“4″ Air Blow Check Valve with 1/2″ NPT Cap” has been added to your cart. Continue shopping Remove item Thumbnail image Product Price Quantity Subtotal × 1.5" x 1" Concentric Weld Reducer Polished 316L $13.55 1.5" x 1" Concentric Weld Reducer Polished 316L quantity $13.55 × 4" Air Blow Check Valve with 1/2" NPT Cap $315.40 4" Air Blow Check Valve with 1/2" NPT Cap quantity $315.40 Update cart Cart totals Subtotal $328.94 Shipment Enter your address to view shipping options. Calculate shipping Country / region Select a country / region… United States (US) State / County Select an option… AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyomingArmed Forces (AA)Armed Forces (AE)Armed Forces (AP) City: Postcode / ZIP: Update US-MA Tax $20.56 Total $349.50 Proceed to checkout