Attack
Lite - Nylon
Detailed Specifications
Quality:
The fire hose to be supplied under this specification is a premium
quality, double jacket municipal fire hose. All materials used in
the fabrication of the hose shall be of the best quality
commercially available.
Service Life:
The
fire hose furnished under the terms of this proposal has a potential
service life of 10 years, barring mistreatment or accidental damage that
would render the hose unfit for service. Upon delivery, the fire hose
shall be in first-class condition free from defects in workmanship and
materials. The supplier shall provide replacement of any such hose as
may be defective without any charge whatsoever to the Fire Department.
There shall be a materials and workmanship warranty of 1 year.
TECHNICAL INFORMATION
NFPA Standard:
The
hose must meet all the requirements of NFPA 1961, Standard on Fire
Hose (2002 Edition).
Jackets:
The jackets shall be evenly and firmly woven, free from unsightly
defects, dirt, knots, lumps, and irregularities of twist that might
affect the serviceability of the finished product.
Each jacket shall be seamless and shall have filler yarns woven around
the hose throughout its length, with the warp ends interwoven with warp
yarn and covering the filler yarns.
Warp ends of both the inner and outer jackets shall have nylon entangled
filament yarn, structured to allow total saturation of an abrasion
treatment. The use of polyester or staple yarns in the warp is not
allowed.
Filler yarns of both the inner and outer jackets shall be high-tenacity
filament polyester developed, designed, and processed for fire hose
jacket filler yarns. These filament polyester yarns shall be free from
defects that are unsightly or may affect the serviceability of the
finished hose. The entangled nylon warp ends must completely cover and
protect the filament polyester filler yarns.
Impregnation:
Each outside jacket shall be completely impregnated by a mechanical
process to provide coverage of an abrasion heat resistant,
water-repellent compound prior to the jackets and liner being combined.
Coating applied to finished hose, allowing varied absorption to the
inside jacket, is not acceptable.
Lining:
The thermoplastic lining shall be a single ply extrusion of polyether
urethane polymer, which naturally resists hydrolysis, ozone, and
oxidation. Natural or synthetic rubber is Not Acceptable. No reclaimed
material or thermoplastic through the weave extrusion lining shall be
used. The lining shall meet the requirements of National Sanitation
Foundation Standard 14 for potable water use. The lining
thickness shall be tightly controlled to reduce weight, increase
compactness and kink radius.
Thickness:
1½”,
1¾, 0.026” maximum
2½” & 3” 0.036 maximum
Tensile Strength:
2000 psi minimum.
Elongation:
400% minimum (1” to 5”)
Ozone Resistance:
Lining
specimens shall be subjected to ASTM D 1149-91, “Standard Test Method
for Rubber Deterioration — Surface Ozone Cracking in a Chamber”.
Specimens shall be prepared in accordance with ASTM D 518-86, “Standard
Test Method for Rubber Deterioration — Surface Cracking”, Procedure C,
and shall be elongated 15%. Ozone concentration shall be 100+/- 5 parts
per hundred million by volume. Temperature shall be 40.0° +/- 1.0° C
(104° F). Time shall be 100 hours. There shall be no appearance
of cracking or crazing when viewed under a 7-power magnifying glass at
any time during or at the end of the 100 hour exposure.
Accelerated Aging:
Lining
specimens shall be subjected to ASTM D573-88, “Standard Test Method for
Rubber — Deterioration in an Air Oven”. Specimens shall be exposed to
70° +/- 1° C temperature for a duration of 166 +/- 2 hours and shall be
allowed to rest for 24 +/- 1 hours before testing. The tensile strength
and ultimate elongation of the rubber lining after aging shall not be
less than 75 percent of the original tensile and elongation.
