Installation Instructions
WTR Installation & Maintenance Manual 330-15000 • Revision A • August
4.4 Installing WTR-3 through 150
CAUTION: If your actuator is already mounted to a valve from the manufacturer, verify
that the actuator is mounted according to the following instructions. Failure to follow
the installation procedures could result in personal injury or improper operation and
could damage the equipment.
Install actuator as follows:
NOTE: Piece numbers correspond to piece numbers listed in Figure 6.1.
1. Place valve in MID-TRAVEL position.
2. Install the Splined Adapter (piece #24) on the valve shaft and insert the Key to secure the
Splined Adapter. If the Splined Adapter has been factory-machined, insert and tighten the
Setscrew into the Splined Adapter tapped hole to secure it to the valve stem.
3. Remove Pointer Cap (piece #5) to view the Worm Gear (Drive Sleeve - piece #4) and the
Splined Adapter while mounting onto the valve flange and setting Mechanical Stop
Screws (piece #13) and Jam Nut (piece #14).
4. Adjust the WTR Worm Gear to approximate MID-TRAVEL position. Figure 4.2 shows
gear in closed position.
5. Align and mount the WTR on the installed Splined Adapter. Once the unit is properly
aligned on the valve Mounting Flange, secure the unit with the required number of
mounting bolts. High strength (minimum SAE-Grade 5) hex head or socket head cap
screws with lockwashers are recommended. The quantity and thread size of the actuator
mounting taps are listed in Table 4.2.
Table 4.2 – WTR mounting base tap sizes (3 through 150)
Commercial AWWA Tap size and quantity Standard Flange
Unit size/SGA Unit size/SGA MSS ISO MSS ISO
WTRC-3 N/A N/A (4) M8-1.25 x 12 deep N/A F07
70.00 B.C.
WTRC-5 N/A (4) 3/8-16 x .56 deep (4) M10-1.50 x 15 deep FA10 F10
4.000 B.C. 102.00 B.C.
WTRC-10 WTRA-12 (4) 1/2-13 x .750 deep (4) M12-1.75 x 18 deep FA12 F12
4.950 B.C. 125.00 B.C.
WTRC-15 WTRA-21 (4) 5/8-11 x .9 deep (4) M16-2 x 25 deep FA14 F14
WTRC-15/S1.7 WTRA-21/S1.7 5.500 B.C. 140.00 B.C.
WTRC-28 WTRA-36 (4) 3/4-10 x 1.12 deep (4) M20-2.5 x 30 deep FA16 F16
WTRC-28/S3.0 WTRA-36/S3.0 6.500 B.C. 165.00 B.C.
WTRC-40 WTRA-48 (8) 5/8-11 x .9 deep (4) M20-2.5 x 24 deep FA19 F16
WTRC-40/S3.7 WTRA-48/S3.7 7.500 B.C. 165.00 B.C.
WTRC-60 WTRA-72 (8) 5/8-11 x .9 deep (8) M16-2 x 24 deep FA25 F25
WTRC-60/S4.6 WTRA-72/S4.6 10.00 B.C. 254.00 B.C.
WTRC-150 WTRA-130 (8) 3/4-10 x 1.1 deep (8) M20-2.5 x 32 deep FA30 F30
WTRC-150/S8.3 WTRA-130/S8.3 11.750 B.C. 298.00 B.C.
4-4
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