Milton part number S-1091-1. 1/2" Male NPT 1/2" Tube Male 1/2" MNPT tank check valve is used to keep air volume and pressure from escaping back into compressor heads while not operating. Free Shipping is for continental USA only. If you live in Alaska, Hawaii, or PR please contact us for a shipping quote before bidding. All items are sold as shown. Since we offer free shipping we will ship the items the cheapest most cost effective way possible.
