Essay --

1.0 Introduction Valves are mechanical devices that control the flow and gases in the process. They are essential components of piping system that conveys liquid, vapor and gases. They come in variety of material ranging from steel and plastic. There are different types of the valves such as globe, gate, ball, plug and check valve. Each of these valves has different features and functional capabilities. Some valves can self operated (automatically) while the other manually or with pneumatic or hydraulic system. In this report I will talk about the benefits and the useful of the gate valves and the globe valve as well as compare the different between the two valves in term of cost and maintenance. 2.0 Background Gate Valve and globe valves achieves the important function of controlling the flow; they are installed on the piping and pipeline to straight the flow from one location to another and to prevent losses of the flow. Like the faucets in home plumping system that we observed every day, when it is open the flow is begins to move and speed up and when it close the flow will stop moving. Valves comes in different sizes the smallest one can be weight as 1lb (0.50 kg), while the largest valves can weigh up to 10 tones (9070 kg). Deciding the type of the flow or the gas can lead you and help to determine which valve will be suitable for the process. However the valves can be affecting by several factors such as slurry (mixture of the liquid like water or cement) which required Maintenance permanently to avoid the errors of the reading. 3.0 Technology This section will describe the functionality of both gate valve and globe valve and also will show the features of each technology. 3.1Gate valve The gate valve is designed to con... ...he flow to pass through the pipes. There are different types of the valves with different sizes, and each valve has several features that make suitable for different process. The most important feature is the efficiency. Globe valves are installed in parallel position not perpendicular like the gate valve, which make it more efficient than the gate valve in services that required frequent operation and when the pressure drop across the valve. 5.0 Recommendation After studying this report and from the analyzing I recommended to use the gate valves because it’s suitable for the different process and simply operates in fully open and fully close with no pressure drop also its required less maintenance and not expensive, rather then the globe valve which is not recommended where the pressure drop and resistance to flow, it’s preferable only for frequent operation.