The PARVEEN wireline Retrievable Dummy Valves (PDK -1) have 2 sets of packing which fit in the seal bore of side pocket mandrel and isolate the casing ports between tubing and casing annulus. In other words, the valves are used to prevent communication between the tubing and the casing.
ENGINEERING DATA FOR WIRELINE RETRIEVABLE (PDK-1) DUMMY VALVES
