LESER High Performance Flanged Safety Relief Valves UK

LESER High Performance Flanged Safety Relief Valves

Designed for critical industrial applications, LESER’s High Performance Safety Valves deliver rapid, high-capacity relief. Optimised for vapor and gas systems, these valves achieve full lift at a mere 5% overpressure, ensuring swift discharge of maximum mass flow. They offer exceptional price-performance, adaptable configurations, and industry-leading blowdown control (-10% gas/steam, -20% liquid). Developed in collaboration with plant engineers, these top-selling spring-loaded valves prioritize process and equipment protection through efficient, reliable performance.

Product Benefits

Versatile Application: Wide range of sizes, materials, and pressure/temperature ratings to fit virtually any industrial need.
Reduced Spare Parts & Easier Maintenance: Single trim design for steam, gas, and liquid, plus ringless construction.
Improved Efficiency & Reduced Loss: LESER Nanotightness exceeds API 527 standards, minimising emissions and product loss.
Cost-Effective Installation: High capacity design reduces installation expenses.
Accurate & Reliable Operation: One-piece spindle minimizes friction for precise performance.
Corrosion Protection: Self-draining body design prevents residue buildup.

Technical Data

Series 441 Designed for overpressure relief in chemical processing, heat transfer, steam generation, and compression systems.

Series XXL Designed for low-pressure steam service in large power plants, the system delivers capacities exceeding those defined by API and Series 441 standards.

Series 444 For OEM integration in dyeing machines and filter constructions, these valves offer stainless steel construction suitable for applications up to 16 bar / 232 psig.

Series 441 Full Nozzle This series addresses the same applications as Series 441, with the added capability to accommodate full nozzle designs and specific nozzle material specifications.

Series 458 Designed for applications including power generation with superheated steam, high-pressure chemical processes (e.g., NH3 synthesis, CO2 extraction), and desalination plants, these valves meet or exceed flange class PN 63 / CL600 requirements.