Operation Guide | How to Adjust Pressure on A and A Pro Hydraulic Units
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- publisher
- RUBR
- Issue Time
- Sep 25,2026
Summary
A simple step-by-step guide to adjusting hydraulic pressure on A and A Pro butt fusion machine hydraulic units before operation.
Before using an A or A Pro hydraulic unit, the pressure should be adjusted to the required setting.
The pressure regulating valve is not fixed at a preset position when the machine leaves the factory. Before operation, it is recommended to first loosen the pressure regulating valve, then set the required pressure again.
Follow these steps:
1. Turn the pressure regulating valve counterclockwise to loosen it.
2. Push the control lever forward and watch the pressure gauge.
3. Tighten the pressure release valve.
4. Turn the pressure regulating valve clockwise to increase the pressure.
5. Stop adjusting when the pressure reaches the required value.
The video below shows the complete pressure adjustment process for A and A Pro hydraulic units.