leser pilot operated safety valve made in china

With more than 1,050 employees and 130,000 safety valves produced per year, LESER is the largest manufacturer of safety valves in Europe and one of the leading companies in its industry worldwide.

LESER offers spring loaded and pilot operated safety valves for all industrial applications according to the Pressure Equipment Directive and ASME XIII. Major companies in the chemical, oil and gas, petrochemical, energy, technical gases, LNG/LPG, pharmaceutical, food and beverage, shipbuilding and heating and air conditioning industries use LESER safety valves.

LESER safety valves are developed for the international market in Hamburg and manufactured in the modern plant in Hohenwestedt/Germany. In addition, LESER produces safety valves to the same standards in India and China for the local markets. Nine subsidiaries and offices in Europe, America, the Middle East and Asia as well as authorized contacts in over 80 countries guarantee competent customer advice and fast, reliable deliveries.

With more than 1,050 employees and 130,000 safety valves produced per year, LESER is the largest manufacturer of safety valves in Europe and one of the leading companies in its industry worldwide.

LESER offers spring loaded and pilot operated safety valves for all industrial applications according to the Pressure Equipment Directive and ASME VIII. Major companies in the chemical, oil and gas, petrochemical, energy, technical gases, LNG/LPG, pharmaceutical, food and beverage, shipbuilding and heating and air conditioning industries use LESER safety valves.

LESER safety valves are developed for the international market in Hamburg and manufactured in the modern plant in Hohenwestedt/Germany. In addition, LESER produces safety valves to the same standards in India and China for the local markets. Twelve subsidiaries and offices in Europe, America, the Middle East and Asia as well as authorized contacts in over 80 countries guarantee competent customer advice and fast, reliable deliveries.

The liquefaction process must be designed efficiently so that the LNG can be offered economically. The necessary cryogenic media temperatures of -161 to -164 °C represent a challenge for the technical design of the individual components in the plant. This also applies in particular to the safety valves, which must function reliably as the final protection in the event of overpressure, even at the cryogenic process and Russian ambient temperatures.

LESER valves meet all requirements for use in natural gas liquefaction plants and offer a complete product range. The valves are designed in the low-maintenance “Durable Design” and can be adapted to the plants by various options.

The tightness of the safety valves has been proven under real conditions at media temperatures below -146 °C on LESER’s own cryogenic test bench. The precise helium leak test is based on the DIN EN 13648-1 standard.

The plant efficiency was supported by the use of pilot-operated safety valves (POSV) in the relevant areas. In contrast to spring-loaded safety valves, they are tight until they respond and thus meet the requirement of a higher operating pressure in relation to the response pressure of the plant. Six POSVs now support the efficiency of LIMUM® technology the liquefaction plant.

The LESER POSV for LNG is based on the proven design for LPG applications - Liquefied Petroleum Gas, which has been in use for many years as a standardized solution.

For the LNG low temperature range, LESER has further developed the design modularly so that it can be adapted to the respective project requirements. In the plant in Russia, for example, an evaporator was used and the pilot was thermally decoupled from the main valve to ensure a gaseous media state in the pilot. A temperature-resistant PTFE compound for piston sealing in the main valve enables the spring-loaded lip seal to be used at operating temperatures as low as -162 °C. The main valve is equipped with a PTFE compound for the sealing of the piston. The special seat bushing design does not require a soft seal in the wetted inlet area. The controlling pilot valve is available with a low-temperature resistant soft seal in Pop Action and Modulate Action versions for various requirements.

LESER’s project department supported Linde from the first FEED phase to the commissioning of the project. The production segment “Project Assembly” is specially designed for the requirements of projects and offers optimal conditions for customer acceptance.

Why did the customer choose LESER products?Linde relies on LESER’s know-how in the cryogenic market, for example in projects with temperatures down to -269 °C for liquid helium applications. The company has been working with LESER in the field of technical gases for many years and knows their services very well. The joint experience in the project management of air separation plants and the complete LNG product range, in particular the modular Cryo-POSV in the Pop Action version, were important for Linde.

The Leser safety valve is a product safety valve. This safety valve product line is manufactured by the manufacturer Leser, a very famous safety valve manufacturer in Germany. The manufacturer of Leser, specializes in only one product, which is a safety valve.

German Leser safety valves are widely used in a variety of industries. This Leser safety valve product is applied to a number of industries such as: in the petroleum, chemical, pharmaceutical, energy, food production, shipbuilding, heating industries...

Leser full valves are produced in a variety of lines and models, with each type, each line will have separate applications. Each line, model will have a different design and structure, and different materials.

Safety valve company Leser is a German manufacturer of safety valves Leser. Safety valve company Leser is the largest safety valve manufacturer in Germany, the largest in Europe, in addition to being one of the world"s leading safety valve manufacturers.

Leser products are manufactured according to different standards, depending on the local supply, Leser"s products will be produced according to different standards. , China for these two markets.

First of all, let"s find out what is a safety valve? Safety valve is a safety device used as a safety device for the working system. The safety valve is not responsible for regulating pressure, it only has the function of releasing pressure in an overpressure situation.

Safety valves are used to ensure the safety of the system, people and the environment. The safety valve is designed to release excess pressure from the system until the pressure returns to normal and in the normal state the safety valve is closed.

Why is there a safety valve symbol? When installing a system, it is necessary to first create a drawing to build up the overall diagram of the system. In the system will install many different equipment, machines, valves. Therefore, each device will be designated with a unique symbol to identify the correct equipment and installation. So what is the symbol of the safety valve, you can observe through the image

The Leser API safety valve product has the ability to work in extreme temperature and pressure conditions, the ability to work in high and low temperatures is very good, the temperature range of this product line it is -268 degrees Celsius to 538 degrees Celsius and the working pressure of the valve can be up to 0,12 bar to 413bar.

