Page 459 - Cat4800-Oct2011

445 Parker Industrial Hose Customer Service
866 810 HOSE (4673) 800 242 HOSE (4673)
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e-mail: indhose@parker.com
Chemical Guides
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), the Safety & Technical
Information section of this catalog 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.
PVC Temperature /Pressure Chart