UNIWELD | sku: 235012 Uniweld Nitrogen Blow Out Kit Uniweld Nitrogen Blow-Out KitUsed to purge and pressure test Hvac sealed systemsIncludes regulator, 6' hose, stand for 40 lb cylinder and trigger operated schrader bellows for blowing out condensate lines and coils (tank not included)MFG# 40040 Log in for pricing