F5 metal seat gate valve made in China factory face to face dimension is longer than F4 gate valves. It often used in fire and industrial systems, generally installed at a high distance from the ground.This valve overcomes the general gate valve seal poor, elastic fatigue, easy to rust and other defects.It is the replacement of the traditional gate valve, which makes use of the elastic gate plate to compensate for the trace deformation and achieve good sealing effect.