Sale Quick view Mann Non-Return Valve 2400843621 for MANN ProVent 200 Catch Can Compare MSRP: $43.00 $43.00 $36.55 Non-Return Valve for use with:MANN+HUMMEL ProVent 200 Catch Can For applications where oil return line is required to be plumbed back into sump above the oil level. Specs: 1/2" IN/OUT.See also our ProVent Drain Kit for $25.00 to finish off the job like a... Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List