Much has been discussed about the importance of the seams are climbing with the triggers on the same side.
The importance of the seams are always with the trigger back to the same side can be verified visually by the climber that both on the site of any manufacturer, as sold in stores of equipment, are always made available in this way.
Some sellers little accustomed to the practice of climbing, or even with dangerous defects that result in accident (see about the caso Tito Traversa).
It may seem as uninformed, and inexperienced, the climbers that there is no difference, but in reality there is a big difference in certain situations.
This provision of the triggers for the same side is for the “self uncliping” (self desclipamento) doesn’t happen during a climb, especially in more positive way or where the line taken is not vertical.
The spin of the connector in the climbing type fixed protections “P” is the most iconic, but may also occur in flaps.
During an escalating friction with the lower carabiner may cause the seam to turn and leave the protection when the cute do the trigger “desclipar” when in contact with the eye.
This cute when it happens in a flap, the trigger can desclipar on nut to tighten the parabolt.
So the more cautious climber always know what the right thing is the trigger be ALWAYS facing the same direction in sewing, and avoid always believing that “it doesn’t happen to me”.
See below, in illustrations as
1-when the carabiner clips of the seam (trigger for reversed) in the clip “P” and follows the left side of the clamp. The Karabiner of the rope gets the trigger to the right and the other to the left.
2 – while climbing the via, the climber’s rope creates friction with the metal connector of sewing making the seam up.
3 – When the seam goes up to a certain point the gate of the karabiner comes into contact with the clamp. When sewing up the arc force clip the trigger of the connector making it open or break.