These specifications apply to 1
1 3/4", 2" and 2 1/2".
The hose produced under these specifications shall conform to the NFPA 1962
Standards during the entire production and assembly process of manufacture.
Upon delivery, the hose shall be guaranteed for a period of two (2) years
against defects in material and workmanship. Defective hose will be
replaced free of charge.
Hose shall be evaluated in accordance with the principles and practices
listed in NFPA Standard 1961 (1997 edition) and related standards. When
tested as such it shall have the following properties.
Tensile elongation of the vulcanized rubber compound used in the hose shall
not be less than 1750 psig.
Permanent elongation of the vulcanized rubber compound shall be less than
The adhesion between samples of the reinforcement web and either the liner
or the cover shall exceed NFPA 1961 requirements. The sample width shall
be 1-1/2" as called out in the standard.
When subjected to hot air over aging at 158 degrees F for 96 hours, the
tensile strength an ultimate elongation shall be at least 75% of the original
When subjected to an internal static water pressure of 100 psi, the hose
shall withstand a surface temperature of 1200 degrees F for at least 60 seconds
Hose shall be capable of practical use down to -35 degrees F.
When evaluated in accordance with standards ASTMD518, procedure B, 70 hours
at 118 degrees F, 100 pphm of ozone, the cover or liner shall show no visible
signs of cracking.
Contamination by most chemical substances, oils, greases, hydrocarbons, and
exposure to seawater shall have no effect on the short or long-term performance
of the hose. The manufacturer shall provide a copy of the chemical
resistance chart for the hose on request.
Long-term use is determined in no small measure by the abrasion resistance
of the cover of the hose. To ensure this is adequate, the hose, when built
to the weights listed, shall withstand the following abrasion tests:
Factory Mutual Method:
Hose shall exceed the Factory Mutual
Research Corporation test for abrasion. This is listed in their Standard
dated May 1995, section 5.8.
Underwriters Laboratories Method:
When tested according to the method listed
in Underwriters Laboratories Inc. Standard 219, Hose shall
withstand 7,000 cycles on the defined reciprocating
Taber Abraser Method:
When evaluated against the procedure listed
in ASTM D2215 Reinforcement shall not show signs of damage after
15,000 cycles. Load shall be 2.2 lbs. Per
wheel and type shall be H22.
When tested against the procedure listed in MIL STD 24606 the maximum water
absorbance shall be no more than 50 lbs. in a 50-foot length.
The hose shall be fitted with either (A): Storz type Quick connect couplings
in accordance with NFPA Standard 1963, 1997 edition. Or (B): Lightweight,
extruded aluminum alloy, hard coated, rocker lug couplings. These shall be
expansion ring type, NH threads in accordance with NFPA 1963, 1997 edition.
Or (C): as specified. The couplings shall be warranted for the life of the
Each length of hose shall be indelibly marked with letters and figures at
least one inch high with the following:
a) Manufacturer's name or coded designation
b) Trade name or hose designation
c) Month or quarter and year of manufacture.
d) The words "Service Test to ______ PSI."
Additional markings may be added
based on specific requests.