Although the lengths and diameters of suction hose vary with the emergency fire vehicle on which it is carried, the construction is substantially the same in every case. pressure source, such as a hydrant, which protects the source from oversupplying both manufactured by Niedner Fire Hose Company, and USDA Forest Service Specification 184 semirigid rubber-braided wire-reinforced suction Threaded hose couplings are used in the United States and Canada. In practice, it is found that bursts almost invariably appear at the two opposite points on the hose where it has been flattened. When filled The extruded tubing is an ozone- and age-resistant EPDM extruded elastomer. This is referred to as the 'short length burst pressure' and may be as high as around 40 bars depending on the type and quality of the hose. For rural fires, small layflat hoses and rubber hose lines PERFORMANCE TESTING DRAFTEX is a little less expensive than semirigid rubber-braided, wire-reinforced draft hose. See table 1 for hose diameter and commercially available hose lengths. Approximate English to Metric System Highly flexible and offering superior crush resistance thanks to its reinforced PVC spiral walled construction Delta Suction Hose is suited to a wide range of temperatures and will maintain excellent vacuum performance at all times. Table 1Semirigid rubber-braided, wire-reinforced suction hose sizes and weights. There are NO plastic integral components in this high pressure soft and hard suction draft hose. These hoses range in nominal inside diameter from 51 mm to 66 to 77 mm. The CFS is in the process of moving to a national standard of coupling, with 38 mm (1") which are fitted with Forestry Couplings, formerly called Wajax couplings. 600 psig. REELTEX consists of a lightweight woven fabric of spun polyester warp yarns. Featuring aircraft aluminum # 6061-T couplings that are hard coated to Military spec Type III specification for added abrasion resistance and long service life. Delivery hose is divided into two sub-categories: percolating hose, and non-percolating hose. The tough carbonate side walls insulate and protect your water supply. It is an essential part of the equipment of every pumping emergency fire vehicle. hoses may be found. Delta Suction Hose assemblies are designed for drawing water from dry hydrants, portable water tanks, swimming pools, ponds, lakes, rivers and any other non-pressurised water sources.. table 4. as semirigid construction. Suction hose ranges in nominal inside diameter from 2.5 to 6.0 in (64 to 152 mm). REELTEX as a hardline hose for a w-in and 1-in reel hose application. It consists of a natural or synthetic rubberized jacket with wire reinforcement capable of holding a vacuum of 25 in of mercury orange, or dark blue. Acids, oils, grease and petrol: Some types of fire hose are liable to damage by contact with acid, oil, grease, petrol, etc., and hose should be stored well away from these substances. although on smaller appliances 38 mm hard suction The manufacturer claims this increases resistance to oil and The standard length is 20 meters. Oasis 1-Quart Flask canteens have been used by fire service personnel for years. often dependant on the brigades requirements. The strongest comments, provided during a field evaluation of the various constructions of draft hoses, focused on the reduction in weight provided by DRAFTEX and REELTEX. All draft hose rubber or plastic components were evenly, fully formed; uniformly thick; and circular throughout. An initial evaluation of this new lightweight hose by field personnel generated concern regarding durability and abrasion resistance compared The nozzle discharge rating shall be expressed as a rated discharge at a rated pressure [e.g., 60 gpm at 100 psi. REELTEX is more expensive than semirigid rubber-braided, wire-reinforced and DRAFTEX when labor to recouple and the cost of additional couplings is included. These hoses range in diameter from 3.5 to 5.0 in (89 to 127 mm). Unlimited stretch would tend to weaken and burst the hose. Each of these countries uses a different kind of threading. to the United States Department of Agriculture (USDA) Forest Service specification and procured through the General Services Administration (GSA) PROCUREMENT INFORMATION Mechanical Engineer. Hard suction hoses Photographs on this page taken by Ashley Hosking, CFS Promotions Unit, Hint: Always use the full name (eg: Mount, not Mt), Creative Commons Attribution-ShareAlike 4.0 International License. If you want to get a quote for a specific product, fill in the following fields, Address: Maskavas street 156,Riga, Latvia, LV-1003. Lois P. Sicking, With inner water-resistant and latex covered loom; With double polymer cover for working pressure of 30 atmospheres. Other sizes of layflat carried by appliances are 38mm (1 "), with SAMFS couplings and 25mm Recoupling is time consuming and impractical, as the field does not have easy access to a manual expander or the preferred hydraulic SEMIRIGID RUBBER-BRAIDED WIRE-REINFORCED SUCTION HOSE or wire-reinforcement did not protrude through the outer or inner surfaces but was completely embedded in the rubber or plastic material. Even so, this is an introductory article and does not comprehensively cover all the different fire hoses in use today. Great care should be taken of rubber-lined hose, especially when cooling down after large fires, as it may have been stretched over debris. Table 5 Draft hose cost comparison table. Hard suction used primarily to draft water from an open water source. Wildland and Structure 2022 Clothing and Gear Sale Catalog, Reinforced spiral wire over a smooth bore inner liner, Abrasion resistant tough black outer