FIELD: gas supply systems. SUBSTANCE: invention relates to household appliances and industrial gas sets and it is designed to protect gas supply systems in emergency, for instance, by shutting off supply of gas in case of fire. Proposed valve contains seat in form flat plate with ring sealing surface made from side of on-coming flow, and stop member with rod loaded by spring and provided with arrangement to hold it open. Seat hub connected by spokes with plate. Hub is furnished with cylindrical guide for stop member rod. Spring of stop member is fitted around guide and it thrusts against hub. Arrangement for holding stop member in open position is made in form of lock engaging with stop member rod, lock being fixed by heat sensitive element arranged in through channel of one of spokes and plugged from outer side. Said valve has no body and it can be secured directly in pipeline and clamped between pipeline flanges. EFFECT: reduced production expenses, facilitated mounting of thermally stopping valve in operating pipeline. 2 dwg
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RU2289747C1 |
