Wedge gate valves are sealed with a wedge sealing surface, and the tightness of the sealing surface fit can be adjusted by handwheel loading.
Fracking manifold is a high-pressure manifold used in oil well fracturing operations.
Casing hangers are divided into two categories: threaded type (mandrel type) and cava type.
The casing head is a component that connects the casing and various wellhead devices: to support the gravity of the technical casing and the oil casing, to seal the annular interstitial interstitial of each layer of pipe, and to install the blowout preventer.
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