The most common types are ball valves, butterfly valves, globe valves, and gate valves. In automatic control terminology, a control valve is termed a final control element. Gate valves are general service valves that can be made in a broad spectrum of sizes using a variety of different materials. Different types of valves with pdf file engineering discoveries. In our discussion of the world of maritime supplies, a detailed listing of valves is a necessary procedure. Valves, types and operations free download as pdf file. Mixproof valves provide maximum flexibility and safety in hygienic flow processing by making it possible to handle two different fluids at the same time, with no risk of crosscontamination. Choke valve, butterfly valve used to limit air intake in internal combustion engine. Type 316 may be used in sea water but can suffer crevice corrosion unless subject to galvanic protection. Chapter 6 addresses the selection and use of special control valves. Different types of control valves instrumentation tools.
Gate valve is the most common type of valve in any process plant. Poppet valves download technical data sheet sponsored by why choose quickconnect fittings. Chapter 5 is a comprehensive guide to selecting the best control valve for an application. For any piping system, valves are very important and used to management the circulation and pressure of contents, whether that is oil, gas, fluid or fumes. It is used to connect pipes of different diameters. Explain fully the procedure taken before drydocking a vessel and the precautions. Types of valves free download as powerpoint presentation. Different types of valves used in piping a complete. Control valves are available in different types and shapes. Tee it is an important fitting with a side outlet at 900 to the run of the pipe. Process valves symbols icons for planners, designers and piping engineers. It is recommended that you download this pdf document and. Valve types and features the three basic functions of valves are. A comparison of the properties of different types of spheroidal graphite cast iron for valves as per en 1563 7.
A clapper valve is a type of check valve used in or. Alloy 20 used for sulphuric and phosphoric acid duties. Different types of valves used in piping a complete guide of pipe. Different types of solenoid valves a wide range of solenoid valve types are available depending on your specific application requirements. A valve without integral line flanges, which is installed by bolting between. Here are some of the types of valves and their functions.
Learn about the different types of valves used in the oil and gas industry and their differences. Gate valve, globe valve, fixed cone valve, needle valve and pinch valve. Rotary valves also referred to as quarterturn valves these types of valves rely on the rotary motion of the flow obstructer in most cases this rotation is limited to 90 degrees one quarterturn, however, there are valves that operate using a larger degree of rotation and have more than 2 positions that are used in regular operation. Process valves symbols icons for planners, designers and. Fluid is routed to or from the work ports as the spool slides between passages to open and close flow paths, depending on spool position. This job is easier than it is for the plate and ring type valves. The hydraulic valves direct the liquid medium with respect to the hydraulic system. What are hydraulic valves type of hydraulic valves.
Valves and pipeline supplies valve types there are a large variety of valves and valve con. 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. A closer look at 10 different types of valves world wide. They come in variable sizes, as per the international standards. Valve is a device that regulates, controls or directs the. Digital ebook a design world resource the application of. Hydraulic valve types have many categories, although the valve function is four kinds as generally used in industry. This type of corrosion will decrease the cfactor and the. Check valves a check valve is a mechanical device, a valve, that normally only allows fluid to flow through it in one direction. There are many valve designs and types that satisfy one or more of the functions identified above. Chapter 4 describes digital valve controllers, analog positioners, boosters, and other control valve accessories.
Duplex super austenitic super duplex more corrosion resistant than type 316 especially to chloride scc. To select the correct valve to fulfill these functions properly, an outline of the different types of valves and their features is given below. Tees connect pipes of various diameters and help in changing the direction of water or material in a pipe. Not to be confused with choke valves used in industrial flow control. Valves program objectives by the end of this module, trainees will be able to. Identify the various types of pipe joining fittings used in piping systems. They are designed such that if the air supply fails, the control valve will be either fully open, or fully closed, depending upon the safety requirement of the process. Valves can be categorized also based on their function. A list containing globes, gates, checks, angles and strainers can only mean were taking a closer look at different types of valves. Different types of valves with pdf file engineering. The valves and fittings ceu training course uses a multiple choice type answer key.
They are only to be used with media, which the material and the seals are resistant to. There are only have the right hydraulic valves for the different working positions, no hydraulic. Regardless of type, all valves have the following basic parts. Api and asme gate, globe, check, ball, and butterfly designs manual or actuated, with forged and cast bodies.
Using two independent plugs and seals means a single mixproof valve can often replace two or more valves of other types. Briefly said, valves are mechanical devices used in piping applications to control, regulate and openclose the fluid s flow and. 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. General categories of control valves control valve in this discussion means any poweroperated valve, whether used for throttling or for onoff control. The purge valve is the part of the vehicle evaporative exhaust control evap system. Control valves operated through pneumatic actuators can be either. A simple quarterturn 90 completely opens or closes the valve. A reducer may be of various types like reducer tee, reducer elbow and reducer socket fig.
Many different types of manual valves are used in industrial applications worldwide. It is a linear motion valve used to start or stop fluid flow. Fundamentals of valves and their types instrumentation tools. Globe valves a globe valve is a linear motion valve used to stop, start, and regulate fluid flow. Different types of solenoid valves mga controls ltd. Types of valves classification and description valvias. The basic parts of a valve are illustrated in figure 1. Basic valve types valves are available with a wide variety of valve bodies in various styles, materials, connections and sizes. Different types of industrial valves and its functions. A double check valve is often used as a backflow prevention device to keep potentially contaminated water from siphoning back into municipal water supply lines. Advantages o recommended for throttling applications. Home types of valves types of valves types of valves. The most common slidingaction valve is the spool type valve fig. In this article, i have covered classifications of valves and functions of valves.
The three basic models of hydraulic valves are pressure control, flow. In a particular hydraulic system, the hydraulic valves perform different functions and allow the system to operate well. Failsafe action may involve the use of auxiliary controls connected to the actuator. A multitude of valve types and designs safely accommodate a wide variety of industrial applications. Valves, types and operations valve hydraulics scribd. Digital ebook a design world resource inside high flow in a miniature package. Spool valves readily adapt to many different spoolshifting schemes, which broadens their use over a wide variety of applications.
Types of manual valves tlv a steam specialist company. Ball valves ball valves offer very good shutoff capabilities. Some valves are capable of throttling flow, other valve types can only stop flow, others work well in corrosive systems, and others handle high pressure fluids. The three primary body designs for globe valves are zbody, ybody, and angle. Corrosion protection of valves in spheroidal graphite cast iron. Austenitic type 304 unsuitable for use in sea water. The various functions of a solenoid valve depend on the type of valve you have, and the operation you need the valve to perform. Selection is primarily dependent on the service conditions, the task, and the load characteristics of the application. The standardization of modular type valve connections is progressing smoothly.
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