The ornamental design for a portable high pressurecylinderjacket, as shown and described.
FIG. 1 is a perspective view of the portable high pressure cylinder jacket in an upright position;
FIG. 2 is a perspective view of the portable high pressure cylinder jacket in an inverted position;
FIG. 3 is front elevational view of the portable high pressure cylinder jacket;
FIG. 4 is rear elevational view of the portable high pressure cylinder jacket;
FIG. 5 is a left side elevational view of the portable high pressure cylinder jacket;
FIG. 6 is a right side elevational view of the portable high pressure cylinder jacket;
FIG. 7 is a top plan view of the portable high pressure cylinder jacket; and,
FIG. 8 is a bottom plan view of the portable high pressure cylinder jacket.
The structural features depicted in broken lines have been shown for purposes of illustrating portions of the portable high pressure cylinder jacket that form no part of the claimed design.