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SECTION III - SYSTEM COMPONENTS UL EX. 3470 ULC CEx747 Page 3-8 REV. 6 30-1-04 PULLEY TEE The Pulley Tee (Part No. 427929) is used to change the direction of two wire rapes by 900. It must be used in areas where the tem- peratures are within the range of 32 of to 130 of (0 oC to 54 oc). Pulley tees can be used in mechanical gas valve actuation lines and remote manual pull station lines. Pulley tees cannot be used within a detection line. FIGURE 23 lJOCW.47 STAINLESS STEEL CABLE The 1/16 in. stainless steel cable is run from the terminal detector, through conduit, all series detectors and pulley elbows, and into the regulated release mechanism trip lever. When any fusible link separates, the tension on the cable is relaxed, and the trip lever actuates the regulated release mechanism. The cable can also be used for mechanical gas valves and remote manual pull stations. The cable is available in 50 ft. (15 m) (Part No. 15821) and 500 ft. (152.4 m) (Part No. 79653) lengths. REMOTE MANUAL PULL STATION The remote manual pull station (Part No. 4835 or Part No. 54011) is required for manual actuation of the regulated release assem- bly. The remote manual pull station should be mounted at a point of egress and positioned at a height determined by the authority having jurisdiction. Trim rings, Part No. 427074 (pack of 10), are available. PART NO. 4835 (WITHOUT CABLE) PART NO. 54011 (WITH 50 FT. OF CABLE) METAL STAMPED 000163 FIGURE 24 MECHANICAL GAS VALVES The mechanical gas valves are designed to shut off the flow of gas to the appliances upon actuation of the regulated release assem- bly. The valves are available in sizes of 3/4 in., 1 in., 1 1/4 in., 1 1/2 in., and 2 in. Ansul style; and 21/2 in. and 3 in. Asco style. The valves are rated for natural and LP gas. Both styles are UL Listed .. and includes the air cylinder, tubing, and fittings for connection to the release mechanism. Maximum Part Operating No. Description Pressure - 55598 3/4 in. Gas Valve (ANSUL) 10 psi (.69 bar) 55601 1 in. Gas Valve (ANSUL) 10 psi (.69 bar) 55604 1 1/4 in. Gas Valve (ANSUL) 10 psi (.69 bar) 55607 1 1/2 in. Gas Valve (ANSUL) 10 psi (.69 bar) 55610 2 in. Gas Valve (ANSUL) 10 psi (.69 bar) 25937 21/2 in. Gas Valve (ASCO) 5 psi (.35 bar) 25938 3 in. Gas Valve (ASCO) 5 psi (.35 bar A B C Valve Size in. (mm) in. (mm) in. (mm) 3/4 in. 33/4 (95.3) 63/8 (161.9) 51/2 (139.7) 1 in. 33/4 (95.3) 63/8 (161.9) 51/2 (139.7) 1 1/4 in. 47/8 (123.8) 73/8 (187.3) 63/8 (161.9) 1 1/2 in. 47/8 (123.8) 73/8 (187.3) 63/8 (161.9) 2 in. 57/8 (149.2) 77/8 (200.0) 6 11/16 (169.9) 2 1/2 in. 713/16 (198.4) 91/16 (230.2) 3 in. 7 25/32 (197.6) 9 1/16 (230.2) c ~A=i 314 IN. THRU 2 IN. 2 112 IN. THRU 3 IN. 004200 004209 .. FIGURE 25