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5-inch (13 cm) flex suction hose with Storz fittings, mounted on an engine. Flexible suction hose (Flex suction or suction hose), not to be confused with hard suction hose in U.S., is a specific type of fire hose used in drafting operations, when a fire engine uses a vacuum to draw water from a portable water tank, pool, or other static water source.
Hard suction hose A flexible rubber hose reinforced with a steel core to prevent collapse from atmospheric pressure when drafting; connected between the intake of a fire pump and a water supply and must be used when drafting. Also called hard hose, hard sleeve, or hard intake/suction hose. [5] Helmet
[14] Hard-suction hose comprises multiple layers of rubber and woven fabric encapsulating an internal helix of steel wire. Some very flexible hard-suction hoses use a thin, polyvinyl chloride cover with a polyvinyl chloride plastic helix. Suction hose ranges in nominal inside diameter from 2.5 to 6.0 in (64 to 152 mm).
Depending on application, fire department pumps lift water 6 to 10 metres (20 to 33 ft). Medium diameter hard suction hose, with attached strainer, for use with wildland firefighting apparatus. To reduce drafting friction and obtain a larger flow or higher lift, a larger cross-section of suction hose is employed.
It is said to be the first suction engine. [25] Some models had the hard, suction hose fixed to the intake and curled up over the apparatus known as a squirrel tail engine. Fire engine, Philadelphia, 1838, trying to save adjacent building. One firefighter (with helmet) directs the water; three to his left are manning the pump. Hand-colored.
Philadelphia fire engine manufacturers Sellers and Pennock model the Hydraulion is said to be the first suction engine produced in 1822. [4] Some models had the hard, suction hose fixed to the intake and curled up over the apparatus known as a squirrel tail engine.
1-inch hose with 1-8 NH NFPA threads (NFPA 1963 requirement; a.k.a. "Chemical Hose Thread" and "Booster Hose Thread" [7]; the chemical hose thread term likely originates from its use on chemical fire engines, an early firefighting device used from 1872 until the 1930s that used a combination of bicarbonate of soda and sulfuric acid to force ...
The firefighters start out in street clothes and dress in full turnout gear (Helmet, Coat, and boots) board their fire engine and respond approximately 200 feet up the course to a portable water tank, the engine crew simultaneously stretches 100–150 feet of 2 + 1 ⁄ 2-inch hose toward a target area as other crew members place hard suction ...