Used in aircraft fluid systems to connect moving parts with stationary parts.

Used in aircraft fluid systems in locations subject to vibration.

What Material is never used in the construction of flexible fluid lines.

Synthetic rubber compound which has excellent resistance to petroleum products.

Synthetic rubber compound which has an acetylene base. Its resistance to petroleum products is not as good as Buna-N

Synthetic rubber compound made from petroleum raw materials use with phosphate ester base hydraulic fluid (Skydrol).

Type of Hose below 250 psi. Fabric braid reinforcement

Type of Hose up to 3,000 psi. One wire braid reinforcement. Smaller sizes carry up to 3,000 psi. Larger sizes carry pressure up to 1,500 psi

Type of Hose all sizes up to 3,000 psi operating pressures.

markings are in contrasting colored letters and numerals which indicate the natural lay (no twist) of the hose and are repeated at intervals of not more than:

Hose marking used to indicate if a hose is twisted.

Hose suitable for use with phosphate ester base hydraulic fluid will be marked:

DuPont trade name for tetrafluoroethylene resin.

Hose material compatible with nearly every substance or agent used.

Name for a preformed hose assembly with a support wire

the deep, permanent impressions in the hose produced by the pressure of hose clamps or supports.

If a failure occurs in a flexible hose equipped with these end fittings, the entire assembly must be replaced.

Used to determine flexible hose size.

hydraulic oil or water

Hydraulic, fuel, and oil lines are generally tested using:

dry, oil-free air or nitrogen

Air or instrument lines are tested with:

5 to 8 percent of its total length

When installing flexible hose, provide slack or bend in the hose line from:

When pressurized, flexible hose contracts in

When pressurized, flexible hose expands in

Hose must be supported at least every:

Teflon™-cushioned clamp

Type of clamp is used in areas where the deteriorating effect of Skydrol, hydraulic fluid, or fuel is expected.

Type of clamp used to secure metal hydraulic, fuel, or oil lines in place.

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Flexible Fluid Lines

Fluid Line Terms

Term	Definition
Flexible Hose	Used in aircraft fluid systems to connect moving parts with stationary parts.
Flexible Hose	Used in aircraft fluid systems in locations subject to vibration.
Pure Rubber	What Material is never used in the construction of flexible fluid lines.
Buna-N	Synthetic rubber compound which has excellent resistance to petroleum products.
Neoprene	Synthetic rubber compound which has an acetylene base. Its resistance to petroleum products is not as good as Buna-N
Butyl	Synthetic rubber compound made from petroleum raw materials use with phosphate ester base hydraulic fluid (Skydrol).
Low pressure	Type of Hose below 250 psi. Fabric braid reinforcement
Medium pressure	Type of Hose up to 3,000 psi. One wire braid reinforcement. Smaller sizes carry up to 3,000 psi. Larger sizes carry pressure up to 1,500 psi
High Pressure	Type of Hose all sizes up to 3,000 psi operating pressures.
9 inches	markings are in contrasting colored letters and numerals which indicate the natural lay (no twist) of the hose and are repeated at intervals of not more than:
Lay lines	Hose marking used to indicate if a hose is twisted.
Skydrol	Hose suitable for use with phosphate ester base hydraulic fluid will be marked:
Teflon™	DuPont trade name for tetrafluoroethylene resin.
Teflon™	Hose material compatible with nearly every substance or agent used.
pre-set	Name for a preformed hose assembly with a support wire
Cold-Flow	the deep, permanent impressions in the hose produced by the pressure of hose clamps or supports.
Swaged	If a failure occurs in a flexible hose equipped with these end fittings, the entire assembly must be replaced.
Inside Diameter	Used to determine flexible hose size.
hydraulic oil or water	Hydraulic, fuel, and oil lines are generally tested using:
dry, oil-free air or nitrogen	Air or instrument lines are tested with:
1.5 system pressure	Hose are tested to:
5 to 8 percent of its total length	When installing flexible hose, provide slack or bend in the hose line from:
length	When pressurized, flexible hose contracts in
diameter	When pressurized, flexible hose expands in
24 inches	Hose must be supported at least every:
Teflon™-cushioned clamp	Type of clamp is used in areas where the deteriorating effect of Skydrol, hydraulic fluid, or fuel is expected.
Bonded	Type of clamp used to secure metal hydraulic, fuel, or oil lines in place.

Created by: Hawrylak

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