Ultrapure 1106390 BFO3+ Spade Connector. This 03 Spade Connector is a genuine Ultrapure part. With over 75 years of combined commercial and industrial water treatment experience, Ultrapure can provide solutions specific to your industry and needs. With an understanding that every customer is unique, the Ultrapure team has the expertise to implement the most cost-effective means of producing purified water to meet all required specifications.