NIBCO Rubber-Seated Butterfly Valves - Manual (Page 4)

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INSTALLATION
1. Install handwheel (1) onto gear operator shaft and secure with pin (2). (If not already
attached) See Figure 1.
2. Turn the handwheel (1) clockwise until in full SHUT position.
3. Remove 2 screws holding pointer cover plate to center of gear operator to expose bore.
Retain pointer cover plate and screws for reinstallation later.
4. Assure valve is in full SHUT position, turn valve stem (5) to close disc if necessary.
5. Assure both mounting base of gear operator (3) and valve top flange (6) are clean and
dry.
6. Determine desired handwheel position in reference to the piping system and compare
with Fig. 2. There are 2 mounting positions for the gear operator onto the valve and the
valve can be mounted in either direction into the piping system. This will allow
handwheel to be positioned in any of the 4 quadrants as shown in Fig. 2. Note that all
Fire Protection and 10” and 12” size commercial valves only allow for handwheel
positioning in quadrants 1 and 2.
7a. Gear operators with adapter bushing:
 Insert adapter bushing (4) into gear operator (3) bore aligning bushing key with
desired keyway. Keyway selection will determine handwheel orientation position.
(Note that Fire Protection model adapter bushings differ from illustration and only
have 1 keyway position).
 Align adapter bushing (4) bore with valve stem (5) and slide gear operator assembly
onto valve stem (5) until seated with valve top flange.