VENT VALVE OF FLYING VEHICLE FUEL TANK Russian patent published in 2007 - IPC F16K17/168 B64D37/32 

FIELD: equipment of flying vehicle fuel systems.

SUBSTANCE: proposed vent valve has hollow body where shut-off needle with spherical shut-off member, plate-type valve and detachable plug are mounted. Shut-off needle is provided with hold-down bush connected with body by means of threaded joint; this bush has axial passage for escape of gas being vented and side passages in lower part which are brought into communicated with axial passage. Fitted in body through sealing gasket is plate-type valve having hold-down surface in lower part and tail-piece in upper part. Mounted in widened part of body is additional hold-down bush which has axial cavity with site for wrench in upper part and hole for tail-piece of plate-type valve in lower part. Vent passage is closed with detachable plug.

EFFECT: enhanced tightness of valve.

2 cl, 6 dwg