Are Fluorine-lined Gate Valves And Disc Valves The Same Valve?

Yesterday afternoon, a friend asked me if Lined Gate Valve and the gate valve are the same valve. I answered without hesitation that they are the same valve, but they are called differently. Now, looking back, I think this answer is not rigorous enough. Here I will mainly explain some of my views on this issue.
If we only talk about fluorine-lined gate valves and gate valves, then we can say that they are the same valve, or they can be said to be different valves. We know that the opening and closing parts of fluorine-lined gate valves are gates, so they can also be commonly called gate valves. Many of my customers also say gate valves. But there is also a valve called a gate, whose opening and closing parts are also gates, but this valve is different from the gate valve. Some people also call gates gate valves, so fluorine-lined gate valves and gate valves are not necessarily the same valve.
The above is my opinion on whether fluorine-lined gate valves and gate valves are the same valves. I hope everyone can figure out their relationship.