Complete introduction selection sizing of control valves, gate valve, butterfly valve,safety an d relief valves for power plant operators and oil and gas process industry. Floating ball valves are more than just floating ball valves part 1. Joywayus 34 inch thread float ball valve floating ballcock ballcock fittings automatic water level control switch. A ball valve having a nontrunnion mounted ball, the ball is free to float between the seat rings. Seawater would adversely affect the operation of the valve and also contaminate the process fluid. The floating design utilizes natural line pressure to press and seal the ball against the downstream seat. All wetted component materials and bolting meet nace mr. Floating pool lights inflatable waterproof ip68 solar glow globe,14 outdoor pool ball lamp 4 color changing led night light, party decor for swimming pool,beach,garden,backyard,lawn,pathway 2 pcs. 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. Ball valves are designed using the latest cad software to achieve the highest level of. You can learn the design requirements in the standards such as asme b16. Rays steel ball valves are designed manufactured to provide maximum service life and dependability. They do make the simple ballfloat shutoff valves but they are much too large for my application. Floating ball valve table of index page introduction, features 34 overview, split body 5 dimensions and weights, class 150 pn 20 6.
Ta1c3 class 300 full bore ball valve designed to api 6d cast steel ball valve, twopiece body design, double block and bleed, blowoutproof stem, antistatic device, spring loaded seats, firesafe to api 607api 6fa cast steel ball valve, twopiece body design. Ball valves for onoff and those that are used in control. You can get some good design information from the valve designers handbook or the valve book. Floating ball valves are identical to conventional ball valves in design and function with one major exception. The torque is also lower than that of trunnion mounted design. Nonremovable antistatic devices assure electric continuity between ball and body through the stem. Floating ball valves are more than just floating ball. As the area on which the pressure acts is much lower. Floating ball valves are usually considered to be a simple type of valve and are not, in fact, particularly appreciated. As you can see, only for the dn50 nps 2 size, you have the choice whether you want to have a floating or a trunnion ball. Floating ball design for superior bidirectional shut off across a wide range of pressures. The current flows through this passageway until the ball rotates, making a.
Bolted body design aops series fb ball valve is a rugged twopiece bolted design. Body of floating ball valve may be integral or combined type. Bfe floating ball valve design is developed using the latest software based analysis tools. Floating ball valves are more than just floating ball valves. The valves are of floating ball design where the ball moves towards the downstream seat, under pressure, to effect a. In my opinion you should decide for a trunnion starting with class 600.
Body construction can be two or three pieces, bolted. A ball valve is a form of quarterturn valve which uses a hollow, perforated and pivoting ball to control flow through it. That part of a ball valve which holds the ball on a fixed vertical axis and about which the ball turns. New model trunnion mounted ball valve fire safe design 1. They can either be selfrelief seats, as illustrated in fig. The structure design of elestic sealing ring has been adopted for floating ball valves.
Industrial valves books handbooks and training materials related to industrial valves design operation and maintenance. The torque requirement of a trunnion mounted ball valve is significantly less than that for a floating ball design. Llever, ggear 3 worm gear operation is standardised for the sizes marked with the prefix g on each kitz product code. Valve design allows for high flow capacity in liquid or gas services regardless of whether. There are two main types of ball valves, the floating and trunnion style. This seat design features a bigger sealing pressure ratio between the ring surface and the ball when medium pressure gets lower, where the contacting area is smaller. Appearance the floating ball valve and the trunnion ball valve are easy to distinguish in appearance. Ball valve learn about floating and trunnion mounted. A ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it. We have the valve to help lower your costs and achieve maximum process uptime bringing together some of the preeminent floating ball valve brands, our extensive range of full and reduced bore valves allows you to meet your unique process conditions and helps you. Api 6a valves floating ball valves trunnion mounted ball valves. Floating type ball valves conform to iso5211, flanged ends 1. Series fb floating ball valve table of contents series fb floating ball valve.
Some designs include facilities for longer boxes to house dual packing sets. We have also incorporated features required by specific end users such as petrobras, aramco, bp and pemex including iso 158481,2 emissions testing. An advantage of trunnion ball design over floating ball is the lower operating torque of the ball. Ball valves are classified as either floating ball or trunnionmounted types. Achieve sealing by the action of the pressure, wich pushes the ball against a seat ring. This is particularly advantageous when the ball valve is actuated because it reduce the size of the actuator and hence the overall costs of the valve actuation package. A short shaft like an extension that called trunnion set in the body.
Fbv floating ball valves are manufactured according to api 6d or api 608 design and fire tested per api 6fa and api 607 standard. Kitz steel ball valves, floating ball design 3 product range 1 bore design. Scv valve api 6d trunnion mounted ball valves in sizes 3 thru 20 in. Full and reduced bore, soft and metal seated designs available. Floating ball valve configurations to optimize your process. The ball valve is an inexpensive alternative to other valves. They are characterized by simple design, easy maintenance, low cost and quick delivery. Ball valves use a metal ball with a hole bored through the center, sandwiched between two seats to control flow. Ball valve design feature valve building engineering scribd. Both floating ball and trunnion designs are available as multiport valves by using elaborate flow paths in the ball and additional ports in the body. Compact designs are significantly smaller and lighter when compared to the.
