What are insulating valves?
Insulating valves are special types of valves that completely prevent the flow of the fluid flow, thus insulating part of the system from the fluid flow. Under normal operating conditions, insulating valves remain open. They are usually only in certain special circumstances, for example for safety reasons or for maintenance or repair of the system, are closed. Such factors are usually taken into account when selecting not only the type of valve to be used, but also the size of the material and the valve. The expected valve function is also generally considered when selecting the valve.
Insulating valves generally fall into two categories: rotary movement valves and linear movement valves. In the rotary movement valve, the part that prevents the flow of the fluid turns around the axis, so it is perpendicular to the liquid when Tvalve is closed. Ball valves and butterfly valves are examples of rotating movement valves. Linear movement valves include the obstacle part of the valve, which moves to or from the flow of fluid in a straight line. The valves of the gates,Globe valves and diaphragm valves are linear movement valves that can be used for insulation in the system.
The ball valve consists of a hollow ball with holes on two sides directly against each other. When the holes are aligned with the flow of the fluid flow, they are no obstacle, so the valve is open. Turning the ball by a quarter of the curve closes the valve because the fixed part of the ball is now in the way of fluid flow. This simple quarter turn makes it easy and easy to turn off the flow of fluids and the ball valves are tight seals. Thanks to these properties, the ball valves are good for insulation valves in various applications.
in the Motýlivcentil, the disk rotates around the shaft so that the disk plane is parallel to the fluid flow when it is open and perpendicular to it when it is closed. Kall valves rather than butterfly valves are usually used as steam insulating valves because the latterThey usually do not reach as tight seals as the former. Butterfly valves are usually used in low -pressure situations and if there is a premium space due to their compact size. They are also often selected when the design of the valve is required in the design because their compactness means less material.
gate valves include a disk that completely pulls the flow of fluid flow at the open current. They are usually used in systems requiring minimal pressure drop and continuous fluid flow. Globe valves consist of a narrowing plug that is pushed in the way of fluid to lower or close its flow. Due to their lower probability of leakage, unlike the gate valves, it is more likely to be used in high -pressure or high -volume or high -volumes.
The pressure is applied to the flexible membrane in the diaphragm valve. This helps to move in the way of fluid and create a seal that prevents its flow. These types of valves are commonly used inApplications with corrosive fluids or fluids containing suspended solids because the liquid never contacted the movable parts of the valve.
Many industries depend on insulating valves for different functions. They are used, for example, in chemical production, processing and transport of oil and gas. Energy production, waste water and mining are other areas in which insulation valves are used. Insulating valves can be used for routine purposes such as insulation of part of the system for maintenance or repair. However, they may be critical in emergencies, for example, in the administration of mechanical barriers in the event of a fire or explosion.