Inverted sealgateIt means that there is a sealing surface in the middle of the valve stem, and a sealing seat inside the bonnet. When it is fully opened, it contacts together to play a sealing role, reducing fluid erosion to the packing, extending the service life of the packing, and reducing the external The possibility of leakage.Generally for gate valves,Shut-off valveAll have the requirement of inverted sealing.
Inverted sealgateIn the fully open state, there is a sealing structure at the connection between the valve disc and the valve stem and the inside of the valve stem and the bonnet (ie the bottom of the stuffing box). When fully open, the two contact and squeeze together to play a sealing role and reduce The internal pressure erodes the packing in the stuffing box, prolongs the service life of the packing and reduces the possibility of leakage.Generally, gate valves and globe valves have reverse sealing requirements.
The gate valve is one of the most commonly used valves for shut-off medium circulation. Its sealing element is the valve plate, so the gate valve is also called the gate valve.Most gate valves are mandatory sealing valves, that is, when closing the valve, pressure must be applied to the valve plate.When the gate valve is fully open, the flow path is straight, and the valve plate is hardly scoured by the medium.The inverted seal gate valve is equipped with an inverted seal device. After the valve is fully opened, an inverted seal is formed, and the packing can be replaced under the normal operation of the system.