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A jockey pump, also known as a pressure-maintenance pump, is a small pump connected to a fire suppression system near the fire pump and is intended to maintain pressure in a fire protection piping system. These pumps recover pressures lost from gradual, slow pressure declines in a system due to temperature changes, trapped air escapement, or ...
Pump curves are quite useful in the pump selection, testing, operation and maintenance. Pump performance curve is a graph of differential head against the operating flow rate. They specify performance and efficiency characteristics. Performance tests are done on the pumps to verify the claims made by the pump maker.
Peerless Motor Company factory in Cleveland, circa 1910s. Peerless Motors was established in Cleveland, Ohio, in 1900 at 43 Lisbon Street. It began manufacturing automobiles while using De Dion-Bouton engines under license from the French company. [4] Engineer Louis P. Mooers designed the first Peerless models, as well as several proprietary ...
The fire pump was reinvented in Europe during the 16th century, reportedly used in Augsburg in 1518 and Nuremberg in 1657. A book of 1655 inventions mentions a steam engine (called a fire engine) pump used to "raise a column of water 40 feet [12.2 m]", but there was no mention of whether it was portable.
Contemporary fire appliances carry a multitude of equipment and firefighting media (such as water and foam) to deal with different types of emergencies ranging from fires, rescues, vehicle extrication, floods, salvage, casualty and trauma care. The design and size of a fire appliance depends very much upon the role it is expected to perform.
Over the years, fire sprinklers have become mandatory safety equipment" [8] in some parts of North America, in certain occupancies, including, but not limited to newly constructed "hospitals, schools, hotels and other public buildings", [8] subject to the local building codes and enforcement. However, outside of the US and Canada, sprinklers ...
Variable Speed Fire Pump Controllers were invented and released with a UL Listing for fire pump service in 2003 by Master Control Systems, Inc. [1] [2] Paragraph 10.5.5 in the 2003 edition of NFPA-20 recognized Variable Speed as an accepted method for operating the fire pump. Then in the NFPA-20 2007 edition, section 10.10 was added to clarify ...
Two steam powered water pumps and an air compressor pre-1915. The "Marsh" portion of the company name came from Elon Marsh, an engineer at the company. In the 1930s they manufactured the TURBO pump. Today the largest pump they market is the 480 Vertical turbine pump. The company is considered a major pump manufacturer and key pump design developer.