DIAPHRAGM SAFETY DEVICE Russian patent published in 2003 - IPC

FIELD: pneumohydraulic devices; valves. SUBSTANCE: invention relates to devices aimed at protection of main lines and reservoirs of pneumohydraulic systems from gauge pressure or for executing pneumatic commands, for instance, for disconnecting emergency buoys. Proposed diaphragm safety device contains housing with inlet and outlet chambers divided by special member, pyrochamber and slave mechanism. Said mechanism is made in form of instant-return diaphragm hermetically secured in pyrochamber by means of insert provided with through holes. Inner surface of insert in contact with outer surface of instant-return diaphragm is made concave. Pyrochamber communicates with inlet chamber. EFFECT: simplified design. 1 dwg