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Parker Hannifin Corporation
Parflex Division
Ravenna, Ohio
275
Coiled Air Hose,
Fittings
& Accessories
Hydraulic &
Pneumatic
Hose & Fit.
PTFE
Hose &
Fittings
The
rmoplastic
Tu
bing
Truck (Fleet)
Products
Tooling &
Equipment
Hose
Accessories
Technical &
Design
Information
Approvals &
Guides
Alphanumeric
Index
Hose Permeation Data
(510/510A)
Permeation Rate at 120°F
(Pound per Linear Hose Foot per Year)
Notes:
1. Data is for comparison only. Actual results may vary due to differences in application temperature and pressure.
2. Data is collected in highly controlled tests per UL1963.
3. Parker Safety Guide for Selecting and Using Hose, Tubing, Fittings and Related Accessories, Section 2.6:
Permeation: Permeation (that is, seepage through the hose) will occur from inside the hose to outside when hose is used with
gases, liquid and gas fuels, and refrigerants (including but not limited to such materials as helium, fuel oil, natural gas, or freon).
This permeation may result in high concentrations of vapors which are potentially flammable, explosive, or toxic, and in loss of
fluid. Dangerous explosions, fires, and other hazards can result when using the wrong hose for such applications. The system
designer must take into account the fact that this permeation will take place and must not use hose if this permeation could be
hazardous. The system designer must take into account all legal, government, insurance, or any other special regulations which
govern the use of fuels and refrigerants. Never use a hose even though the fluid compatibility is acceptable without considering
the potential hazardous effects that can result from permeation through the hose assembly.
Permeation of moisture from outside the hose to inside the hose will also occur in hose assemblies, regardless of internal pres-
sure. If this moisture permeation would have detrimental effects (particularly but not limited to refrigeration and air conditioning
systems), incorporation of sufficient drying capacity in the system or other appropriate system safeguards should be selected
and used.
Permeation Rate at 212°F
(Pound per Linear Hose Foot per Year)
Hose
Size
R12
R22
R507 R404A R502 R134A
-2
–
.28
–
–
.03
–
-3
–
.30
.08
.07
–
–
-4
–
.71
.15
.10
–
–
-6
–
1.11
–
–
.87
–
Hose
Size
R12
R22
R507 R404A R502 R134A
-2
–
–
–
–
–
–
-3
–
1.25
–
–
–
–
-4
.08
2.32
–
–
–
.07
-6
–
–
–
–
–
–