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Page 1 of 2 Working pressure
The following tables illustrate the permissible working pressures of the aquatherm piping systems based on a 50 year life-cycle. The balance between working pressure and operating temperature varies based on the wall thickness of the pipe, as well as the presence of a faser-composite layer. All wall thicknesses are determined by SDR (standard dimension ratio) in which the wall thickness is a ratio of the total diameter. For example, the wall of an SDR 6 pipe is 1/6 the total diameter of the pipe.
Potable water installations
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Temperature
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aquatherm greenpipe
SDR 11
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aquatherm greenpipe
SDR 7.4
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aquatherm greenpipe
faser-composite pipe SDR 7.4
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Permissible working pressure (psi)
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70°F
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185
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295
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355
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105°F
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135
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210
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255
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120°F
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110
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175
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215
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140°F
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95
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145
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175
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180°F
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40
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100
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100
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SDR = Standard Dimension Ratio (diameter-/wall thickness ratio)
Working pressure is valid for all pipe sizes of the same SDR.
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