F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
F16K27/00—Construction of housing; Use of materials therefor
F16K27/04—Construction of housing; Use of materials therefor of sliding valves
F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
F16K27/047—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating members
Dispositif de verrouillage d'une vanne d'obturation du gaz entre une canalisation d'arrivee et de depart et procede de condamnation d'une telle canalisation.