T.D.Williamson - Hot Tap and STOPPLE® Fittings

THREAD-O-RING™ Flanged Fittings

THREAD-O-RING™ Flanged Fittings are used with TDW Tapping Machines as purge and equalization fittings.

THREAD-O-RING™ Fittings

THREAD-O-RING™ Fittings (T-O-R) are used with TDW STOPPLE® Plugging Machines as purge and equalization fittings.

Hot Tapping Fitting

Tapping fittings are full-branch split tees designed for use when connecting branch lines.

STOPPLE® Fitting with LOCK-O-RING® Flange and Plug

STOPPLE® Fittings are full-branch split tees designed for use with the TDW STOPPLE® plugging system.


LOCK-O-RING® Plug with Scarfed Nipple

LOCK-O-RING® Flanges and Plugs are used as a means of recovering tapping valves after a STOPPLE® Plugging Machine operation. They are used in new construction to permit future expansion of a pipeline or a piping system.