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SECTION III — SYSTEM COMPONENTS UL EX. 3470 ULC CEx747 Page 3 -8 REV. 6 3 -1 -04 PULLEY TEE MECHANICAL GAS VALVES The Pulley Tee (Part No. 427929) is used to change the direction The mechanical gas valves are designed to shut off the flow of gas of two wire ropes by 90 °. It must be used in areas where the tem- to the appliances upon actuation of the regulated release assem- peratures are within the range of 32 °F to 130 °F (0 °C to 54 °C). bly. The valves are available in sizes of 3/4 in., 1 in., 1 1/4 in., 1 1/2 Pulley tees can be used in mechanical gas valve actuation lines in., and 2 in. Ansul style; and 2 1/2 in. and 3 in. Asco style. The and remote manual pull station lines. Pulley tees cannot be used valves are rated for natural and LP gas. Both styles are UL Listed within a detection line. , and includes the air cylinder, tubing, and fittings for connection to the release mechanism. I� l r Maximum I�I © ®�II�I Part Operating No. Description Pressure 55598 3/4 in. Gas Valve (ANSUL) 10 psi (.69 bar) 1111 55601 1 in. Gas Valve (ANSUL) 10 psi (.69 bar) 55604 1 1/4 in. Gas Valve (ANSUL) 10 psi (.69 bar) FIGURE 23 55607 1 1/2 in. Gas Valve (ANSUL) 10 psi (.69 bar) 000447 55610 2 in. Gas Valve (ANSUL) 10 psi (.69 bar) STAINLESS STEEL CABLE 25937 2 1/2 in. Gas Valve (ASCO) 5 psi (.35 bar) 25938 3 in. Gas Valve (ASCO) 5 psi (35 bar The 1/16 in. stainless steel cable is run from the terminal detector, through conduit, all series detectors and pulley elbows, and into A B C the regulated release mechanism trip lever. When any fusible link Valve Size in. (mm) in. (mm) in. (mm) separates, the tension on the cable is relaxed, and the trip lever 3/4 in. 3 3/4 (95.3) 6 3/8 (161.9) 5 1/2 (139.7) actuates the regulated release mechanism. The cable can also be 1 in. 3 3/4 (95.3) 6 3/8 (161.9) 5 1/2 (139.7) used for mechanical gas valves and remote manual pull stations. 1 1/4 in. 4 7/8 (123.8) 7 3/8 (187.3) 6 3/8 (161.9) The cable is available in 50 ft. (15 m) (Part No. 15821) and 500 ft. 1 1/2 in. 4 7/8 (123.8) 7 3/8 (187.3) 6 3/8 (161.9) (152.4 m) (Part No. 79653) lengths. 2 in. 5 7/8 (149.2) 7 7/8 (200.0) 6 11/16 (169.9) 2 1/2 in. 7 13/16 (198.4) 9 1/16 (230.2) REMOTE MANUAL PULL STATION 3 in. 7 25/32 (197.6) 9 1/16 (230.2) The remote manual pull station (Part No. 4835 or Part No. 54011) 1.......51 is required for manual actuation of the regulated release assembly. t The remote manual pull station should be mounted at a point of IIII egress and positioned at a height determined by the authority I. having jurisdiction. Trim rings, Part No. 427074 (pack of 10), are c AIL available. i • PART NO. 4835 (WITHOUT CABLE) PART NO. 54011 (WITH 50 FT. OF CABLE) • mo t ► • MI P U B 1 4-- A -- I II �� I � 3/4 IN. THRU 2IN. 21f2 IN. THRU 3 IN. L � , � V ) . . 004206 004209 FIGURE 25 METAL STAMPED 000163 FIGURE 24