Erlian Ball

Structure:
1. The rubber air sac (outer net rope, prevent excessive pressure balloon burst)
2. Manually squeeze rubber and balloon
3. Rubber trachea
Purpose: rubber air pipe connected to the instrument, filling equipment (automatic burette, gas safety syringe etc.), play a positive pressure, manual extrusion rubber ball, the pressure of instrument and equipment etc., to achieve the required pressure.

Erlian Ball