Valves doehdbk1018293 valve functions and basic parts valve functions and basic parts valves are the most common single piece of equipment found in doe facilities. Again the orientation of the butterfly determines the flowrate. After the installation of the ball valve a functional test must be carried out. If the valve is opened, the ball rotates to a point where the hole through the ball is in line with the valve body inlet and outlet.
When viscous materials are handled, jc steam jacketed ball valves are recommended to prevent valve to be blocked in closed position. This has been remedied somewhat with the trunnion mounted ball valve design, but should still be a consideration for those looking at ball valves for situations where high throttling is a must. Ball valves can either be manually operated or automated as in manual ball valves. Valbart trunnionmounted ball valve design features 1 independent ball and stem the ball and stem are independent to minimize the effect of the side thrust generated by the pressure acting on the ball. Ball valves, general purpose and special application60 series 5 60 series ball testing plasticseated valves every 60 series ball valve is factory tested with nitrogen at psig 69 bar or its maximum working pressure if less than psig 69 bar. The ball valve is an inexpensive alternative to other valves. When assured valve shut off and absolute isolation are required, dafram provides double block and bleed valves that consist of two main inline isolation valves and a bleed valve, used to drain or vent trapped fluid between the two obturators. This purpose of this document is to support the pr. The biggest disadvantage of ball valves is that most designs have poor throttling characteristics that can cause the seat of a ball valve to easily erode. In my home automation system, i tested the operation of the valve on a quarterly basis. A ball valve is a valve that opens by turning a handle attached to a ball inside the valve. To select the correct valve to fulfill these functions properly, an outline of the different types of valves and their features is given below.
Ball valves, general purpose and special application 60. When the hole in the ball is orientated in the same direction as the pipe, this will result in full flowrate. To accurately determine the flow capacity of a valve, a valve constant c v value is customarily used. The valves shown in figure 362 and figure 363 are also designed to ensure a preload between the. Flanged singlepiece ball valves welcome to fnw valve. Resilientseated ball valves featuring memoryseal seating technology, low emissions packing chambers, and other valueadded technical features for superior performance.
Ball valves actuators pneumatic actuators electric actuators parker autoclave engineers ball valves can be supplied with either pneumatic or electric operators for automated or remote operation. When the valve is closed, the hole is perpendicular to the ends of the valve. Flanged ends, manually operated or with gear or penumatic or electric actuator. F ire safe is standard design of all neway ball valve. A wide variety of function of ball valves options are available to you, such as high pressure. The principle of the ball valves lies in the use of a ported spherical plug which is rotated between two. Ball valves use a metal ball with a hole bored through the center, sandwiched between two seats to control flow.
However, if an actuator with auxiliary switches is required, you may fieldassemble a ball valve assembly using a ball valve bodylinkage assembly vb2x5009xx. National regulations must be observed when using the ball valve in potable water applications. Table of contents section e section side entry trunnion b ball valves b1 b6 side entry ball valves are valves where the ball is assembled from the side part. Primary on off valves are ball, gate, diaphragm, and. Brass ball valves twopiece body full port blowoutproof stem ptfe seats v2 600 psi41.
All 3 piece ball valves are available to buy online from valves online. The 4 types of ball valves single body, split body, top. As stated above, the orifice seat and seal appear in many forms. The manual ball valve in the photo is there as a bypass in case the motorized valve ever gets stuck in the closed position. The ends of the ball valve must not be turned in any further or unscrewed because this leads to an increase of the breakaway torque or to leakage. Valve types and features the three basic functions of valves are. A floating ball has only one support from the top of the ball, and it is free to move against the downstream seat while the pressure is rising. Cwp t58070sv sizes 1 thru 2 t58570sv sizes thru 1 threaded ends page 22 bronze 3way ball valve 400 lb. What are the functions of check valve, gate valve, foot. Ball valve with floating ball and torsion seats, with axialentry body. Barb x barb 3 comp x comp 5 comp x sweat 1 fip x pushtoconnect 1 female pipe thread 3 ips pe x ips pe 1. Ball valves process systems stocks a wide range of ball valves including 316 stainless steel, nickel plated brass, upvc, 2 way, 3 way, v port, threaded, flanged and fire safe.
Product title sharkbite 222220000lfa ball valve, water valve shut. Most ball valves are also equipped with soft seats that conform readily to the surface of the ball. V01 v01 two way straight valve v02 v02 two way angle valve v03 v03 three way valve two pressure connections v04 v04 three way valve one pressure connection f01f01 soft check valve f02f02 ball check valve f04f04 elbow f05f05 tee f06f06 cross f08f08 union coupling f09f09 bulkhead coupling f10f10 cap f11f11 plug. Double block and bleed function ball seats independently shut off the line fluid on the upstream and downstream side of the ball.
Valtorc has a vast selection of stainless steel, carbon steel, cast iron, brass, pvc in 2way, 3way, 45way configurations and special purpose valves for high pressure and high temperature valves. You can also choose from manual function of ball valves, as well as from stainless steel, plastic, and brass function of ball valves there are 714 suppliers who sells function of ball valves on, mainly located in asia. Control valves are an increasingly vital component of modern manufacturing around the world. In a typical pinch valve, an allrubber sleeve is pinched closed very much like the garden hose in this case, the. Explore our vast selection of manual ball valves today. Ball valve assemblies with smartx actuators selection guide. Ball valve assemblies with smartx actuators use the basic actuators. The pvcu ball valve type 375 is a costeffective manual valve, specially. Neway soft seat ball valve fire safe test was witnessed and certified by lloyds register. A ball valve is a quarterturn rotational motion valve that uses a ball shaped disk to stop or start flow. Soft seated 3piece body trunnion mounted ball valves f18tkt60 series. Butterfly valves use a similar principle to ball valves. These valves are quick opening and provide a very tight closure on.
