Fire Hose Pipe
Adams Fire Tech (Pvt) Ltd is the leading fire fighting equipment and safety equipments supplier in Pakistan. We aim to serve as “One Stop Shop” for all your safety needs. We mainly stock NAFFCO Fire Hoses and China Fire Hoses. Prices of these hoses range from PKR 15000.00 to 45,000.00. For further details Contact Us .
Fire hose pipes use a variety of natural and synthetic fabrics and elastomers in their construction. These materials allow the fire hose pipes to be stored wet without rotting and to resist the damaging effects of exposure to sunlight and chemicals. Modern fire hose pipes are lighter weight than older designs, which has reduced the physical strain on firefighters. Various devices are becoming more prevalent to remove air from the interior of fire hose pipe, commonly referred to as fire hose pipe vacuums. This makes hoses smaller and somewhat rigid, allowing more hose to be packed into the same compartment on a fire-fighting apparatus.
Suction hose is laid down on the suction side of pump (inlet) where the water passing through it is at a pressure either below or above that of the atmosphere. It is designed to resist internal and external pressure. It should have sufficient strength to withstand the pressure of external air when a vacuum has formed inside. It should also be strong enough to resist hydrant pressure. Usually, an appliance has to carry about 10 m of suction hose in either 3 m or 2.5 m length. The diameter of the hose depends on the capacity of the pump, and three standard sizes such as 75mm, 100mm, and 140mm are generally used.
Partially Embedded suction hose
Partially Embedded suction hose is usually made of a tough rubber lining embedded fully as a spiral, with tempered, galvanized steel wire. This embedding is arranged so that it provides a full waterway and a relatively smooth internal surface. The wall of the hose is prepared from several layers of canvas and rubber lining so that turns of each one lie midway between turns of the other. The complete wall is consolidated by vulcanizing.
Fully embedded (smooth bore) suction hose
Fully embedded (smooth bore) suction hose has a thick, internal rubber lining embedded fully with a spiral of wire. Suction hose should be constructed to withstand a pressure of 10.5 bar.
Delivery hose is laid down from the delivery side of the pump (outlet), and the water passing through it is always at a pressure greater than that of the atmosphere. Delivery hose is divided into two categories: percolating hose, and non-percolating hose.
Percolating hose is used mainly to fight forest fires. The seepage of water through the hose protects the hose against damage by glowing embers falling onto it or the hose being laid on hot ground.
In fire services, non-percolating hoses are generally used for delivering water. Non-percolating hose consists of a reinforced jacket made from polyester or nylon yarns. This type of hose has an inner lining of vulcanized rubber fixed to the jacket by an adhesive. The use of non-percolating hose is recommended in certain applications, as friction losses will be much less than that of percolating hoses.
Lined hose are divided into 3 types:
Type 1: Lined hose without external jacket treatment: Such hose absorbs liquid into reinforcement jacket and requires drying after use.
Type 2: Coated lined hose: This has a thin, elastic outer coating that reduces liquid absorption into the jacket and may slightly improve abrasion resistance.
Type 3: Covered lined hose: Covered lined hose has a thicker elastic cover that prevents liquid absorption but also adds substantial improvements to abrasion and heat resistance.
There are several types of hose designed specifically for the fire service. Those designed to operate under positive pressure are called discharge hoses; they include attack hose, supply hose, relay hose, forestry hose, and booster hose. Those designed to operate under negative pressure are called suction hoses.
|Attack hose is a fabric-covered, flexible fire hose pipe used to bring water from the fire pumper to the nozzle. This hose ranges in nominal inside diameter from 1.5 to 3 in (38 to 76 mm) and is designed to operate at pressures up to about 400 psi (2,760 kPa). The standard length is 50 ft (15.24 m).
|Supply and relay hoses
|Supply and relay hoses are large-diameter, fabric-covered, flexible hoses used to bring water from a distant hydrant to the fire pumper, or to relay water from one pumper to another over a long distance. These hoses range in nominal inside diameter from 3.5 to 5.0 in (89 to 127 mm). They are designed to operate at pressures up to about 300 psi (2,070 kPa) for the smaller diameters and up to 200 psi (1,380 kPa) for the larger diameters. The standard length is 100 ft (30.48 m).
|Forestry hose is a fabric-covered, flexible hose used to fight fires in grass, brush, and trees where a lightweight hose is needed to maneuver it over steep or rough terrain. Forestry hose comes in 1.0 and 1.5 in (25 and 38 mm) nominal inside diameters and is designed to operate at pressures up to about 450 psi (3,100 kPa). The standard length is 100 ft (30.48 m).
|Booster hose is a rubber-covered, thick-walled, flexible hose used to fight small fires. It retains its round cross-section when it is not under pressure and is usually carried on a reel on the fire pumper, rather than being stored flat. Booster hose comes in 0.75 and 1.0 in (19 and 25 mm) nominal inside diameters and is designed to operate at pressures up to 800 psi (5,520 kPa). The standard length is 100 ft (30.48 m).
|Suction hose, sometimes called hard-suction hose, is usually a rubber-covered, semi-rigid hose with internal, metal reinforcements. It is used to suck water out of unpressurized sources such as ponds, rivers, or swimming pools for home wildfire protection purposes.  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). The standard length is 10 ft (3.05 m).
Another suction hose, called a soft-suction hose, is a short length of fabric-covered, flexible discharge hose used to connect the fire pumper suction inlet with a pressurized hydrant. It is not a true suction hose since it cannot withstand negative pressure.