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This is from the Home Depot website explaining the properties of ABS and PVC.
This may give you a better understanding why to use ABS if you're going to make a custom air intake.
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ABS or acrylonitrile-butadiene-styrene is a rigid plastic used for drain, waste and vent in mobile homes as well as in residential and commercial sanitary systems. The pipe is black in color, crush resistant and has an air temperature range of -40°F to 180°F. It comes in sizes of 1 1/2" to 4" in diameter. ABS is strong, but light and easy to cut. ABS is joined with solvent glue and plastic fittings. Transition fittings may be used to make connections to steel, copper or cast iron. ABS is restricted in some areas, so check your local codes first.
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PVC or polyvinyl chloride is used for cold water applications only. It is a white, rigid plastic and comes in 10- and 20- foot lengths. Schedule 40 is the most common choice for residential work; pipe from 1/2" to 2" in diameter is used for pressure applications, while pipe diameters of 1 1/2" and up are used for DWV. Customary pressure applications include irrigation systems and the main water lines between the street and a residence. Schedule 300, 200 and 125 may also be used for irrigation systems. If you are using PVC for a supply line, be sure to choose pipe that has been approved for drinking by the National Sanitation Foundation (NSF). PVC is highly resistant to damage from heat or chemicals; it is joined with solvent glue and plastic fittings.
This may give you a better understanding why to use ABS if you're going to make a custom air intake.
ABS or acrylonitrile-butadiene-styrene is a rigid plastic used for drain, waste and vent in mobile homes as well as in residential and commercial sanitary systems. The pipe is black in color, crush resistant and has an air temperature range of -40°F to 180°F. It comes in sizes of 1 1/2" to 4" in diameter. ABS is strong, but light and easy to cut. ABS is joined with solvent glue and plastic fittings. Transition fittings may be used to make connections to steel, copper or cast iron. ABS is restricted in some areas, so check your local codes first.
PVC or polyvinyl chloride is used for cold water applications only. It is a white, rigid plastic and comes in 10- and 20- foot lengths. Schedule 40 is the most common choice for residential work; pipe from 1/2" to 2" in diameter is used for pressure applications, while pipe diameters of 1 1/2" and up are used for DWV. Customary pressure applications include irrigation systems and the main water lines between the street and a residence. Schedule 300, 200 and 125 may also be used for irrigation systems. If you are using PVC for a supply line, be sure to choose pipe that has been approved for drinking by the National Sanitation Foundation (NSF). PVC is highly resistant to damage from heat or chemicals; it is joined with solvent glue and plastic fittings.
Just though I'd share.
