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No. 3 Branch Connection Fittings
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At the request of refinery customers, TDW has developed the new Class 150, 300 and 600 No. 3 Branch Connection Fitting, designed to meet B31.3 requirements for refinery and chemical plant applications in sizes 2- through 24-inch. These fittings can be used on standard weight and larger pipe. Three different types of flanges are available along with a full encirclement reinforcing saddle.
The No. 3 Branch Connection fitting is a saddle fitting welded directly to the pipe, eliminating the possibility of annular corrosion that exists between the fitting wall and pipe when a full encirclement fitting is used. The following are additional features.
- All three classes of the fitting are rated to 700°F at pressures from 110 to 1,040 psi.
- When desired, a full encirclement reinforcing saddle is welded around the installed fitting, providing additional support and strength.
- Both the LOCK-O-RING® and LOCK-O-RING® Plus versions accept a completion plug and blind flange, permitting removal of the tapping valve (see note).
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