Got an oil seperator. OK to use PVC pipe fittings?
#1
Got an oil seperator. OK to use PVC pipe fittings?
Well, I'm installing an oil separator in my PCV line. I got it from home depot and it is the same as what Steeda sells (and I got it for $12, as compared to $60 from Steeda). It didn't come with any fittings. Is it OK to use PVC plastic fittings? What about Brass? I just don't want any issues with material incompatabitily.
Thanks,
jk
Thanks,
jk
#3
RE: Got an oil seperator. OK to use PVC pipe fittings?
I would not use PVC.
PVC has decent resistance vs. oil, but you can't be too careful. Keep in mind that in plumbing applications you use a petroleum solvent glue to dissolve the PVC to make fusion joints. I would be worried that over time the PVC could deteriorate due to exposure to oil, gas, or other chemicals.
Also, PVC has a relativley low maximum service temperature. That's the same reason why it's not used for hot water pipes in houses. It gets soft above about 180 degrees F. That is not a good safety margin for use under the hood of a car.
Metal is going to be the optimum choice. If you can't get metal, then get a plastic with better heat and chemical resistance, such as Nylon 6 or a flouropolymer like PTFE.
PVC has decent resistance vs. oil, but you can't be too careful. Keep in mind that in plumbing applications you use a petroleum solvent glue to dissolve the PVC to make fusion joints. I would be worried that over time the PVC could deteriorate due to exposure to oil, gas, or other chemicals.
Also, PVC has a relativley low maximum service temperature. That's the same reason why it's not used for hot water pipes in houses. It gets soft above about 180 degrees F. That is not a good safety margin for use under the hood of a car.
Metal is going to be the optimum choice. If you can't get metal, then get a plastic with better heat and chemical resistance, such as Nylon 6 or a flouropolymer like PTFE.
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