Key Hose - mdi

Single Jacket Specification Sheet


Hydrostatic Testing

Stock Lengths: Standard lengths are 50, 75 and 100 feet.
Size 1" 1 1/2" 1 3/4" 2" 2 1/2" 3"
Test Pressure 500psi 500psi 500psi 500psi 500psi 400psi
Elongation 4% 5% 6% 6% 7% 8%
Twist per foot 71° right 64° right 64° right 64° right 25° right 25° right
Warp 10" 10" 10" 10" 10" 10"
Rise 4" 3" 2" 1" 0 0
Burst Test 800psi 800psi 800psi 750psi 750psi 750psi
Kink Test 500psi 400psi 350psi 350psi 350psi 300psi

Weights and Measures
Size 1" 11/2"* 13/4"* 2"* 21/2"* 3"
Bowl Size 11/4" 13/4" 115/16" 23/8" 213/16" 33/8"
Weight per 50' length Uncoupled 9 lbs. 13 lbs. 18 lbs. 21 lbs. 24 lbs. 32 lbs.
Weight per 50' length Coupled 11 lbs. 14 lbs. 19 lbs. 22 lbs. 25 lbs. 35 lbs.
*Available with a UL label add-on.

Scope
Quality:
The fire hose assembly supplied under this specification shall be constructed with superior quality materials. NFPA 1961 standards shall be observed in production of the assembly, in order to ensure its quality and durability.
Service Life:
Hose furnished under these specifications will have a potential service life warranty of not less than five years; barring mistreatment that would render it unfit for service. Upon delivery, the hose shall be free from defects in workmanship and materials. Any defective hose will be replaced at no charge.

Jacket Construction
The jackets will be woven evenly and be free of defects, including knots, lumps, or unsightly disfigurations that could jeopardize the integrity of the hose assembly. The warp yarn shall consist of staple polyester yarn. The use of filament or entangled yarn is expressly forbidden due to the lack of inherent abrasion resistance. The filler yarns shall be constructed of high strength, low elongation, filament polyester to reduce weight and increase flexibility.

Abrasion Impregnation
Hose assemblies are available with polymer impregnation that provide additional abrasion resistance. Colors include: yellow, orange, red, tan, black, blue and green. Color shall be pure and even in each hose. Impregnated hose shall meet the requirements of Mil-H-24606B for abrasion resistance.

Lining
The rubber lining shall be a single-ply extruded tube of synthetic EPDM compounded to resist ozone. The finished form shall be free of pits or other imperfections and have a smooth finish. No reclaimed rubber shall be used. Plastic tubes that sacrifice durability of the hose life for the sake of weight are not acceptable.
Backing:
The backing shall be of adequate thickness to create a smooth waterway but not greater than .020. The fire hose constructed under this specification shall be manufactured fully backed.
Tensile Strength & Ultimate Elongation:
Shall meet the standards of Underwriters Laboratories, Inc.TM as well as all other properties of UL-19 for rubber lined hoses.

Finished Hose
Markings:
Beginning at a point not less than four feet from the end, each fifty foot section shall be stencilled in indelible ink with letters at least one inch high stating the name of the manufacturer, month and year of manufacture, and service test to 250 PSI. The ink used will be of a contrasting color.
Methods of Testing:
All measurements and tests necessary to determine compliance of the fire hose specified requirements shall be made with ASTM, UL and NFPA 1961 designation, unless otherwise prescribed.

Couplings
As required by purchaser, expansion ring threaded, STORZ clamp ring, etc.


Key Fire Hose reserves the right to modify any specification without prior notice to meet or exceed changing standards. Customers are advised that special diameters or construction characteristics can be produced on special request. For more information, please contact your Key Fire Hose Corporation authorized distributor.

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