Camerontype 31 welded body ball valve installation, operation and maintenance manual page 7 of 20 hydrostatic testing when cameron ball valves are installed in a piping system that requires hydrostatic testing of the adjoining pipe, follow these procedures to minimize any damage that could occur to the sealing surfaces and seat seals inside. Valve is a device that regulates, controls or directs the. Preliminary analysis of a innovative type of low pressure valves. Gemco valve product catalog our valves, airlocks, diverter valves, and retractable sleeves have been meeting the demand for products that control the flow of solids and slurries for four generations. Valves program objectives by the end of this module, trainees will be able to. Stock images by ekipaj 10 233 pressure valves stock image by xtrekx 2 76 gas industry. Since the ball moves across the seats in a wiping motion, ball valve is an excellent and cheapest shut off device for dn50 and lesser chw pip. Chapter 4 describes digital valve controllers, analog positioners, boosters, and other control valve accessories.
In piping following types of valves are used depending on the requirements. Hand valves and accessories hand valves and accessories soft seated valves hard seated valves mini valves soft seated valves mini valves. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to. A valve without integral line flanges, which is installed by bolting between. In this article, i have covered classifications of valves and functions of valves. Different types of valves with pdf file engineering. The closure member has conical shape, and it moves in the axial direction of the tube. Annular valves are suitable for regulating flow and pressure. Gate valves are used in almost all fluid services such as air, fuel gas, feedwater. Pdf preliminary analysis of a innovative type of low. The ratio fl of the valve flow coefficient cv based on the pressure drop at the vena contracta, to the usual valve flow coefficient cv which is based on the overall pressure drop across the valve in nonvaporizing liquid service.
Get the control valve study material on all types of valves used in industries which include ball, butterfly, globe, gate, diaphragm, etc. Class 150 gate valves consist of a square joint in 2 and an oval one for all other sizes. A valve is a mechanical device which regulates either the flow or the pressure of the fluid. They are prepared to work against all column water pressure without cavitation.
Free wordpress themes download highquality templates. A closer look at 10 different types of valves world wide. Subscribe now and get your free ebook on piping components. A trunnion ball valve has additional mechanical anchoring of the ball at the top and the bottom, suitable for larger and higher pressure valves say, above 10 cm and 40 bars. The last way to classify the valve is, types of the actuator is used to transfer the motion to. Many different types of manual valves are used in industrial applications worldwide. Because of the diversity of the types of systems, fluids, and environments in which valves must operate, a vast array of valve types have been developed. Ball valves ball valves offer very good shutoff capabilities. It provides a description of all generic valve types together with their operating conditions. There are many valve designs and types that satisfy one or more of the functions identified above.
Types of valves classification and description valvias. Seat leakage required for these control valves is typically class iv or class v. This characteristic minimizes valve operation time and decreases the likelihood of leakage due to wear from the gland seal. Download valve catalogue, pdf drawing, ga drawing, cross sectional arrangement design drawing, 3d model drawing, valve strainer filter sight glass flow indicator operation and maintenance manual download from here free. It is recommended that you download this pdf document and assignment to your. Through simplicity of design, togather with compact styling and utilization of high tensile strength material, a low initial cost is achieved. The file format created by adobe systems in 1993 is used for representing twodimensional documents in a manner independent of the application software, hardware, and operating system.
To select the correct valve to fulfill these functions properly, an outline of the different types of valves and. Control valve terminology hvac, valves and industrial. Usually used in water pipework systems and installed immediately after the pump. Valves butterfly valve manufacturer from ahmedabad. The valves have been in operation for well over 8300 hrs and still going strong. The pulmonary valve and the main pulmonary artery can be assessed with tee in the basal view.
All the steam stop valves, pressure reducing valve, safety valve, strainer and saperator are manufactured completely in house and tested individually to achive best quality and performance. Gate valve, globe valve, fixed cone valve, needle valve and pinch valve. Its function can be stopping or starting the flow, controlling flow rate, diverting flow, preventing back flow, controlling pressure, or relieving pressure. Valves can be categorized into the following types, based on their operating mechanism. Some of the different types of closure members are the ball, disk, gate, and plug.
The flow goes around the closure member when the valve is open. To select the correct valve to fulfill these functions properly, an outline of the different types of valves and their features is given below. Companies like 3m, pfizer, kraft, dow, and ge rely on our valves in critical processing environments. Top lines ball valves are utilized by firms which demand the uncompromised ability to regulate flow from full flow. Valves and valve assemblies hvac, valves and industrial.
