FIELD: machine building.
SUBSTANCE: device includes an inversely bent membrane and a cutting element with an annular cutting edge. The cutting element represents a piston with O-rings and structural grooves. Device is equipped with a hollow cutting element lying opposite to the piston and located coaxially to the membrane. The cutting edge of the tool is made in the form of asymmetrically located teeth and adjoins the membrane.
EFFECT: providing reliable operation of the valve owing to ensuring complete and uniform cutting of the membrane at low puff energy.
2 dwg
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