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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 ...
This model became Peerless' staple production vehicle until 1925, when engines produced by other manufacturers were first used in Peerless models. Peerless emblem Share of the Peerless Truck and Motor Company, issued 27. February 1922 Peerless Dealer in Florida, circa 1926. During World War I, Peerless manufactured military vehicle chassis and ...
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 ...
Valves can be categorized also based on their function: Check valve or non-return valve, allows the fluid to pass in one direction only; Flow control valve, to maintain and control a variable flow rate through the valve; Poppet valve, commonly used in piston engines to regulate the fuel mixture intake and exhaust; Pressure-balanced valve
Researchers at the University of Colorado Anschutz Medical Campus received up to $46 million in a grant to help develop an innovative treatment to cure blindness.
Control valve with a solid plate operated by a handle and screw mechanism. Rotating the handle moves the plate into or out of the waterway. (See also hydrant gate) [4] Gravity tank Water storage tank for fire protection; arranged above protected area to provide flow of water by gravity when needed. Green line a garden hose. Fire grenade
Now that the sun is at the height of its 11-year cycle, the increase in solar activity has more frequently fueled "space weather" that produces the right conditions for northern lights to flourish
The evolution of college sports into a more professionalized entity may soon take another step: jersey patches. While jersey patches are still prohibited under NCAA rules, college leaders have ...