NAVARME 3/8" 2 x 10mm Non-Return One Way 3/8" Air Fuel Oil Check Valve Diesel Gas

Work perfect, but after seeing other reviews you should test your's when it arrives by blowing with the valve (open), then blowing hard against the valve (closed).If you feel any air going through then the seal is defective. Get a replacement.I use these in the fresh air tubes for my vehicles PCV systems and have seen a notable decrease in oil consumption.

Didn’t expect these to be plastic painted to look metal.

Automotive Usage-oil catch can installation-2015 Hyundai Veloster TurboI’ve been using this for about 6+ months, no issues-the barbs on it helped to secure the vacuum line. Excellent and durable feeling product.

Junk

Did the job

No issues

Used it on my wast oil burner. Works good

worked well in hot area under hood,wearas the plastic models melted

I got this to install right after my gas tank in my carb'd truck. The fuel seemingly would flow back to the tank making it a struggle to start the truck after a few days (4-5 cranking attempts) and the filter would also be empty of fuel. After 2 days, so far fuel is still in the filter just before the carb indicating the valve is working which should mean easier starts.