Bulkhead Union (BU) December 28, 2017 by Bulkhead Union (BU) Item Description EZW-4BU4 EZ ¼” X ¼” Bulkhead Union EZW-6BU6 EZ ⅜” X ⅜” Bulkhead Union EZW-4BU6 EZ ¼” X ⅜” Bulkhead Reducing Union EZW-6BU4 EZ ⅜” X ¼” Bulkhead Reducing Union