ARI – Pressure Reduction & Control
Industrial Pressure Regulators, Pressure Reducing Valves, Self-Operated Pressure Proportional Regulators.
ARI-PREDU Series
The pressure regulating valve is a direct acting proportional regulator, self operated; which regulates a high inlet pressure to a smaller downstream pressure. The downstream pressure is regulated, this means the valve closes when the downstream pressure rises.
ARI-PREDEX Series
The excess pressure (back-pressure) regulator is a self operated, direct acting proportional regulator, which regulates the upstream pressure. The upstream pressure (p1) is regulated, this means, the valve opens when the upstream pressure rises over an adjusted set point. If the upstream pressure decreases under the adjusted set point, the valve closes automatically. Because of the stainless steel bellows, the downstream pressure (p2) has no influence.
ARI-PRESO Series
The pressure regulating valve PRESO is a spring loaded differential pressure-control valve. The main applications are:
- Pump protection: PRESO inserted parallel to the pump, this secures a minimum flow
- Application in bypass lines from users, e.g. heat exchanger in thermal oil systems to sustain a minimum flow
- Parallel to piping systems to avoid to higher differential pressures
- Pressure maintaining valve to avoid the flashing in condensate systems.
