초록 ▼

A throttling choke valve having a wear sleeve lining the interior surface of the cylindrical passage downstream of the valve sealing mechanism. A preferred embodiment of the wear sleeve has a removable retainer ring that fits between the wear sleeve and the fluid outlet. The retainer ring has a dist

A throttling choke valve having a wear sleeve lining the interior surface of the cylindrical passage downstream of the valve sealing mechanism. A preferred embodiment of the wear sleeve has a removable retainer ring that fits between the wear sleeve and the fluid outlet. The retainer ring has a distal end that opens into the pipeline. At the distal end of the retainer ring the thickness of the wall of the retainer is decreased such that the interior surface is curved outward toward the interior surface of the pipeline.

대표청구항 ▼

1. A high pressure choke valve comprising:a valve body having a side inlet passage and an end outlet passage; a seat mounted in the valve body between the inlet and outlet passages, the seat being reversibly plugged with a plug end of a gate; a wear sleeve mounted in the valve body downstream from t

1. A high pressure choke valve comprising:a valve body having a side inlet passage and an end outlet passage; a seat mounted in the valve body between the inlet and outlet passages, the seat being reversibly plugged with a plug end of a gate; a wear sleeve mounted in the valve body downstream from the seat; a retainer ring reversibly mounted in the valve body having a one end adjacent to the wear sleeve and a second end terminating at the outlet passage, wherein the retainer ring has a cylindrical inside diameter except at the second end, said second end diverges toward the outlet passage wherein the second end is curved outward and has an elliptical quadrant profile.