What is Sluice valve,Check valve,Reflux valve,Air valve ,Scour valve in hindi|| by Civil Engineering HD

1-SLUICE VALVE- Sluice valves are also known as gate valves or shut- off valves. These valves are provided to regulat the flow of water through the pipe by dividing the mainline into several sections. These valves are usually placed at the summits of the pressure conduits where the pressure is low, thereby requiring low strength and less cost. 2-AIR VALVE- The water flowing through the pipe line always carries some air with it. This air tends to accumulate at the summit of pipe line. Due to the accumulation of air, a backward pressure is created which causes a blockage to the flow of water. So, the air relief valve is provided at the summit point on u/s of gate valve to release the air pressure, Air inlet valves are also provided on the d/s side of gate valve to compensate the negative pressure developed, by allowing the air to enter into the pipe. 3-CHECK VALVE/ REFLUX VALVE/ NON-RETURNING VALVE- These possess some automatic device which allows the water to flow in one direction only. This valve is provided in the pipe line which draws water from the pump. When the pump is operated, the valve is, opened, but when the pump is suddenly stopped the valve is automatically closed and the water is prevented from returning to the pump. 4-SCOUR VALVE/BLOWOFF VALV DRAIN VALVE - Scour valves are also known as wash-out valves. These are similar to the sluice valves, but the function is different. Scour valves are provided at the dead end of the pipe line. The function of this valve is to remove the sand silt etc. Thanks for watching. Like -------------------share--------------------subscribe #environmentalengineering #civilengineering #CivilEngineering