When it comes to flow control valves, valve types range from simple to sophisticated; some valves are complex enough to adjust automatically to pressure and temperature variations.No matter their construction, flow control valves are designed to regulate the flow or pressure of fluids, … This valve takes fluid input from one source and redirects this fluid to two or more sources. When the valve is in open state, the through hole is in-line with the fluid flow and hence, the fluid passes through it. Control Valve Selection Picking a control valve for a particular application used to be straightforward. This type of valve (which is normally open) is used to maintain reduced pressures in specified locations of hydraulic systems. Several major types of control valves are available; each has pros and cons and may be most appropriate for different applications. Update time of the F-Series flow monitor is extremely fast ( 10ms). This article features several different control valve types, their functions and positioners. Not every valve control type is required on most systems. The … In these applications the control valve will open and close to maintain a set differential pressure between two points. This type of valve is used to maintain constant reduced pressure in a pipeline where the flow is fluctuating. Valve service environments and operating conditions are often extreme with high temperatures (greater than 1,500°F) and high pressure (greater than 25,000 psig) or cryogenic and very low pressure applications. Another feature important to valves used in the oil and gas industry is the capacity for remote control. In the process industries, many valve types are used for process control. There are countless types of valves for use across a variety of industries and applications. The sketch indicates where the different valves could be applied. The differential pressure ensures that condensate is actively purged from the heat exchange system. Typical Applications: Spot welding – where a valve is used to control pressure to a cylinder that applies the pinching force. such that the hole now becomes perpendicular to the flow and hence, stops the flow Each manufacturer offered a product suit-able for the job, and the choice among them de-pended upon such obvious matters as cost, deliv- (a) Types of Control Valves based on Action: Control valves operated through pneumatic actuators can be either (i) air to open. Control valves are available in different types and shapes. They can be classified in different ways; based on: (a) action, (b) number of plugs, and (c) flow characteristics. GlobalSpec offers industrial buyers over 30 valve varieties, each with a unique method of control, function, or media application. Advantages: A constant differential steam pressure is maintained in the system. Most of the industrial applications in process industry uses globe valve as control valves. Globe valves are frequently used for control applications because of their suitability for throttling flow and the ease with which they can be given a specific ‘characteristic’, relating valve opening to flow. Ball valve is a quarter turn operated valve.The closure member is a spherical plug with a through hole. are the types of flow control valves. Finding the valve that works best for a specific application is a challenge. The valve is closed by rotating the globe by 90 Deg. Usually when someone say control valve, then first valve comes in any Engineer’s mind is globe valves. The throttle valve, speed control valve, manifold set flow valve etc. VALVE TYPES There are a large variety of valves and valve confi gurations to suit all services and conditions; different uses (on/off, control), different fluids (liquid, gas etc; combustible, toxic, corrosive etc) different materials and different pressure and temperature conditions. Typical valve applications in agriculture are shown in Figure 2 on the following page labeled TYPICAL CONTROL APPLICATION. Two typical globe valve types are shown in Figure 6.1.1. Another type of flow control valve is flow divider. Globe valve. There are two major methods used to … By Web Desk: Jan … An actuator coupled to the valve spindle would provide valve movement. Different Valve Types, Applications ... Plug valves are valves with cylindrical or conically-tapered “plugs” which can be rotated inside the valve body to control flow through the valve. Usually only one gen-eral type of valve was considered, a sliding-stem valve. This means our mass flow controllers can be used in some of the most demanding industrial applications, including cylinder speed control. The pressure will be set dependant on the material type and thickness being welded and will remain fixed until the machine is set up for a different material. Pressure reducing valve is a type of pressure control valve. Ball Valve. They are very good in terms of control and coupled with actuator and characteristic of valve type, globe valve can be used for wide range. The quarter-turn control ball valve design is generally used to control liquids in throttling applications in which direct control of flow rates dealing with pressure, temperature and liquid levels are critical. (ii) air to close. A monitor signal is available on the control valve for use as data acquisition to your PLC or computer. There are many types of valves available to accommodate a wide range of applications. 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