cover, Priced per foot (UNCOUPLED). Shock may also arise when water is allowed to flow too rapidly into a line of hose which is badly kinked; the sudden straightening out of hose under pressure and the ensuing rush of water which flows only to be checked by the next kink set up a series of pressure waves which may lead to a burst at a weak point. The internal surface should be as smooth as possible to reduce to a minimum loss of pressure through friction. This will minimise the possibility of the coupling edge cutting into the hose and, in the case of lined hose, the lining becoming separated from the jacket due to strain. vehicles, some specialist rescues and hazmat vehicle) have at least one rubber At the same time, suction-discharge hoses must be hard enough to operate at pressures up to 5 atmospheres. Any increase in the length or diameter of hose when under pressure indicates that the materials are stretching. With a building fire, large layflat is used to provide a volume of water quickly, and large hard suction hoses can be used for flooding incidents, and refilling of appliances from water sources. Care should also be taken when working at oil installations and industrial undertakings to ensure that, as far as possible, hose has minimal contact with oils and the like. This type of hoses consists of multiple layers of rubber and woven fabric encapsulating an internal helix of steel wire. Similarly, a burst may also occur if a hand-controlled branch is shut off suddenly, or a line is charged too rapidly after a temporary shutdown. Draft hose technology now includes a lighter construction with comparable performance, capable of holding a vacuum of 25 in of mercury with water, these hoses take on the familiar round shape. Our managers are ready to assist you in making the right choice of the product and in providing any technical consultation. USDA Forest Service semirigid rubber-braided, wire-reinforced draft hose is available in 8- and 10-ft lengths in the GSA catalog as National Stock Number 4210-00-889-1775. The use of trade, firm, or corporation names is for the information and convenience of the reader. With Rocker Lug or 3M Scotchlite Reflective Material is designed for enhancing visibility in low light and nighttime conditions. The standard length is 10 ft (3.05 m). Booster hose comes in 0.75 and 1.0 in (19 and 25 mm) diameters and is designed to operate at pressures up to 800 psi (5,520 kPa). lengths. Similarly, a burst may also occur if a hand-controlled branch is shut off suddenly, or a line is charged too rapidly after a temporary shutdown. The standard length of the suction fire hose is 4 m. Suction-discharge hoses are similar to suction hoses but they are less hard and rigid, more flexible and freely movable. Consequently, it is recommended for use by the field in drafting operations. FM abrasion Discharge horses are designed to operate under exposure of high pressure when water or foam is brought from the fire pumper to the source of fire. REELTEX is only available in lengths of 50 ft, necessitating recoupling for use in drafting operations of 8- or 10-ft The manufacturer claims that an encapsulation treatment called DRAFTKOTE is abrasion-resistant and increases resistance In this article we are going to outline some general categories of fire hoses as well as some specific examples. Depending on the functionality, these types of fire hoses are available: Suction fire hoses are used to suck water out of unpressurized sources, such as ponds or rivers, by means of a vacuum and transporting this water to the place of fire. DRAFTEX WOVEN FABRIC SUCTION HOSE A tough plastic outer cover gives additional protection to the jacket and prolongs the life of the hose. It is available in lengths of up to 20 ft in red, as a "filler length" - and is simply a shorter length of 64 mm layflat hose, often around 8 metres long. The correct method of clearing water by under-running is to raise the hose shoulder-high while avoiding kinks, which will trap the water. All metal roller bearings in the female swivels assure a long service life. Folding Long Handle Female swivels are available and allow for ease of storing. This type of suction FEATURES OF NORTH AMERICAN HARD SUCTION HOSE, Click Here to See: Expansion Ring Couplings. As bricks and stone retain heat for a long time, the outer covering is liable to scorch, weakening it and shortening its life. After use, a fire hose is usually hung to dry, because standing water that remains in a hose for a long time can deteriorate the material and render it unreliable or unusable. REELTEX WOVEN FABRIC SUCTION HOSE Hose should always be treated with care and rolls of hose should never be thrown roughly to the ground even though they may be dry and in good condition. Delivery hose is the first thing many people think of when envisioning a fire hose. An evaluation The hoses are fabric covered and flexible enough. The standard length is 50 ft (15.24 m).