19.3. Check of the gate

Unscrew a cap from the gate.
Apply a little saliva on the gate. At formation of a bubble screw up the gate a reverse side of a cap. For tightening of the gate to use only a metal cap.
Repeatedly check the gate. At further education of bubbles and at impossibility of a dovinchivaniye of the gate replace the gate.
Surely screw a cap.