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Koppl in the archive
Original photographs and a period newspaper profile document Koppl’s early equipment, people, and field work.
The opening photograph shows equipment for Koppl’s first 36-inch hot tap in Torrance, California, in 1955. The job took three days.
The newspaper clipping adds a contemporary account of Leo Koppl’s shop, invention, wartime work, and move to Montebello.
A period newspaper account
Industrial Panorama described a machine that let oil, water, and gas companies add lines under pressure without interrupting flow.
The clipping records Navy valve-fitting work, experimental work for Caltech, and a 1939 move to 431 Poplar Street in Montebello.
Download the clipping1921-1926
The newspaper profile says Leo Koppl had followed the oil-well trade since 1921.
Koppl dates its company history to 1924.
Leo Koppl opens the shop that the period article identifies as the start of the manufacturing story.
1928-1939
The plant moves to Santa Fe Springs two years after the Huntington Beach shop opens.
Surviving company material lists U.S. Patent No. 2,115,992 for the hot tap machine.
Koppl begins operating at 431 Poplar Street, establishing the Montebello chapter recorded in the article.
1940s-Today
Eighteen people work across two shifts to produce valve fittings for the Navy.
Koppl completes its first 36-inch hot tap in Torrance, California. The job takes three days.
Koppl supports live-line projects through regional centers and the wider ISS family of companies.
This Koppl Company card shows the hot tap machine, the words “Safety First,” and patent information dated May 3, 1938.
A legacy still in service
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