More recently, however, American Petroleum Institute Standard 682 (API 682) began to endorse the use of tubing for some seal piping plans. Regrettably, tradition-bound purchasers still opt for hard pipe; we are asking them to reconsider.
API 682 (4th edition) now specifies seal support system connections almost interchangeably. The Fluid Sealing Association’s Technical Director, Henri Azibert, graciously gave us an update on this topic, and agreed to pass our strong preference for tubing along to the API Task Force. Mr. Azibert pointed out that the API 682 (4th edition) text now offers considerable leeway: