Basic Hose Flashcards
1.75” hose dry weight
i. A 50’ section weighs 18-19 lbs. dry
1.75” hose wet weight
ii. A 50’ section weighs 71 lbs. full of water.
1.75” has how many cubic inches of water?
1443 cuin
1.75” gallons?
6.25 gallons
1.75” threads per inch?
9 threads per inch
2.5” dry weight
31-32 lb dry
2.5” wet weight
138 lbs
2.5” cubic inches
2945 cubic inches
2.5” gallons?
12.75 gallons
Threads per inch on a 2.5”
7.5 per inch
5” couplings are made of ____
Aluminum
5” uses
sexless Storz couplings
400 bc
a. Ox gut was used.
b. Water forced out of gut by jumping or sitting on them
1673
a. Leather tubes sewn together.
b. These hose leaked badly and broke under pressure
1807
a. Riveted leather.
b. Reduced leakage, higher pressures, more water.
c. 40 to 50 feet in length total, weight of 85lbs empty.
1821
a. James Boyd patented rubber lined, cotton webbed hose.
b. Cotton shell gave abrasion resistance and flexibility.
c. Rubber became brittle in cold weather and soft in heat
1839
a. Charles Goodyear invented vulcanized (weatherproof) rubber.
i. Rubber + Sulphur + Heat = vulcanized rubber
b. Rubber was able to stay flexible at all temperatures.
c. Cotton shell gave strength coupled with flexibility and decreased bulk.
d. Widely used by 1871
Today’s firehouse
a. Double jacket polyester shell.
b. Chemical treatments for mold and mildew resistance, etc.
c. Rubber lining
d. Seamless constructions.
Describe TFD hose, specifically 1.75” and 2.5”
i. Measurement is the interior diameter.
ii. Has a continuous rubber inner core.
iii. Over-wrapped with 2 jackets of woven Dacron Polyester.
iv. The two woven jackets are independent of each other.
v. Treated with Hypalon polymer to resist mold and mildew.
vi. Mainly manufactured in 50’ sections.
NFPA for hose
1961
How much of 1.75” is on a TFD rig (min)?
650’ (transverse, manifold, bundles, handy folds, appartment folds, etc)
How much of 2.5” is on a TFD rig (min)?
ten 50’ sections in each bed (1000ft total)
2.5” uses
“i. 2 ½” Supply Lines
ii. 2 ½’ Fire Attack Lines
iii. Portable monitor
iv. Sprinkler and standpipe connections
v. Used in manifold lay
vi. Reverse lay
vii. Supply ladder pipe/High Rise/Large structure operations.
viii. One person folds
How to clean hose gaskets
clean threads swivels and gaskets with wire brush and rinse with warm water.
Describe booster/redline
“a. 1” diameter
b. Rubber covered with fabric reinforced rubber liner.
c. 200’ carried on Hose Reel.
d. Manufactured in 50’ or 100’ sections.
e. Pin Type couplings
Describe wildland hose
“a. Wildland (brush) fires
b. TFD carries only 1” wildland hose on pumpers.
i. 2 x 100’ sections
c. Single jacketed
d. Circular bias woven 100% polyester hose, inner-lined w/ elastomer.
e. Light and maneuverable
f. Couplings are now NST to mate to our redline.
“
Describe suction hose
“a. Not used in the field by TFD except on Water Tender.
b. Used at the test pit for annual pump test.
c. 4 ½” and 6”
d. Rubber covered. Fabric and plastic (Helix) reinforced. Rubber lined.
e. Used for drafting from static sources.
“
Types of fittings
“1. Double female
- Double male
- Adapter couplings
- Reducer couplings
- Hose cap
- Hose plug
- Plain Wye
- Gated Wye
- Siamese connection”
Double female
“a. Female fitting on both sides.
b. Connects two male couplings together.
“
double male
“a. Male fitting on both sides.
b. Connects two female couplings together.
“
adapter coupling
a. Used to change from one type or style of threads to another.
reducer coupling
“a. Used to reduce from one size to another.
b. Usually from 2 ½” to 1 ½”.
hose cap
“a. Attaches to male thread.
b. Used to cap off an open outlet or a section hose.
hose plug
“a. Attaches to a female coupling.
b. Used to cap off auxiliary suction inlets.
plain wye
“a. Used to take two lines from one.
b. Reduces from a larger line to smaller lines.
gated wye
Same as the Plain Wye, except that each outlet can be shut off independently.
siamese connection
“a. Used to connect two or more lines into one.
b. Siamese multiple smaller into a larger line.
c. Most commonly used on portable master stream device and ladder pipe operations.
d. Contain clapper valves to prevent backflow.
2.5” gate valve
“a. Holds pressure from either direction.
b. Uses a crank handle to lower/raise a gate into a wedge seat
c. May be used on engines or inlets or any place where a 2.5” valve is required to control flow
Hose damage types
Mechanical, chemical, thermal
Mechanical damage
“a. Cuts, snags, and abrasions to the outer jacket.
i. From dragging hose over rough surfaces.
ii. Protect with hose rollers or salvage covers when possible.
b. Damage to threads or swivels of couplings.
i. Resulting from dropping or dragging couplings.
c. Run over by a vehicle.
i. Common, especially when lying flat.
ii. May not appear damaged but must be placed out of service (tagged) and tested.
Chemical hose damage
“a. Penetrates the jacket, breaking down the cement which holds the rubber lining to the jacket.
b. Most common are gasoline, solvents, oils, grease, paints, and acids.
c. Petroleum products and paints cause rapid deterioration of the rubber lining.
d. Acids cause extensive damage to the jacket.
e. If it damages your skin, it will damage your hose
“
Thermal hose damage
"a. Happens frequently b. Jacket becomes scorched. c. Rubber lining decomposes, burns, hardens, and cracks. d. Protect is against needless exposure. "
Hose cleaning
“1. When dirty, wash with clean water and a brush.
- When exceptionally dirty, clean with mild soap and water.
- No solvents or petroleum products!
- Hose stored or loaded should be dry.
a. Prevents sulfuric acid production and the rusting of hose beds. “
Hose care and maintenance
“1. Designed to provide no less than 10 years of service if cared for properly.
- 20 year max service life (per NFPA)
- Hose tested annually, and after suspected damage.
- Length of service dependent on the care and maintenance it receives.
- Stores dry hose out of direct sunlight.
- Hose shall be washed and hung to dry in hose tower or ramp.
