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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 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]
The number system, like Sch 40, 80, 160, were set long ago and seem a little odd. For example, Sch 20 pipe is even thinner than Sch 40, but same OD. And while these pipes are based on old steel pipe sizes, there is other pipe, like cpvc for heated water, that uses pipe sizes, inside and out, based on old copper pipe size standards instead of steel.
Grinnell employs about 750 workers, with about 125 who report to the headquarters in the Iowa city the company is named for. Menary said the company reinsures about 70 mutuals in Iowa, down from ...
A tubing hanger is a component used in the completion of oil and gas production wells. It is set in the tree or the wellhead and suspends the production tubing and/or casing. Sometimes it provides porting to allow the communication of hydraulic, electric and other downhole functions, as well as chemical injection. It also serves to seal-in the ...
An important teacher of efficient and accurate note-taking is Joseph Grinnell. The Grinnell technique has been regarded by many ornithologists as one of the best standardized methods for taking accurate fieldnotes. [2] The technique has four main parts: A field-worthy notebook where one records direct observations as they are being observed.