The tap for a cylinder of gas under pressure is of the type comprising a body adapted to be fixed on a cylinder head (9) with a gas flow passage (10-13) provided with a valve (12) having a rod (14) slidable through a sealing bellows (17) and connected to a rod (21) of a pneumatic control piston (24) with provision of an opposing spring (28) for biasing the piston to a position for closing the valve (12). Manual means (31-32-33) are provided for axially shifting the piston (24) with an abutment in a position for closing the valve (12). The tap is particularly adapted to the transfer of gases having degrees of toxicity.
申请公布号
DE3861156(D1)
申请公布日期
1991.01.10
申请号
DE19883861156
申请日期
1988.03.15
申请人
L'AIR LIQUIDE, S.A. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE, PARIS, FR
发明人
LOISEAU, GERARD, F-78390 BOIS D'ARCY, FR;MOLOZAY, MAURICE, F-78320 LE MESNIL SAINT DENIS, FR