It could have affected the pattern width. In the new WIDER, the structure has been reconsidered, and by making the openings large and uniform, an air valve seat with less individual differences due to screwing has been realized.
ANEST IWATA WIDER1L-2-14J2S 1.4mm Suction feed HVLP spray gun successor LPH-101
Anest Iwata WIDER4L-V13J2 1.3mm HVLP Spray Gun, LPH-400 Successor, No Cup
ANEST IWATA LPH-300-144LV 1.4mm no Cup 3945 Gravity feed HVLP spray gun LPH300LV
ANEST IWATA LPH-300-164LV 1.6mm no Cup Gravity feed HVLP spray gun LPH300LV
ANEST IWATA LPH-300-124LV 1.2mm without Cup Gravity feed HVLP spray gun IWA-3940
ANEST IWATA LPH-300-144LV 1.4 mm Gravity feed HVLP Spray Gun Select no/with Cup