Specification for electrically operated automatic gas shut-off valves fitted with throughput adjusters, proof of closure switches, closed position indicator switches or gas flow control
German title
Spezifikation fuer elektrisch betriebene automatische Gasabsperrventile die mit Durchflussreglern, Schliessmeldeschaltern, Schliessstellungsanzeigeschaltern oder Gasdurchsatzreglern bestueckt sind
Publication date
1991-09-30
Original language
English
Pages
10
Publication date
1991-09-30
Original language
English
Pages
10
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