Brass tank outlets are watermarked with external BSP thread and a size smaller internal BSP thread
The locking nut is left hand thread so when you are tightening fittings onto the BSP thread, it is not undoing the lock nut
Brass Tank OutletsBrass tank outlets are watermarked with external BSP thread and a size smaller internal BSP thread
The locking nut is left hand thread so when you are tightening fittings onto the BSP thread, it is not undoing the lock nut |