The proportional lift safety valve is activated when system pressure gradually increases. This type of valve opens proportionally to the pressure rise, unlike full-lift valves. By providing controlled discharge instead of sudden release, system balance is maintained. This ensures the safety of both equipment and personnel.

The valve’s operating mechanism is designed with high precision. The spring mechanism is activated when the set threshold pressure is reached. This allows the fluid to be gradually released from the system. The discharged flow is proportionally increased according to the pressure, preventing overloading in advance.

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Where is Proportional Lift Safety Valve Used?

These types of valves are especially used in facilities where sensitive processes are carried out. In systems involving chemical reactions, pressure is released proportionally rather than suddenly, protecting reactors and pipelines. They are also preferred in systems where thermal expansion needs to be controlled.

They are widely used in petrochemical, food, beverage, and pharmaceutical production facilities. Proportional lift helps maintain process quality in these areas. Power plants, steam lines, and compressed air systems are also among their applications.

Product Features

Material: Stainless steel, carbon steel, or brass body
Connection: Suitable for geared or flanged systems.
Pressure Range: 0.2 bar – 25 bar
Operating Temperature: -10°C to +200°C
Opening Method: Progressive and proportional relief mechanism.
Sealing: PTFE, Viton, or metal gasket options.

Why Should a Proportional Lift Safety Valve Be Preferred?

These valves provide smooth and balanced pressure control within the system. Sudden discharge is prevented, protecting the equipment from damage. Energy losses are minimized, while process safety is enhanced. In addition, they offer long service life and low maintenance costs.

They provide an ideal solution, especially for applications requiring continuous fluid control in process systems. Manufactured in compliance with quality standards such as CE and ISO, they meet industrial safety requirements.

For detailed information and product options, you can visit the UNOX valve page or the safety valve category. Application-specific solutions are provided by our experts.