FEED CHECK VALVE ENGINEERINGFEED CHECK VALVE ENGINEERING

FEED CHECK VALVE ENGINEERING.pptx

1. GOVERNMENT POLYTECHNIC GONDIA Department Of Mechanical Engineering Micro Project PPT ON ‘FEED CHECK VALVE’ Under The Guidance Of Y. P. Nimje Sir Maharashtra State Board of Technical Education, Mumbai (Autonomous) (ISO-9001-2008) (ISO/IEC 27001:2013) Academic Year 2022-2023

2. 2023 presentation title 2 Sr. No. Topic Page No. 1 Introduction 1 2 What Is Feed Check Valve 2 3 Advantage Of Using Feed Check Valve 3 4 Advantage Of Using Feed Check Valve 4 5 Disadvantage Of Using Feed Check Valve 5 6 Functions Of A Feed Check Valve 6 7 Working Principle Of A Feed Check Valve 7 Index

3. Introduction The feed check valve is fitted in the water space of the boiler slightly below the normal level of the water. It consists of a check valve CV which moves automatically up and down under the pressure of water on its gun metal seat. FV is the feed check valve which can be raised or lowered on its gun metal seat, thereby opening the delivery passage and its opening controls simultaneously lift of the check valve CV. F is the flange which is bolted to the front end of the boiler shell at a point from which an internally perforated pipe leads the feed water and distributes it near the working level of the water in the boiler. The feed check valve CV is operated by the hand wheel H to control the supply of water to the boiler to maintain the water level constant.

4. 2023 presentation title 4 Feed Check Valves are one of the most important components of boiler which control the now of water from feed pump to the boiler and further prevents chebacco of water from boiler to pump when the boiler pressure is more than the pump pressure or when feed pump stops working.   Feed check valves are a development of our boiler valve range of Screw-down Stop Valves and the design makes use of a covenantal Angle Parent Stop Valve to which is connected a separate inlet branch which houses the check valve. This check inlet branch is of unique design in that the check valve head and its guide are arranged below the faceoff the cornicing Ange enabling the branch to be withdrawn without disturbing the feed piping. WHAT IS FEED CHECK VALVE ?

5. Advantage of using Feed Check Valve Following are the advantages of using Feed check valve: 1) Prevents backflow 2) Maintains pressure 3) Serves as backup system 4) Most can be used horizontally as well as vertically

6. 2023 presentation title 6 Disadvantage of using Feed Check Valve Knuckle joints give most of the benefits but they also have some drawbacks, which are as follows: Can't be used with pulsating systems Closing element may slam close causing damage and excessive wear

7. 20XX presentation title 7 Functions of a feed check valve To allow the feed water to pass/enters into the boiler. To prevent the back flow of water from the boiler, when the feed pump pressure is less than boiler pressure or pump is stopped by using of a non return valve.

8. 20XX presentation title 8 Working Principle of a feed check valve Inlet and outlet pipe of valve expose different pressure. At the inlet of valve the feed pump pressure acts and outlet pipe of the valve the boiler pressure acts. When the feed pump is in operation. The pressure on the feed pump side (inlet) is more than pressure on the boiler side (outlet). This pressure difference lifts the non return valve and allows water flow into boiler.

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