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. This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. It is one-third the weight of semirigid rubber-braided, wire-reinforced draft hose and has more than 32 percent better abrasion resistance. A plastic helical reinforced rigid durable has an ENCAP encapsulation for abrasion resistance. required. DRAFTEX suction hose consists of a lightweight woven fabric of spun polyester warp yarns. During firefighting these pressures may be as high as 10.5 bars and shock pressures may be even higher. All suction hose in this study was capable of holding a vacuum of 25 in of mercury, without any signs of collapse or other failures. hose is designed with a helix of wire, positioned between the plies of reinforcement and completely embedded in natural or synthetic fiber. Items usually ship within 3-5 business days when in stock. rolled on the 'Bight" or from the middle. REELTEX is available in 50-ft sections only, necessitating recoupling, which is impractical in the field. Larger diameter hose can carry more water at lower pressures. INTRODUCTION Relief valve standard. Many other countries have standardized quick-action couplings, which do not have a male and female end, but connect either way. to acids, oils, chemicals, and saltwater. NFPA 1963, Standard for Fire Hose Connections Lists specifications for fire hose couplings and screw threads. The fire hoses are the compulsory element to be placed into the cabinets for indoor fire-fighting water main. FIELD EVALUATION Therefore, the typical fire station often has a high structure to accommodate the length of a hose for such preventive maintenance, known as a hose tower. Attack hose shall have a minimum design operating test pressure of 275 psi. The soft suction hose is often referred to The all-metal segment collars secure coupling to the hose section by virtue of a helix matching groove arrangement that aligns with the hose. The picture to the left shows a 64mm hose (2 1/2") with a male and female SAMFS coupling to the USDA Forest Service semirigid rubber-braided, wire-reinforced draft hose (figure 1). Draft hose is used on all engines and with all portable pumps. Performance data for semirigid rubber-braided, wire-reinforced; DRAFTEX; and REELTEX draft hose is shown in Information contained in this document has been developed for the guidance of employees of the Forest Service, United States Department of Agriculture (USDA), its contractors, and cooperating Federal and State agencies. Rawhide Fire Hose is a supplier of the most flexible high-pressure PVC intake soft and hard suction hose in the market. HardSuction Hose is used to suck water out of unpressurized sources, such a ponds or rivers, by means of a vacuum. Smaller diameter hose can carry less water and will require higher pressure. Percolating hose allows water to seep through the hose and is used mainly to fight forest fires. The fabric a draft hose in 12-in construction and as a hardline hose in w-in and 1-in construction. We ship your in-stock order the same day via UPSfree! (Not all prohibited bases apply to all programs.) We currently only ship to addresses within the United States, and APO/FPO addresses. This reinforced PVC Suction Hose is designed for extended life due to high UV inhibitors applied during the manufacturing process. Many different methods have been developed for storing hose, which may be listed as: Mildew: Synthetic materials are not affected by mildew but fungus may grow on them if damp and dirt is present. In this connection, it is advisable to examine couplings periodically and remove 'burrs' which might cause damage. Engineered to provide as much as a 24% tighter bend radius to deliver nonrigid movement. You already know a fire hose is one of the most basic, essential pieces of fire-fighting equipment. national standard coupling for 64mm layflat hoses is a Storz 65mm coupling. regarding manufacturing workmanship was also conducted. Shock: It is not generally realised that shock is a frequent cause of hose failure. Care should be taken when hose is stowed on emergency fire vehicles to avoid the possibility of hose chaffing against the locker sides due to vibration, Emergency fire vehicle locker doors should be opened at frequent intervals to allow air to circulate and condition the hose. Suction fire hose connections are manufactured with the standardized dimension ranges - 75, 100, 125 mm. No matter where you live in the world, your volunteer support is welcome. Deliberate beveled segment edges are incorporated for easy loading into hose chutes on most apparatus. Abrasion testing was held after 40,000 cycles without failure, as was noted with the DRAFTEX hose (figure 3). For further information, please contact the SDTDC fire program leader at 9095991267. Technology and Development Center publication Hardline Hose Comparison Study Tech Tip regarding an evaluation of Call for pricing or to place an order for custom length: 800-654-7049, Brush Clothing with Optional Scotchlite Triple Trim, Get Ready for the Fire with Wildland and Structure Firefighting Clothing and Gear, 30 Elbow Adapters with Relief Valve & Air Bleeder, 3M Scotchlite Triple Trim - Brush Coats, 3M Scotchlite Triple Trim - Brush Pants, CALL US: 541-779-0394 / Toll Free: 800-654-7049. The main characteristics of good firefighting hose are: It is also essential that the hose is easily repairable by simple means. ], Highly mobile - can be handled by 1 firefighter. Developed and maintained Soft sleeve transfer water from a pressurized source. Couplings and Hose are made and assembled in the U.S.A. PVC Suction Hose / Draft Hose length is measured from the end of the couplings to the end of the couplings. hose doesn't have to be unrolled ("bowled") when only a short length is The lightweight technology improves the transport of draft hose and the setup of drafting operations. on both ends of the hose. USDA is an equal opportunity provider and employer. cases a little longer. Moreover, lengthwise stretch or extension causes hose to 'snake' when under pressure. The radius of the arc was six times the inside diameter of the hose. The tough carbonate side walls insulate and protect your water supply. The surface of the material was tack free. The USDA assumes no responsibility for the interpretation or use of this information by other than its own employees.
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