Ball valve, for onoff control without pressure drop. Different types of valves used in piping a complete guide of pipe. In our discussion of the world of maritime supplies, a detailed listing of valves is a necessary procedure. Assemblies feature the latest in quarterturn automation, rack and pinion actuator design. Ball valve, butterfly valve, plug valve, spherical. Different types of valves used in piping a complete. An isomerisation process can be used to improve the octane numbers of light straightrun naphtha. Types of valves a gate valve b globe valve c angle valve d swingcheck valve e disktype gate valve from fluid mechanics, by f. Gemco valve pdf product catalog online gemco valve. Valve types and features the three basic functions of valves are. Valves doehdbk1018293 types of valves summary the following important information in this chapter is summarized below. Valves flanged, threaded, and welding end design basis for all kinds of valves, including pressuretemperature ratings, dimensions, materials. Define a valve identify the different types of common valves used at sunrise dam and their purposes understand the hazards and safe operating practices for valves.
There are a few types of ball valves related to the attachment and lateral movement of the ball. Valves can be categorized also based on their function. Class 900 and above gate valves consist of a ring type joint. Types of valves and their applications and selection criteria. Class 300 and 600 valves consist of a circular spiral wound gasket. Valves has different symbols and types for different purpose. Types of manual valves tlv a steam specialist company. Portable document format pdf is an open standard for document exchange. The stem threads are rolled and lubricated to prevent galling and reduce operating torque. Types of valves summary gate valves are generally used in systems where low flow resistance for a fully open valve is desired and there is no need to throttle the flow. A special trim used in control valves to stage the pressure drop through the valve, which will either prevent the. Ball valves are quarter turn valves, commonly used for bidirectional isolation applications. A list containing globes, gates, checks, angles and strainers can only mean were taking a closer look at different types of valves.
Examples of the common types are the globe valve, gate valve, ball valve, plug valve, butterfly valve, diaphragm valve, check valve, pinch valve, and safety valve. Process background size 14 38 12 34 1 114 112 2 212 3 4 seat material industrial 15% glass reinforced ptfe 25% carbon reinforced ptfe 50% ss reinforced ptfe uhmw connection industrial. Failsafe action may involve the use of auxiliary controls connected to the actuator. This type of ball valve is known as cavity filler ball valve. White, mcgrawhill, 1999 butterfly valve used mainly for onoff lots of torque needed for high flow rates from chemical process control, by j. Valtorc usa 3way carbon steel ball valves offered in t port or l port configurations up to 1 inch in size. The following article will cover the general mechanism and function of the most typical of these valves used in steam systems, such as ball valves, butterfly valves, globe valves, gate valves, and diaphragm valves according to jis, a valve is defined as. Each valve is built to exacting specifications and is constructed to perform flawlessly in the most hostile environment. Mechanical science module 4 valves a free resource for. Parker manually, pneumatically, and electrically actuated threeway b series ball valves may be used as diverting or selecting valves for fluids utilized in process and instrumentation applications. A multitude of valve types and designs safely accommodate a wide variety of industrial applications. Regardless of type, all valves have the following basic parts. Chapter 5 is a comprehensive guide to selecting the best control valve for an application. A simple quarterturn 90 completely opens or closes the valve.
Pdf the design, selection and application of valves for slurry. Pdf a survey of valves for slurry applications carried out for the wet solids handling. However, if cast valves are made properly, they can and have worked equally well in a variety of services and usually at a much lower cost than forged valves. Valves common types check non return valves check valves or non return valves are designed to ensure one way flow only. Valve design testing manufacturing international standard download free. The most common check valve is the disc type horizontal or vertical. Depending on the valve service it can be supplied flatface gasket with graphite or ptfe. They are also more leakprone than ball valves and subject to higher head losses. Manual onoff valves he metric series ordering data, accessories ordering data 32way valve, operating pressure 0 16 bar, normally closed size connection part no. Valves pipe fittings flanges pipes pressure gauges. Chapter 6 addresses the selection and use of special control valves. Pipes, bolts, valves against blue sky stock photo by nostal6ie 15 477 metal valves pictures by gyn9988 2 58 cmyk pipelines with valves stock image by scanrail 7 504 ball valve on a gas pipeline. The standard threeway diverter valve is designed to accept media through the bottom port and direct it out of two outlet ports.
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