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Grinnell grooved products include grooved couplings, grooved fittings, mechanical tees, valves, circuit balancing valves, copper systems, stainless steel systems, plain end systems, HDPE systems, PVC systems, G-PRESS systems, gaskets and spare parts, and preparation equipment, as well as accessories, such as strainers, tee strainers, suction diffusers, dielectric waterway transition fittings ...
Grinnell improved Parmalee's first practical automatic sprinkler and patented his own Grinnell sprinkler in 1882. [5] Continual improvements resulted in the glass disc sprinkler in 1890. With slight modifications, this sprinkler head is still used in modern fire sprinkler systems ; sprinklers are even called le Grinnells in France. [ 6 ]
The clevis is a U-shaped piece that has holes at the end of the prongs to accept the clevis pin. The clevis pin is similar to a bolt, but is either partially threaded or unthreaded with a cross-hole for a split pin. A tang is a piece that is sometimes fitted in the space within the clevis and is held in place by the clevis pin.
The company was founded ca. 1815 as Fish, Grinnell & Co. (the senior partner of which had the memorable, if improbable, name of Preserved Fish (1766–1846)); the Grinnell was his cousin Joseph Grinnell, one of six sons of a shipper and merchant in New Bedford, Massachusetts.
In 2001, Grinnell Fire Protection was merged with the Simplex Time Recorder Company to form SimplexGrinnell, which is the largest fire protection company in the world. ITT Grinnell supporting products are still sold today by Anvil International in the US and PSS in Germany. Grinnell was a director of several banks and manufacturing companies.
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Simpson manufactured joist hangers and the company's subsidiary Simpson Strong-Tie Co. Inc. became a dominant producer of structural connectors in North America and Europe. [1] The company subsequently moved to Pleasanton and went public in 1994. [1] [2]
The company adopted the “Grinnell Mutual” and “Grinnell Re" brands in 2017. In 2014, Grinnell Mutual was one of first six companies investing in the Global Insurance Accelerator, [5] [6] the first startup accelerator for insurtech. In response to the COVID-19 pandemic, Grinnell Mutual announced the Trust in Tomorrow Premium Payback. [7]