Industrial valves · Клапаны предохранительные Leser (Safety Valves)
LESER Safety Valves: Engineering Reference and Specifications
LESER Engineering Solutions: Safety Valves for Pressurized Systems
LESER is a global leader in the development and manufacturing of precision safety valves. The company's engineering competencies are focused on ensuring absolute safety of technological processes in the oil and gas, energy, chemical, and pharmaceutical industries. LESER products are certified in accordance with the most stringent international standards, guaranteeing their impeccable reliability when operating with excess pressure.
Typology and Design Features of LESER Valves
Spring-loaded safety valves operate on the principle of mechanical counteraction. The force of a calibrated spring holds the disc in the closed position, counteracting the pressure of the working medium. When the set pressure is reached, the medium's force overcomes the spring's resistance, causing an instantaneous discharge of excess volume until the system stabilizes.
Pilot-operated safety valves (POSV) consist of a main shut-off assembly and a pilot control. The use of an impulse line from the working medium allows for the highest actuation accuracy and tightness up to the set pressure. This design is critically important for systems with high operating pressure and minimal hysteresis tolerances.
Key LESER Product Lines: Technical Overview
| Series | Technical Features |
|---|---|
| High Performance | Optimized for the chemical industry and processes with high flow capacity. Nominal size range from DN 20 to DN 400. Characterized by a compact design with a high flow coefficient. |
| Compact Performance | Universal solutions for a wide range of media and applications. Supports flanged and threaded connections, designed for pressures up to 1000 bar. Ideal for modular and compact installations. |
| Critical Service | Specialized valves with PTFE lining for protection against aggressive and corrosive media. An economical alternative to valves made from expensive exotic alloys. |
| Modulate Action | Designed for liquid systems subject to thermal expansion. Minimizes product loss due to proportional opening. Resistant to back pressure up to 40 bar. |
| S&R (Heating & Conditioning) | Specialized valves for heating, ventilation, and air conditioning (HVAC) systems. Fully comply with industry standards DIN EN ISO 4126-1 and TRD 721. |
| High Efficiency | Pilot valves for high-load energy and petrochemical installations. Ensures stable operation with high actuation cycles and minimal medium losses. |
Key Operational Advantages of LESER Valves
- Uncompromising Reliability: The design of the valves is calculated for extreme operating conditions, minimizing the risks of accidents and unplanned downtime.
- Global Standardization: Full compliance with API, DIN EN, ASME standards simplifies integration into international projects and certification.
- Material Adaptability: A wide selection of materials, including special alloys (Hastelloy, Monel) and polymer coatings, for compatibility with any aggressive media.
- High Technologism: The application of advanced sealing designs and discharge mechanisms ensures an extended service interval and stable performance characteristics.
Industry Specialization and Application
- Chemical Complexes: Protection of reactor equipment, rectification columns, and chemical storage systems.
- Oil and Gas Industry: Ensuring safety at production facilities, transportation (pipelines, LNG terminals), and hydrocarbon processing.
- Energy: Protection of boiler units, steam turbines, and high-pressure steam lines in thermal power plants, nuclear power plants, and hydroelectric power plants.
- Engineering Systems: Pressure control in industrial ventilation systems, heat substations, and compressor stations.
Engineering and Supply of LESER Valves from EV Group China
EV Group China specializes in comprehensive engineering and supply of high-tech pipeline valves for key industries. We provide direct deliveries of original LESER valves and their certified analogues for fuel and energy complex facilities and high-tech production. EV Group China engineers are ready to provide expert support in selecting equipment in precise accordance with your technical specifications (TS) and operating conditions.