P/N 98087000 REV-C (ECN 120213)
Table of Contents I. SYSTEM DESCRIPTION: …………………………………………………4 II. VALVE STATUS INDICATOR: (Optional 81383001) ………………...…4 A. Reverse polarity protection….……………………………………………4 B. Electrical Specifications……………………………………...…………...4 III. INSTALLATION INSTRUCTIONS…………………………………………5 A. Valve Installation…………………………………………………………6 B. Hand-wheel Assembly……...…………………………………………….7 C. Determining Shaft Length………………………………………………..7 D. Repositioning the Handwheel …...………………………………………..8 E.
I. SYSTEM DESCRIPTION: The 2900G series gear actuated valve line includes ball valves in 1.5”, 2.0”, 2.5”, 3” and 4” sizes, also butterfly valves in 2”, 4”, 5”, and 6” sizes. A segmental gear made of aluminum bronze and a worm made of a stainless steel alloy controls the valve opening and closing. This actuator design allows easy and precise control of large flows, and provides compliance with the opening and closing time requirements of NFPA 1901.
III. INSTALLATION INSTRUCTIONS: A. Valve Installation: The 2900G ball valves sizes 1.5” through 3.0” are bi-directional and can be installed in either direction. The 2940G 4.0” valve should be installed with the arrow on the body pointing in the direction of flow except in a tank to pump application where the arrow should be pointing towards the tank. The 2950G butterfly valves are bi-directional and can be installed in either direction.
Ball Valves; 1. Place the valve in the fully closed position. Note that the slot in the end of the actuator shaft shows the position of the ball. When the slot is at a right angle to the waterway, the valve is fully closed. 2. Remove the four socket head cap screws from the gear case cover, and then pull the cover from the gear case. Rotating the cover slightly will ease removal. 3. Remove the thrust washer and gear segment from the gear case.
6. Apply Loctite #242 to the four hex head bolts then reinstall and tighten them to secure the gear case assembly to the mounting flange on the valve body. . 7. Install the gear segment in the correct position as shown in Figure 2 above. Note that rotating the worm slightly will ease gear segment installation. 8. Apply petroleum base grease to the thrust washer and install. 9. Reassemble the gear case cover on the gear case taking care not to damage the cover O-ring. 10.
D. Repositioning the Handwheel The handwheel attachment design allows the wheel to be repositioned relative to the handwheel shaft. This feature is useful if it is desired, for instance, to have the spinners of adjacent handwheels in the same position when the valves are fully closed. Holding the handwheel and/or the swivel, loosen the jam nut in the center of the handwheel hub (9/16” socket). Pull the handwheel loose from the shaft and rotate the handwheel to the desired position.
