Abstract: A normally open, two position, ultra-high-pressure three-way valve is comprised of a centrally internally situated short cylindrical spool conically profiled at each end, each end in close proximity to an orifice seat, each seat in fluid communication with an outlet port. Inlet flow through the body and into the interior chamber containing said short cylindrical profiled spool situated between fixed orifice seats can thus be directed through one open orifice seat and through its adjoining port to a downstream destination while the other seat is blocked; or upon shifting, through the other orifice seat and adjoining port to an alternate downstream destination while the first seat is blocked. The actuating stem, an integral part of the aforementioned short tapered cylindrical spool, extending concentrically through the orifice of the sealing seat on the stem end of the short cylindrical member, extends out through the body to external actuation means.

Abstract: A normally closed, two-way ultra-high-pressure valve is comprised of a stem protruding beyond the outer surface of a valve body and extending inwardly toward and coaxially through a stationary seat therein, which separates the high-pressure inlet fluid from the low pressure outlet port, the stem beyond the seat enlarging to a diameter significantly greater than the through-hole. The conical surface is forced back against the hole in the seat by inlet fluid pressure creating the valve seal. External force exerted on the aforementioned protruding stem at the opposite end of the body separates the conical surface away from the seat thus opening the valve.

Abstract: A valve connected into an ultra-high-pressure fluid circuit (20,000 to 60,000 psi) which, when the system pressure is exceeded to some preset level, vents the pumped fluid to atmosphere while reducing and maintaining a system pressure on the order of five percent (5%) of the original system value. Upon shutting down the system and restarting, system pressure will be restored.