The chart below will illustrate the pressure derating of pvc as temperatures increase.
Schedule 80 pvc flange pressure rating.
Schedule 80 fittings schedule 80 and schedule 40 tapered socket dimensions pvc schedule 80 astm d 2467 pvc schedule 40 astm d 2466 american national standard taper pipe threads npt ansi asme b1 20 1 astm d 2467 astm f 1498 effective nominal thread threads pitch of size length l per inch thread p 1 2 0 533714 0 07143 3.
Be aware that schedule 40 pvc pipe does have a lower pressure rating therefore using schedule 40 parts on a primarily schedule 80 pipe system is not recommended.
Maximum pvc service temperature 140 f.
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Various pressure ratings 120 psi to 1230 psi excellent physical properties and flammability characteristics.
The speci fi ed derating factors for pvc are suitable for pipe conveying water at elevated temperatures.
Due to material cost variations prices subject to change.
The maximum operating pressures derates with temperature.
Pressure rating for pvc schedule 80 unions.
Schedule 80 pvc technical information schedule 80 pvc pipe dimensions pressure ratings made in the u s a.
Schedule 80 pipe nipple pressure rating has thicker dividers and can with stand higher psi pounds per square inch.
For pvc fitting schedule 40 and pvc fittings schedule 80 the optimal temperature at which pvc can operate at the highest psi would be 73 degrees fahrenheit.
Socket coupling reducing socket coupling s x s pvc schedule 80 4501 4501r design stress of 2 000 psi at 73 f maximum service temperature 140 f universal part no.
Max working max working pressure 73 f pressure 73 f.
1 psi lb in2 6 894 8 pa n m2 1 inch 25 4 mm.
Maximum pvc service temperature 140 f pressure de rating at elevated temperatures the pressure ratings given above are for water non shock 73 f.
Made in the u s a suitable for oil free air handling to 25 psi not for distribution of compressed air or gaspage 336.
To give you a thought of the size contrast 1 plan 40 pvc pipe has a 133 least divider and 450 psi while plan 80 has a 179 least divider and 630 psi.
As the temperature of the pvc increases the pressure that the pvc can withstand will decrease.
829 female socket connections do not use or test with compressed air or other gases astm d2467 nsf ansi standard 14 nsf ansi standard 61 annex g.
One of the more complex questions in the plastic pipe and fittings industry is associated with the pressure rating of fit tings used in pvc schedule 40 and pvc schedule 80 systems.
This makes it perfect for mechanical and synthetic applications.
Schedule 40 and schedule 80 pvc pipe and fittings have identical od outer diameters and can be used interchangeably if needed.
