Cast iron metal seat gate valve are used in many industrial or water suppling. The cost of metal seat gate valve are higher than rubber seat gate valve. But when you use the gate valve in medium with some particles,slag slurry, you have to use metal seat gate valve. And the metal sealing gate valve have longer service lifetime than rubber gate valve.

On the other side, the advantage of resilient seat gate valve is the 100% sealing. The metal seat gate valve design can not reach 100% sealing. It is normally used to water industrial.

On the other side, the advantage of resilient seat gate valve is the 100% sealing. The metal seat gate valve design can not reach 100% sealing. It is normally used to water industrial.