The invention provides a core
pipe valve, and belongs to the field of valves. The core
pipe valve is an original brand-new-structure valve, and refers to starting and stopping, pressure starting and stopping, adjustment, safety, decompression, returning stopping,
pressure reduction, emergency
cutting-off and the like. A valve element
pipe is a fixing piece and coaxially penetrates through a sleeveI of a valve body, a valve
body cavity and a sleeve II of the valve body; an axial partition is arranged in the middle of the valve element pipe, and two adjacent sides of the partition in the axialdirection are separately at least one radial circulating hole of a pipe section I and at least one radial circulating hole of a pipe section II; an annular valve element which surrounds the partition,an annular
valve seat of at least one sleeve
throat of the sleeve I and an annular
valve seat of at least one sleeve
throat of the sleeve II form a sealing pair; the difference between the outer diameters of the pipe section I and the pipe section II is greater than or equal to 0, the pipe section I is in shaft hole type fit with the sleeve I, the pipe section II is in shaft hole type fit with the sleeve II, and at least one combined portion is provided with a seal; and under the effect of two direction
potential energy, the valve body axially moves in an axial direction relative to the valveelement pipe to implement starting and stopping and function transformation. The core pipe valve is simple in structure, convenient to manufacture, low in starting and stopping resistance and good insafety, reliability and sensitivity, and adapts to various working conditions, and the efficiency is improved.