When the user compresses the trigger (Figure 2 labeled D), the valve (not visible in Figure 2) at the air inlet (Figure 2 labeled E) opens to allow air to flow into the air cylinder (Figure 2 labeled F). If a pneumatic rivet gun does not have a capture cup, the user tilts the gun downward to drop the mandrel from the jaw assemblage. The capture cup (Figure 2 labeled C) at the back of the rivet gun catches mandrels when they break off the rivet. Spring: The spring pushes the plunger forward towards the jaws when the user is not pulling the trigger.Plunger: The plunger has a v-shaped head, which presses against the jaws to open them when the user is not pulling the trigger.Jaws: The jaws grip the mandrel and pull it back to break it off the pop rivet during installation.

The jaw assemblage contains the jaws, a plunger, and a spring. The jaw assemblage cover (Figure 2 labeled B) protects the jaw assemblage (not visible in Figure 2) from debris. The nose piece (Figure 2 labeled A) holds the pop rivet. Pneumatic rivet guns typically come with multiple nose pieces for differently sized rivets. View our online selection of pneumatic rivet guns!Īn air rivet gun has several components.

Buck rivet gun repair