Seats for top entry valves
Top Entry seats are mainly used in critical applications, all types of pressure and operating temperatures.
In addition to the seat, the top entry valve includes two other components, such as the spring holders and the sector spacer.
In the designs, the spring holders adjust inversly to the size of the seat: high seat and low spring holder or the opposite.
The choice of Top Entry Valves is better when there is a need for maintenance, without having to move the valve. It is possible to remove the bolted lid at the top of the valve to access the body, allowing you to remove ball and seats.
For this kind of seat the seal can be soft or metallic, with single-piston or double piston-effect solutions.
Types of metallic, thermoplastic, elastomeric materials are the same as those used for other seats.