High pressure fluid system

A lubrication system for a high pressure jetting system, the lubrication system comprising:

• a valve seat assembly including a discharge valve and a plenum that at least partially circumferentiates the valve seat assembly;
• a housing joined to the valve seat assembly, the housing defining a first lubrication channel in fluid communication with the valve seat assembly plenum;
• a seal cartridge assembly including a reciprocating plunger within a plunger bore and including a seal cartridge packing about the reciprocating plunger, the seal cartridge assembly including a second lubrication channel in fluid communication with the seal cartridge packing;
• and
• an adjustable valve to control a flow rate of a pumping fluid moving through at least one of the first lubrication channel and the second lubrication channel, to thereby selectively lubricate the seal cartridge packing with the pumping fluid.

A high pressure fluid jetting system including a lubrication system using a pumping fluid, the fluid jetting system including:

• a housing having a body;
• a seal cartridge joined to the housing and defining an axial bore therein the seal cartridge having a body;
• a reciprocating plunger extending through the axial bore of the seal cartridge;
• an annular cavity between at least a portion of the reciprocating plunger and at least a portion of the seal cartridge, the annular cavity including a packing;
• a lubrication flow path directing the pumping fluid to the annular cavity, the lubrication flow path extending through the body of the housing and the body of the seal cartridge to guide the flow of the pumping fluid internally to the annular cavity;
• and
• an adjustable valve in the lubrication flow path, the adjustable valve being adapted to control the flow of the pumping fluid to the packing, wherein the pumping fluid is urged through the lubrication flow path to lubricate the packing within the annular cavity.