2.Different Types of Valve Seat Designs
The valve seat adopts an elastic front sealing design, providing dual sealing performance and automatic cavity pressure relief. The seat is fitted with suitable polymer materials such as NYLON, MOLON, DELRIN, or PEEK. The sealing seat is of a floating type and is spring-loaded, ensuring continuous and tight contact between the sealing surface and the ball in the closed position. This design enables the valve to achieve reliable, bubble-tight sealing under both high and low differential pressure conditions.
4.Fire-Safe Design of Valve Seat
According to service conditions and user requirements, the ball valve can be designed with a fire-safe structure. The fire-safe design complies with API 607 and JB/T 6899 standards. In the event of a fire, when the non-metallic sealing materials are destroyed, the metal seat is driven by spring force to contact the ball, forming a metal-to-metal seal. This effectively prevents the spread of fire and leakage of the medium.
