The process of opening and closing the valve is sudden and faster. A safety valve works as the last option for preventing overpressure conditions. It has the capability to operate anytime.
The chance of damages and losses is lessened when the valve is used. The industrial environment brings with it the risk of damage to life and property. The systems or machinery used for working need to be taken proper care of so that no unavoidable situations arise. Therefore, various types of safety devices are introduced to help in the process. Relief valve and Safety valve are two of the most commonly used safety devices that take care of overpressure conditions.
The relief valve maintains the systemic pressure at a specified limit, and the safety valve releases the excess amount of pressure. Both these devices prevent damages due to overpressure conditions. Although they are used for the same purpose, their working ways are quite different.
The relief valve uses an operator while there is no operator in the safety valve. The opening and closing process of the safety valve is faster and sudden in comparison. Relief valves are one of the important safety device fitted to protect the equipment from overpressure.
In every pressurized working system there is a set pressure under which the system works properly and efficiently, this set pressure is known as set point and when the pressure is above set point the relief valve opens and the excess pressure is released. A safety valve is a type of Fail safe device which is used on a system to prevent its failure and malfunctioning.
It works by releasing the pressure when the pressure inside the system exceed a preset pressure, thus preventing the system failure. The safety valve is so constructed that when the pressure gets above the preset limits it automatically lifts and release the pressure. So the basic function of the safety valve is to remove the excess pressure in order to prevent any damage to the vessel. In addition to this, it also ensures that the pressure should remain within limits in the near future.
It is made very sensitive such that even for a slight increment in the pressure lifts the safety valve and gets closed quickly as soon as the pressure is released to maintain the desired pressure in the vessel. Or we can say that the relief valve releases the excessive pressure from a system to control the pressure level in the system. On the other hand, the safety valve is a protective device which is used in a system to control the pressure inside the system under a predetermined limit.
It works by releasing out the excess liquid or gases when the pressure becomes too high which can damage the vessel. The pressure relief valves are generally used in the hydraulic systems to control the pressure within specified limit and when the pressure increases than the preset value. It lifts up and provide an escape of the excess pressure through an alternate channel or bypass provided in the system back to the source from where the input is coming or may be a different chamber provided to accept the excess of the liquid.
On contrary in case of safety valve, the main function of the safety valve is to provide safety to the property, life, and the environment which can get damaged due to failure of the system because of the excess pressure.
Relief Valve: Is There a Difference? That said, relief valves and safety valves do function slightly differently: Relief Valves are designed to control pressure in a system, most often in fluid or compressed air systems. These valves open in proportion to the increase in system pressure. Instead, they open gradually, allowing the system to return to the preset pressure level.
When that level is reached, the valve shuts again. Safety Valves are used for one reason — safety. Safety Valve A relief valve, also known as pressure relief valve PRV or safety relief valve, is type of a safety valve device used to limit or control the pressure level in a system within a safe threshold limit to avoid an overpressure condition.
Function Pressure relief valves are mainly used in hydraulic systems to limit the pressure in the system to a specific preset level and when the pressure reaches the safety design limit, the relief valve responds by releasing the excess flow from an auxiliary passage from the system back to the tank in order to prevent equipment failure. Operation of Relief Valve vs. Safety Valve For a safety relief valve, the opening is directly proportional to the increase in the vessel pressure.
Relief Valve vs. Safety Valve: Both relief valves and safety valves are high-performance pressure-sensitive safety devices so designed to control or limit the pressure inside the system or vessel by releasing the excessive pressure from the auxiliary passage out of the system. Author Recent Posts.
Sagar Khillar. He has that urge to research on versatile topics and develop high-quality content to make it the best read. Thanks to his passion for writing, he has over 7 years of professional experience in writing and editing services across a wide variety of print and electronic platforms. Outside his professional life, Sagar loves to connect with people from different cultures and origin. You can say he is curious by nature.
He believes everyone is a learning experience and it brings a certain excitement, kind of a curiosity to keep going. Latest posts by Sagar Khillar see all. Help us improve. Rate this post! Cancel Reply.
0コメント