Based on the blog post “Chemical Injection Quill for Oil & Gas” written by my colleague Kevin Alamag, I would like to dive more into the depth of the application fields of Injection / Sampling DBB Valves. In my course of work talking to OEMs, EPCs, end-users and other clients on this injection/sampling area, I was surprised to know that there are many misunderstandings on this small but important product range within the whole process.