Apparatus for generating a high-speed pulsed fluid jet

An apparatus for converting continuous fluid flow to intermittent fluid flow, the apparatus comprising:

• a valve cylinder having a cylindrical cavity, a piston slidably and sealably mounted within said cavity, an energy storage device urging said piston in a first direction, a plunger having a cylindrical internal chamber, said plunger having a first end portion fixed with respect to said piston and a second end portion opposite said first end portion, an end plug sealably mounted with respect to said second end portion, said end plug having a plug bore;
• a fluid cylinder having a valve chamber in communication with a pressurized fluid source;
• a valve stem slidably mounted within said internal chamber, said plug bore and said valve chamber, said valve stem having a shoulder positioned within said internal chamber;
• a valve poppet attached to said valve stem opposite said shoulder;
• an outlet plug sealably mounted with respect to said fluid cylinder, said outlet plug having a discharge passage with one end exposed to said valve chamber and an opposite end exposed to an exterior of said outlet plug;
• and
• a spring mounted between said plunger end plug and said valve poppet.