Safety Coupler with push-button system and connection for appropriate hose inner diameter, Automatic pressure relief for a safe removal without having to remove the dreaded "Whips effect of the nippels; by pressing the button behind when peeled away to leave instant pressure relief in the line and the nippels can be removed in one process; with USA Standards ASTM-D6603 ISO 4414 For Protection Of The User; Certified to ATEX 2; European profile 7.2 – 7.4 mm; Universal application; antistatic, ergonomic design and ultra light