What is the trigger valve kit number for the Bostitch Model RN46 Roofing Nailer? Support October 03, 2020 18:16 The trigger valve kit for the RN46 is the TVA6. Please click here to view a parts list or topurchase this part on our Bostitch ServiceNet website. Related articles How can I tell when my Bostitch tool was manufactured? N62FN trigger valve N62FN remote trigger valve My Bostitch pneumatic tool leaks air from the trigger area when I actuate the trigger, and the tool will not cycle. When the trigger is released, the leak will stop. What are the most common causes? Comments 0 comments Please sign in to leave a comment.