Page 416 - Cat4800-Oct2011

402 Parker Industrial Hose Customer Service
866 810 HOSE (4673) 800 242 HOSE (4673)
Strongsville, OH South Gate, CA
Eastern USA Western USA
www.safehose.com
e-mail: indhose@parker.com
Safety & Technical Information
PVC / Thermoplastic Hose and Tubing
Termoplastic polymer compounds are designed to resist
deteriorationwhen exposed to awide range of commercial
chemicals and environmental conditions. Te resistance
to attack is based on many factors, including temperature,
pressure, chemical concentration, exposure to ultraviolet
light, velocity of the media and duration of exposure/
service (intermittent or constant). Te user is solely
responsible for making the fnal selection of the hose
and tubing, and meeting all endurance, maintenance,
performance, safety and warning requirements of the
application.
Example from the Fahrenheit Chart
If Working Pressure at 68°F is 200 PSI, then the WP at
110°F is 200 x 50%, or 100 PSI.
Example from the Celsius Chart
If Working Pressure at 20°C is 14 bar, then the WP at 50°C
is 14 x 40%, or 5.6 bar.
For further information, refer to the Parker Safety Guide No. 4400-B.1 (pages 395-397) and the Parker User Responsibility
Statement on the inside front cover of in this catalog.
Effects of Elevated Temperatures
on PVC/ Thermoplastic Hose and Tubing
Termoplastic hose and tubing achieve their optimum physical properties at room temperature, 68°F (20°C). As
thermoplastic materials are exposed to increased ambient temperatures, they soften and their physical properties
change. For hose and tubing, heat sharply reduces the available working pressure and coupling retention. Te charts
below illustrate this efect. In all cases, test the product in a controlled, secure and safe environment, and consider all
operating conditions prior to use.
Critical Applications (Continued)
NOTE: Te rated maximum working pressures listed
in this catalog for thermoplastic hose and tubing are
based upon a pressure test temperature of 68°F (20°C)
unless stated otherwise.
WARNING! As temperature increases or decreases,
burst pressure, safe working pressure, coupling
retention properties, and other safety characteristics of
the hose or tubing can signifcantly decrease. Failure to
consider how temperature and other conditions afect
hose and tubing performance may cause property
damage, serious bodily injury or death.