leser pilot operated safety valve quotation

Pilot operated safety valves are controlled by the process medium in which they operate. To achieve this, system pressure is fed to the pilot valve (= control component for the main valve) via the pressure tapping line which uses the space in the dome above the main valve piston to open and close the main valve.

The pilot valve, also called the “pilot”, is the control unit of the pilot-operated safety valve. It controls the function and behavior of the main valve.

The primary purpose of a safety valve is to protect life, property and the environment. Safety valves are designed to open and release excess pressure from vessels or equipment and then close again.

The function of safety valves differs depending on the load or main type of the valve. The main types of safety valves are spring-loaded, weight-loaded and controlled safety valves.

Regardless of the type or load, safety valves are set to a specific set pressure at which the medium is discharged in a controlled manner, thus preventing overpressure of the equipment. In dependence of several parameters such as the contained medium, the set pressure is individual for each safety application.

Pilot Operated Safety Valves from the High Efficiency product group are especially suitable for applications with high pressure and offer optimal tightness right up to set pressure. They meet all the requirements of API 526 and therewith offer 100% compatibility. LESER offers pilot operated safety valves with rapid or proportional opening characteristics.

With almost 200 years of history, LESER has manufactured its safety valves to reflect state-of-the-art design and developed a product range to provide solutions for all sectors of industry. Customer satisfaction is the impetus behind LESER’s progress. LESER defines its products based on 7 pillars of achievement; rapid availability, product range, global network, quality, reliability, price and sustainability.

The POSV consists of a main and a pilot valve. The pilot valve has two designs: The pop action-design ensures a rapid opening of the main valve. This version is important for applications where the discharge capacity needs to be reached quickly e.g. for gas applications. The modulate action-design has a gradual opening. The aim is, to minimize the media...