Adjustable throttle into by way of adjustment: adjustable needle, barrel can debug, adjustable sleeve cage, adjustable hole plate nad wedge adjustable design features.
Using caribide needle and spool valve manufacture, resistant to abrasion, erosion-resistant, corrosion-resistant performance
May play a regulating flow, pressure and close and important role
Needle-type structure is mainly used for Christmas tree equipment, simple structure is manly used for choke manifold.
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