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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 ...
An early device used to squirt water onto a fire is a squirt or fire syringe. Hand squirts and hand pumps are noted before Ctesibius of Alexandria invented the first fire pump circa the 2nd century B.C., [3] and an example of a force-pump possibly used for a fire-engine is mentioned by Heron of Alexandria.
The Peerless Motor Car Company was an American automobile manufacturer that produced the Peerless brand of motorcars in Cleveland, Ohio, from 1900 to 1931. [2] One of the "Three Ps" – Packard , Peerless, and Pierce-Arrow – the company was known for building high-quality luxury automobiles.
The company's brand name was Peerless. The main building was 334 ft long and 3 stories in height, and had a 34 ft cupola. In January 1891 its total monthly payroll amounted to over 10,000 US dollars ($239500 in 2010 dollars) and employed 162 people. [2]
Piping and instrumentation diagram of pump with storage tank. Symbols according to EN ISO 10628 and EN 62424. A more complex example of a P&ID. A piping and instrumentation diagram (P&ID) is defined as follows: A diagram which shows the interconnection of process equipment and the instrumentation used to control the process.
The model 6-36, 6-48, and 6-66 continued for the next decade. [8] Starting in 1918, Pierce-Arrow adopted a four-valve per cylinder T-head inline-six engine (Dual Valve Six) and three spark plugs per cylinder, one of the few, if only, multi-valve flathead design engines ever made.
By 1938 large numbers of the Coventry trailer pumps were being purchased by fire brigades, and demonstrated to ARP staff and members of the Auxiliary Fire Service. The "Coventry Climax trailer pump" was described as being capable of delivering 250–300 imperial gallons per minute (1,100–1,400 L/min).
[4] [5] In general, however, automatic fire suppression systems fall into two categories: engineered and pre-engineered systems. [6] Engineered fire suppression systems are design specific and most commonly used for larger installations where the system is designed for a particular application. Examples include large marine and land vehicle ...