Midland OPW A-222 Vacuum Relief Valve 5 PSI 316 Stainless Steel Flanged Railcar
Midland OPW Vacuum Relief Valve (A-222-W-NS). For sale is aMidland OPW A-222-W-NS Vacuum Relief Valve. Mounting: Flanged 3-7/8″ Bolt Circle (4x 5/8″ holes). Body Material: Stainless Steel (Corrosion Resistant).