It is designed to be used at 400 bar and 600 bar. The most commonly used thread sizes are M16X2, M16X1.5; S 12.65X1.5 and plug-in. 1/8″ BSP, 1/8″ NPT, 1/4″ BSP, 1/4″ NPT, 1/2″ BSP, 5/16″ UNF, 7/16″ UNF, 9/16″ UNF, M 10X1 , M12X15, M 12X1.5, 16X1.5 block sizes are in the production program.