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� � <br />� �. The Wet Chemieal Systeml- � <br />D-29 <br />Mechanical Gas Valves <br />Mechanical (spring loaded) gas valves can be closed upon <br />system actuation by using eilher a t/16" diameter cable <br />attached to the predrilled hole on the discharge lever of the <br />mechanical control box (seA example t) or a t/16" diameter <br />cable attached to a pneumatic release installed on a 12" riser, <br />anywhere on the discharge pipe iine (see example 2). The <br />maximum actuation cable length is 50 feet, with a maximum of <br />25 comer pulleys. <br />■ Example 1 <br />U.L EX 2458 <br />9� Example 2 <br />vertuw�nc a�se <br />NOUNTEO HOHQONTALLY� <br />1A' PIPE NIPPLE <br />pEOUCING <br />COUPLING <br />12' A%. <br />B6 R ve�, yr, w� <br />NPE NIPPLE <br />CNIYP <br />2'.IS•JUNCTIaEI <br />BOX•SUPPLE➢ <br />BY OiHFAS <br />YECH�NCAL <br />G0.5 VAL'16 <br />�' X i' <br />�uNcnoNeox• <br />SUPPL'E➢ BY <br />oTx�zs <br />caatee�acx <br />flrYi ti <br />CONOUR <br />LP <br />07998. 1990 Fggie Intamadonal. Inc., M rights �aservad. (11/94) <br />