COMPRESSED-AIR CUT-OFF VALVE DEVICE FOR GAS- CYLINDER WEAPON Russian patent published in 1999 - IPC

FIELD: gas-cylinder weapon operating on use of energy of preliminarily compressed gas. SUBSTANCE: the valve device is furnished with a disk located on a tapered bottom, inside an adapter with a clearance around the edges, engageable with the valve spring, and seal of the body. The end face of the seal facing the disk has bulges. The latters are arranged radially. The use of the disk located on the tapered bottom, inside the adapter, with a clearance around the edges and engageable with the valve spring facilitates the supply of a definite portion of gas from the cylinder to the prevalve space, which ensures a stable bullet velocity and close grouping of shots. This clearance prevents solid particles and chips from penetration to the prevalve space, leaving clean the valve seal. EFFECT: enhanced stability of bullet velocity and close grouping of shots. 3 cl, 2 dwg