High-pressure STOPPLE® fittings are the industry standard for pipeline isolation and hot tapping and are designed for use with STOPPLE plugging machines.

A pipeline stopple or pipe stopper is a specialized device designed to temporarily block or isolate the flow in a section of a pipeline.

International Flow has over 37+ years experience in the pipeline line stop and stopple business. Call us for a line stop and stopple quote today.

This specification covers stopple fittings in sizes 16-inch to 24-inch in ANSI Classes 150, 300 and 600. These fittings are used with T.D. Williamson or equivalent pipeline tapping and plugging equipment.

The Four-Way Type Stopple Fitting is a fundamental component in both hot tapping fittings and line stop operations. It provides the permanent, reinforced branch on the pipeline through which all …

STOPPLE Plus fittings are an alternative to conventional TDW STOPPLE fittings and are designed to ASME B31.3, B31.4 and B31.8 requirements (see chart for MAOP).

Stopple Installation Procedures Guide The document outlines the STOPPLE procedure used by T.D. Williamson, Inc. to isolate sections of live pipelines for maintenance or repairs.

The STOPPLE® Plus fitting system is the simple and safe solution to minimize leak paths and reduce operator risk.

US manufacturer of pipe products for the water and waste water industries. Products include: repair clamps, couplings, pipe restraints, dismantling joints, tapping sleeves, service saddles, sewer …

Depending upon size, STOPPLE Plus fittings can be delivered in just weeks, if not days. All STOPPLE Plus fittings are equipped with LOCK-O-RING® Plus completion plugs and have undergone …