ABS Pipe

ABS pipe is a type of pipe used for spud guns. There are two types: Pressure Rated and DWV. Pressure rated ABS is hard to find. Some industrial supply stores may carry it. Pressure rated ABS pipe will be black and have the pressure rating on it. Pressure rated ABS is suitable for compressed air, unlike PVC. While PVC will shatter under pressure, ABS will split. However, DO NOT use DWV ABS. DWV ABS pipe is found at most hardware stores. It is not suitable for pressure. Combustion cannons can be made of DWV ABS, as ABS splits instead of shattering. ABS is also more impact resistant. For a low power combustion spud gun, DWV ABS is OK. ABS is solvent welded like PVC. Also, while ABS DWV pipe is cell core, ABS DWV fittings are solid, and will most likely be fine for pressure. However, it is still not a good idea to use them for pressure.