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<br /> <br />Mechanical Gas Valve <br /> <br /> <br />Mechanical Gas Valves <br /> <br />Mechanical (spring loaded) gas valves can be closed upon <br />system actuation by using either a 1/16- (.2 ern) diameter cable <br />anached to the predrilled hole on the discharge lever of the <br />Mechanical Control Box (see example 1) or a 1116- (.2 an) <br />diameter cable attached to a pneumatic release installed on a <br />12- (30.5 em) riser, anywhere on the discharge pipe line (see <br />example 2). The maximum lICtUation cable length is 50 feet <br />(15.2 m), with . maximum of 25 comer pulleys if a mechanical <br />control box is UHCI or 16 comer pulleys if an A+ control box is <br />used to actuate the gas valve. <br /> <br />. Example 2 <br />PNEUIIAlIC REL!ASE <br />IDIII'ED HORIZON1'AU.Y <br /> <br /> <br />..- <br />1 <br /> <br />,.. JlIIE NI'PLE <br />(.I ClIlI <br />t= <br />12" MAX <br />NIB <br />(as CIII/ <br />! <br /> <br /> <br />..... <br />(10__10_1 <br />JUNCTICIN BOX <br />........-0 BY <br />cmtBlS) <br />~ILOCIC <br />.&, <br />1--'CU anJ <br />t <br />lDIUT <br />~kOl'l <br />VI" lilT (1.1e.! <br />CONaUIT <br /> <br />. Example 1 <br /> <br />CMIP "" <br />CONNECTOR <br /> <br />Z" X C. JUNCTION <br />(I an X 1D ml <br />lOX. SUPPUED <br />BY 011IEM <br /> <br />wc- (1.1 CIII) <br />PI JAIl <br />NUT <br /> <br />FIGURE 55d <br /> <br />FIGURE SId <br />