Naf duball dl ball valves nfends4167a4 215 an easytoservice arrangement, due to the offcenter joint face of the valve body, which allows for easy replacement of the ball and seals, without the need for removing the stem and actuator. However, instead of a ball mounted in the valve body a circular disc called a butterfly because the two half circles around the vertical shaft appear like wings. All ball valves are available with pneumatic, electric and manual operation. Most ball valves are available in threaded npt ends, socket weld, flanged ansi 150300600, buttweld and sanitary triclamp ends full port. This can be removed by partially opening the valve, exposing the cavity to the through port of the ball. Gas brass ball valve with tee handle code size l h w approx kg mvgast008 8 49. The ball 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. The valves primary function is to provide positive shutoff or to control flow of the process fluid. You can also choose from manual function of ball valves, as well as from stainless steel, plastic, and brass function of ball valves there are 714 suppliers who sells function of ball valves on, mainly located in. Thus, from the point of sealing, the concept of the ball. Flow rate increases as an increasingly ascending curve as the valve. For example, a 1 threaded pvcepdm ball valve with a 30. In stock at store today 7 choose your preferred store.
This combination allows for little friction loss and unrestricted flow. The grabcad library offers millions of free cad designs, cad files, and 3d models. Join the grabcad community today to gain access and download. They ensure the perfect tightness of the valve and in the same time the upstream one can be used as maintenance tool to work on the downstream one. These types of ball valves have an oversized ball, and the hole within the ball is the same size as the pipe to which the ball valve is connected. Used in many hydrocarbon process applications, ball valves are capable of throttling gases and vapors and are especially useful for lowflow situations.
If the valve is closed, the ball is rotated so that the hole is perpendicular to the flow openings of the. Shop manual ball valves today at your premier online valve store for over 50 years. Side and bottom port valveordering information to order side port entry valve, replace with ss, to order bottom port entry valve, replace with b. Our inhouse computer controlled fire test facility is capable of testing and certifying of neway floating and trunnion mounted ball valves per api 6fa and api 607. Ball valves are durable and typically work to achieve perfect shutoff, even after years of use. The ball valve consists of a highly polished ball place within the body of the valve. Valves in this category stop and restart system fluid flow. Pdf ball valves, issues and material selections for manufacturing. Matching valve type to function swagelok southwest. The plumbers choice replacement lever handle for 1 in. For the valves to function correctly in the long term, they. Chromeplated solid ball stainless steel ball and stem option baa compliant to meet requirements of many federally funded projects nsf 372 lead free 150 wsp600 wog asme b 1.
The ball contains a vent passage that intersects the ball ori. The springreturn function failed two years after installation. In a typical pinch valve, an allrubber sleeve is pinched closed very much like the garden hose in this case, the sleeve functions both as seat and seal. Split body ball valve, carbon steel body, floating ball concept, bolted bonnet, side entry, antiblow out proof stem. Cwp t or s58570su sizes thru 2 threaded or solder ends page 18, 19 twopiece safety vent bronze ball valve 600 lb. Pneumatic and electric operators can be supplied with a variety of. Lead free material is suitable for all potable water supplies. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Flow information for ball and butterfly valves the information provided in this section allows the user specifying valves to determine rates of flow through,or pressure drops across jamesbury valves. Ball valve with floating ball and diaphragmsupported seats, with sandwichsplit body. The control valve handbook has been a primary reference since its first printing in 1965. They feature a blowoutproof pressure fullport orifice which ensures minimal pressure drop.
Process ball valve vent options 3 internal ball vents2way valves purpose the internal vent equalizes pressure in the ball and body to that of the system, protecting the valve from temperatureinduced overpressurization. Ball valves ball valves, as the name implies, have a ball with a hole drilled through the centre swivel mounted within the valve body. The seat matching the ball is circular so that the seating stress is circumferentially uniform. The valve bore and the body cavity are isolated from each other when the valve is fully. A ball valve is a quarterturn rotational motion valve that uses a ballshaped disk to stop or start flow.
The actuator dimensions can be found on the respective actuator data sheet. Properly selected and maintained control valves increase efficiency, safety, profitability, and ecology. Direct flange ball valve khzf3 khzf6 up to dn50 pn420 79 iso 6164 flanged ball valves khf dn 80 up to pn400 81 32 way ball valves khb3k up to dn50. Check new retrofit cap assembly to assure that new seal is in place white gasket. Type data sheet ball valve butterfly valve with pneumatic.
Ball valves ball valves are a species of plug valves having a ball shaped closure member. 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. Standard vball cuts are used to provide a predetermined flow rate based on the angle of opening. V86 3way ball valve is designed to switch media through the inlet port and direct it to out of two outlet ports. No components of the ball valve such as adaptors or top. The body construction comes in 2 or 3pieces depending on the sizeclass.
The higher pressure the tighter valve is the basic principle of a. Although there are many types, shapes, and sizes of valves, they all have the same basic parts. Direct flange ball valve khzf3 khzf6 up to dn50 pn420 79 iso 6164 flanged ball valves khf dn 80 up to pn400 81 32 way ball valves khb3k up to dn50 up to pn500 85 changeover. Identification of ball valves according to the function, valve number and fluid. Ball valves lfb6080g2, lfb6081g2 2piece, full port, lead free bronze ball valves these forged ball valves are used in commercial and industrial applications for a full range of liquids and gases. 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.
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