ARI® SAFE P 55.921 Proportional Lift Safety Valve PN40 DN32
Delivers gradual, controlled pressure relief for critical steam and thermal oil systems.
ARI SAFE P 55.921 Safety Valve provides safe operational continuity in critical systems thanks to its stainless steel construction. In addition, it offers staged protection against overpressure in steam and thermal oil lines. Moreover, the stainless steel body and internal parts deliver high resistance to corrosion.
The proportional lift principle opens the valve gradually once pressure exceeds the set value, therefore discharging fluid in a controlled manner. As a result, sudden blow-offs are prevented and system equipment is safeguarded. Furthermore, the flanged connection type simplifies installation, while the DN32 nominal diameter suits various line sizes. The valve is rated PN40 and withstands temperatures up to 400°C. Seat and disc are made of 1.4571 (AISI 316Ti) stainless steel, and the body is 1.4408 stainless steel.
ARI SAFE P 55.921 Safety Valve — Technical Specifications
This safety valve is used in chemical and petrochemical plants, power stations, and food industry process lines. In particular, it provides safe pressure management in steam, hot water, and thermal oil circuits. Additionally, it offers critical protection in the refinery and marine sectors, consequently supporting uninterrupted operations.
Key Advantages
- High corrosion resistance due to stainless steel construction
- Controlled discharge and long service life from proportional lift principle
- Safe operation under demanding conditions with 400°C maximum temperature tolerance
Applications
- Overpressure protection in steam and hot water systems
- Safety valve service in chemical and petrochemical plants
- Critical safety in power stations and refinery applications
ARI SAFE P 55.921 Safety Valve is the ideal solution for safety and efficiency in industrial facilities. ORFA Industrial has supplied this valve as an authorized distributor since 1985 and provides technical support. ORFA supplies worldwide and provides technical support.
ORFA INDUSTRIAL PRODUCTS INDUSTRY AND TRADE INC.
Your Reliable Partner in Industrial Flow Technologies

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