T.D. Williamson - Scraper Passage Indicator

Carbon Steel

Scraper Passage Indicator

TDW’s PIG-SIG V Scraper Passage Indicator
is a device installed at prescribed intervals on pipelines to detect the passage of a scraper or sphere. This unique product functions by extending an omnidirectional trigger into the pipeline through a welded fitting: the trigger is tripped by the passage of a scraper/sphere.

The TDW PIG-SIG V Scraper Passage Indicator
is easy to install, compatible with all standard THREAD-O-RING nipples, as well as flanged fittings, and all but eliminates trigger breakage.

Signaling systems available with the PIG-SIG V device include a flag indicator, an electrical indicator or a flag/electrical indicator. It is compatible with all standard THREAD-O-RING nipples previously sold by TDW and are interchangeable. This makes it possible to order the PIG-SIG V unit as an upgrade conversion kit without nipple, or as a new installation kit complete with nipple.

The PIG-SIG V device can also be provided in a flange-mounted configuration per the required pipeline pressure class (up to 2500 lb.).