The pressure gauge joint diameter is 21, 14 teeth per inch. What does it mean?
The number of teeth 14 teeth, thread big diameter 21 of the thread, usually G1/2, ZG1/2 or 1/2NPTIf your thread doesn't taper, that's G1/2.If there is taper, it may be ZG1/2 or 1/2NPT.. These two threads are easy to be confused and have to be measured carefully to distinguish them
The outer diameter is 21, and the 14 teeth have taper and no taper.Without taper is the 1/2 interface.Points with taper are G1/2, NPT1/2, ZG1/2.- - Wuxi Hui Hua Instrument Technology Department - -I hope to give you a satisfactory answer! Wish you happy every day!If you have any other questions, you may ask!