Book depository books with free delivery worldwide. At the design stage, all projects are analysed using 3d solid modeling tools. Figure 197 shows a typical twoway subsea ball valve from autoclave engineers that is designed to facilitate operation by an rov. Floating ball valve on sales quality floating ball valve. Trunion mounted ball valves are uses a spring mechanism andor line pressure assistance to drive the upstream seat against the stationary ball. Floating ball valves typical application is for smaller sizes up to 6 inches and lower pressure classes. Fullbore and regularbore designs, variety of end connections and materials to suit customer requirements. Double piston seats present a difficult design manufacturing problem at high pressure. Instead, the line pressure forces the upstream seat onto the ball to cause it to seal. Due to unavailability of high performance seat material, floating ball valve is mainly used in middle or low pressure application. When the upstream ball valve seat fails then the upstream pressure will fill up the body cavity and energize the downstream ball valve seat. The gasification process converts coal to gas using a combination of oxygen and superheated steam.
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. Ball valves are intended to be used as onoff flow control devices and are not to be used to throttle fluid flow. Designs for the valves are created by an experienced team of valve experts who have a. The valve design incorporates additional oring seals, which prevent the ingress of seawater into the valve. The valves should always be either fully open or closed. A available in casting and forging b available in casting only. In this design steam and ball work as a single unit.
Trunnion mounted valve is a solution to the problem of excessive torque required by a floating type valve in highpressure service. It is open when the balls hole is in line with the flow and closed when it is pivoted 90degrees by the valve handle. Design feature s for floating ball valve model 45 00. One piece ste m designed with integral ttype shoulder to provide blow out proof effectively. These valves are quick opening and provide a very tight closure on. Types of ball valves floating, trunnion projectmaterials. The key difference beteween a floating ball valve and a trunnion mounted ball valve is how each achieves a line seal. The key feature is that the ball does not shift as it does in a floating valve to press the ball into the downstream seat. Of these metal seated ball valves supplied, some are floating design, while the rest are trunnionmounted with extension bonnets for low to high temperature service. Floating ball valve rptfe 316 body ball ss316 300lb rf flange stem ss316 design features the ball valve is designed in accordance with iso17292,api 608,bs 5351,gbt 12237. Many of the early commercial ball valve designs, as well as some used today, depend on the jam seat design. Our floating ball design complies with ansi, asme and api standards. This gives floating ball valves their name as this causes the ball to float downstream of the flow so that it presses against the seat to creating its own seal. Used in many hydrocarbon process applications, ball valves are capable of throttling gases and vapors and are especially useful for lowflow situations.
Functionality and seating technology for floating ball valves flow. When floating seats are used in a floating ball valve, they can be one of two basic designs. When one talks about floating ball valves, most people think of a valve with fixed seats and a floating balls usually smaller valves inrelatively low. Floating ball valve floating ball valves dont have the added steading component of the trunnion and are instead connected only to the stem. The stem internally inserted as function of backseat to with stand with working pressure. Floating ball valves floating ball valve is a form of quarterturn valve which uses a hollow, perforated and pivoting ball called a floating ball to control flow through it.
Ball valve design feature free download as pdf file. Firesafe certified, floating ball, blow out proof stem, flanged connections. Generally, floating ball valves are used for lower pressure ratings and smaller sizes. All the ballfloat shutoff valves i could find were designed as a simple shutoff valve to prevent overfilling of large storage tanks. 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. Ive been looking for a simplistic ballfloat shutoff valve for weeks and cannot find them anywhere. Like their counterparts, floating ball valves have a ball with a hole bored straight through the center. Balon corporation manufacturer of floating ball valves. The ball is not rigidly held on its rotational axis and so is free to float between seat ring. Seat designs, stembearing system and stem seal arrangements ensure consistent minimal torque values.
Floating ball valve manufactured by btl may be divided into cast steel floating ball valve and forged steel floating ball valve by different material forming approaches. Balon manufactures valves for a huge variety of applications in the oil and gas industry. Balon corporation manufacturer of floating ball valves, trunnion ball valves, swing check valves and needle valves for the oil and gas industry. The valves are of floatingball design where the ball. Floating ball valves microfinish floating ball valves are available in both reduced bore and full bore designs. F ball valve f leading valves design and manufacturer. Floating ball valve is for medium and low pressure conditions for various corrosive and noncorrosive mediums. Sales representatives are immediately available for inquiries, quotes, support and questions. Din standard ss304 trim forged floating ball valve, ball valve design according to api6d,bs5351,asme b16. Besides a size flexibility advantage, a trunnion valve features a lower operating torque compared to a floating valve design which can become a benefit when the valve needs to be actuated, as smaller and economical actuators can be fitted to operate the valve. 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. 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. Dn 25 nps 1 up to dn 50 nps 2 trunnion ball design.