Limitorque WTR Series - Table 4.1 - Splined Adapter Custom Bore and Keyway Sizes

WTR Series
Installation Instructions
WTR Installation & Maintenance Manual 330-15000 • Revision A • August
2. If the Splined Adapter has been bored and keyed by Limitorque, verify dimensions to
ensure proper compatibility with the valve stem.
NOTE: If Splined Adapter is not factory-machined, the customer assumes responsibility
for securing the adapter to the valve stem so it will not disengage from the shaft.
3. If the Splined Adapter has not been bored and keyed by Limitorque, it is provided solid or
with a minimum pilot bore. Custom bore and key to the maximum permissible sizes as
listed in Table 4.1.
Table 4.1 – Splined Adapter custom bore and keyway sizes
Commercial AWWA Key size in max bore Key size in max bore
Unit size Unit size Max bore (in) Rect. key Sq. key Max bore (mm) Metric key
WTRC-3 N/A 1.25 1/4 x 3/16 0.250 28 8 x 7
WTRC-5 N/A 1.50 3/8 x 1/4 5/16 38 10 x 8
WTRC-10 WTRA-12 2.25 1/2 x 3/8 3/8 58 16 x 10
WTRC-15 WTRA-21 2.75 3/4 x 1/2 5/8 70 20 x 12
WTRC-28 WTRA-36 3.25 7/8 x 5/8 3/4 82 22 x 14
WTRC-40 WTRA-48 3.75 7/8 x 5/8 3/4 96 28 x 16
WTRC-60 WTRA-72 4.00 1 x 3/4 7/8 102 28 x 16
WTRC-150 WTRA-130 5.00 1-1/4 x 7/8 1 127 32 x 18
Drive sleeve 1 pc 2 pc 1 pc 2 pc 1 pc 2 pc 1 pc 2 pc 1 pc 2 pc
WTRC-430 WTRA-430 5.50 4.438 1.25 x 0.875 1 x 0.75 1.25 1.0 140 N/A 36 x 20 N/A
WTRC-450 WTRA-450 6.00 4.50 1.5 x 1 1.00 x 0.75 1.50 1.0 152 N/A 40 x 22 N/A
WTRC-500 WTRA-500 7.00 5.938 1.75 x 1.50 1.50 x 1.00 1.75 1.25 178 N/A 45 x 25 N/A
WTRC-575 WTRA-575 8.00 6.50 2.00 x 1.50 1.50 x 1.00 1.75 1.5 203 N/A 50 x 28 N/A
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