It is interesting that Flowhead and wellhead have the same word head. For other name surface test tree and x-mass tree, they also have same word tree. Why they have same word in their name? Please let us explain same and different points between them.
In our production scope, we will meet with different kinds of safety valve, Safety valve, SCSSV, and SSV. But all safety valves apply same part — spring. We will find their difference by description and photo.
Sometimes, customers ask us for API 6A valve, but description is too simple and which lead us to consider API 6D valve. So we consider writing something to show normal description difference between valves belong to two standards.
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