Adhesion:
The
adhesive must be of uniform thickness around the circumference of the
lining. The adhesion shall be such that the rate of separation on 1½”
strip of lining, transversely cut, shall not be greater than 1” per
minute under a weight of 12 lbs.—No Exceptions
Low
Temperature Flexibility:
The
hose shall be capable of performing in extreme cold temperature
conditions. A 3-foot section of hose shall be exposed to a temperature
of -54° +/- 2° C (-65° +/-3° F) for a period of 24 hours. At the end of
the exposure period, and while maintained at the -55°C exposure
temperature, the hose shall be rapidly bent 180° double on itself, first
one way and then the other. There shall be no cracking or breaking of
the jacket or liner. Leakage shall be cause for rejection.
Hydrostatic Test:
(A)
Hydrostatic tests shall be conducted on hose equipped with the
couplings to be delivered in accordance with NFPA 1961.
(B) Each length of hose is to be subjected to a hydrostatic proof
test pressure of 800 psig for at least 15 seconds and not more than
1 minute. Higher test pressures, which may weaken the hose, are
expressly forbidden.
(C) Twist: The hose shall not twist more than 4-1/4 turns per 50 ft
for the 1½”, 1¾”, and 2” sizes, and not more than 1¾ turns per 50 ft
for the 2½” and 3” sizes under a pressure of 800 psig. No final
twist in a direction to loosen the couplings shall be permitted.
(D) Warp: The hose shall not warp more than 20” from a straight
line drawn from center to center of the fittings at the ends of the
hose, and the hose shall not rise from the table.
(E)
Expansion:
The expansion in circumference of the hose between 10 and 800 psig
shall not exceed 8%.
(F)
Elongation:
The elongation between 10 and 800 psig shall not exceed 8% for the
1½, 1¾”, 2” sizes, and shall not exceed 10% for the 3” size.
Burst Test:
A 3-foot sample of hose chosen at random shall stand without failure a
hydrostatic pressure of 1200 psig while lying straight or curved on a
27” radius. Retention of the coupling to the hose shall equal or exceed
the burst pressure.
Kink Test:
A full
length shall withstand, while kinked, without failure, a hydrostatic
pressure of 600 psig.
Diameter:
The hose shall have an internal diameter of not less than the trade size
of the hose, except that internal diameter of the 2½” hose shall not be
less than 2-9/16”.Weight
Chart:
| Hose
Size |
Proof
Test
Pressure (psig) |
Service
Test
Pressure (psig) |
Burst Test
Pressure (psig) |
Kink Test
Presure (psig) |
Cplg
Bowl Size (in.) |
Weight
Per 50’ Uncpld (lbs.) |
Coil
Dia. Per 50’ (in.) |
Flat Width |
| 1-1/2" |
800 |
400 |
1200 |
600 |
1-15/16 |
l2 |
16 |
2-7/8" |
| 1-3/4" |
800 |
400 |
1200 |
600 |
2-1/8 |
14 |
16 |
3-1/8" |
| 2-1/2" |
800 |
400 |
1200 |
600 |
3 |
22 |
18 |
4-1/4" |
| 3" |
800 |
400 |
1200 |
600 |
3-9/16 |
27 |
19 |
5-1/4" |
| 4" |
600 |
300 |
900 |
450 |
4-17/32 |
35 |
19 |
6-5/8" |
| 5" |
600 |
300 |
900 |
450 |
5-3/8 |
46 |
21 |
8-5/8" |
Method
of Testing:
A)
All measurements and tests necessary to determine compliance of the
fire hose with the specified requirements shall be made in accordance
with ASTM D 380-87, ”Standard Test Methods for Rubber Hose”,
except as otherwise specified.
B)
All Tests shall be conducted at the point of manufacture, or at a
laboratory equipped for such testing. All tests shall be performed as
specified in NFPA 1961 (1992 Edition). Hydrostatic tests shall
be conducted under controlled conditions employing equipment capable
of supplying a uniform pressure.
Please
call 1-800-334-6823 or send us e-mail if you require more information..
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