the need of an additional bracket always available in the factory. Key words butterfly valve, numerical simulation, flow coefficient, hydrodynamic torque coefficient 1. Dear sir we need valve design manually operated patterns book please. Ball valves ball valves, as the name implies, have a ball with a hole drilled through the centre swivel mounted within the valve body. Stronger stem, meaning a higher mast value, with no impact on break torques. Rugged locking device and firesafe design are standard. Viza floating ball valves fire safe is designed in accordance with.
Due to unavailability of high performance seat material, floating ball valve is mainly used in middle or low pressure application. Pdf design and analysis of industrial ball valve using. Service life standard model availability flexibility hydacs ball valve design department is equipped with the most modern computer assisted systems cad, which also make it possible to quickly and costeffectively. Bfe floating ball valves are available with preassembled valve pneumatic actuator packages.
The valve may be mounted through a hole in the tank wall and anchored with the lock nut provided. Crvs special design of auxiliary metal to metal or the graphite seal is designed for the trunnion ball valve to effectively prevent both internal and external leakage of the valve in case of fire as required by customers, crvs fire safe design for the trunnion ball valve. The pressure and temperature involves in the designing are 525 bar and 60 0c respectively. Balon floating ball valve torques inch pounds balon floating ball valve actuator torque data note. When the hole in the ball is orientated in the same direction as the pipe, this will result in full flowrate. To avoid the accumulation of the static,this range of pneumatic is provided with antistatic structure,the spring plunger type static extraction device forms the static access between the ball and the stem and valve. Ball valve is the most used fluid shutoff valve in upstream oil and gas production facilities, both onshore. Our printed literature and price books are available to you free of charge, but we do ask. Pdf published april 28, 2009 ball float valves the chemline bf series ball float valve is a cost effective level control device for water or nonhazardous liquids.
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