This product line is a series of pilot valve operated safety valves. This series of products are used with high capacity applications, this safety valve has the highest discharge capacity in its class.

This valve is as its name suggests, highest discharge capacity, operating pressure up to 96% of set pressure, back pressure up to 90% of set pressure.

Designed with sizes from DN25 to DN200, made from alloy steel materials, WCB, CF8M, SA 352 LCB, etc. The working conditions of this pressure relief valve line are from -48 degrees Celsius to -200 degrees Celsius. 2,5 degrees Celsius, pressure from 426bar to XNUMXbar.

This safety valve product line features a compact design, this safety valve product is often applied to compact applications, with sizes from DN15 to DN40 and a variety of connections, flanges and threads.

Low pressure safety valve products are applied to low pressure dynamic applications, the working pressure level of this product line can only work to the highest pressure of 160bar.

Microbiological safety valve is a pressure reducing valve product line that is applied from the microbiological stainless steel material line with a smooth surface to ensure food safety and hygiene, this safety valve product is often applied to various applications. food, beverages and pharmaceuticals.

Microbiological safety valve products have the following types: 481, 483, 484, 485, 488. Different types with different designs, sizes and capacities, so the application with each type will be different.

This safety valve is manufactured with PTFE liner, PTFE liner design, as known PTFE material has good high temperature working ability, plus good corrosion resistance, thus helping to produce This safety valve product can perfectly be installed in the system with corrosive nature.

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.

We will create high-quality brands and create a monument of Bimetallic Steam Trap, Electric Control Valve, Rubber Lined Diaphragm Valve industry and move forward forever.We improve the level of equipment, but also by implementing fine operations can improve the qualification rate of the Pilot Operated Safety Valve. With the help of our huge network advantages and popular brands, we can reduce costs and expand sales channels. We have established good cooperative relations with domestic and foreign customers with excellent product quality and reasonable prices, and are also well received and praised by customers. The competition of modern enterprises is ultimately the competition of talents, and talents are the root of everything. The products have undergone strict inspection and testing before leaving the factory. The product quality is well received by users and sold all over the world. We have always been committed to the continuous innovation of science and technology and management, so that the enterprise has embarked on a virtuous cycle of large-scale management. We look forward to working with domestic manufacturers to jointly develop overseas markets, seek greater development, and promote Chinese brand culture. Through our accumulation and precipitation over the years, we have developed a complete export plan.

We create excellent PTFE Lined Butterfly Valve, Cryogenic Application Globe Valve, High Pressure Needle Valve, Butterfly Check Valve through agile and superb actions and precise market positioning, leading the industry, gaining a head start and winning benefits. We"re well-known as one of the leading Pilot Operated Safety Valve manufacturers and suppliers in China. Please feel free to wholesale high quality Pilot Operated Safety Valve for sale here from our factory. Good service and punctual delivery are available.

In September, LESER – the largest manufacturer of safety valves in Europe, hosted the Experience Days at the LESER-Kontor in Hamburg as part of its 200th year of existence. With more than 300 participants from 55 nations, the conference was very international and well attended.

The global isolation and safety valve market is expected to grow at a significant pace by 2023. One of the important factors contributing to market growth is the tremendous rise in the oil & gas sector especially in Asia-Pacific countries such as India and China.

Rising trend for the use of customized isolation and safety valves in the market on account of as a lack of product differentiation has been leading to increasing competition among vendors. Thus, local as well as international vendors have been trying to differentiate every product through customized valves which are offered at reasonable prices to the customers. This trend will influence the growth of the industry significantly over the next years.

The focus the Experience Days was on a conference with lectures on current topics of overpressure protection. Under the headlines ‘Plant Safety & Digitalization’, ‘From Market to Product’ and ‘Safety Valve Technology’, topics were presented in three parallel lectures so that each participant could make the appropriate choice.

“This event is the meeting place for the world of overpressure protection,” says Christian Joachim Schult, Head of Marketing at LESER, when asked what the Experience Days are all about.

In the main series of lectures ‘Plant Safety & Digitalization’ speakers from Linde, BASF, an upstream valve consultant from Brazil and experts from LESER presented their experiences and points of view. The aim of this format was to give a holistic view of the overpressure protection and its process steps from engineering to production and application in the plant by the responsible parties themselves.

In the lecture series ‘From Market to Product’, LESER presented various topics around the market, the development and production of safety valves. Especially the talk about the upcoming changes in the ASME regulations ‘An outlook on ASME Sec. XIII’ and the presentation of the LESER production concept ‘Fast deliveries and integrated quality’ aroused the interest of the visitors.

More than 150 participants took advantage of the supplementary factory tour to gain a deeper insight into the modern production facility in Hohenwestedt. In the third lecture series ‘Safety Valve Technology’, LESER presented the current status of safety valve technology to between 30 and 40 interested participants in three sessions. During the entire conference, safety valves were shown in operation in the new LESER Chatroom and in the in-house test lab.

The closing event was a panel discussion on digitization between representatives of Linde, BASF and LESER. The question of what digitization means for the overpressure protection of process plants was discussed. An outlook was given on the changing environment not only for safety valves, but also for employees through digital transformation. It is about “to share the ideas and think about it, if we are on the right way,” commented Carsten Stubenrauch, Head of Plant Design at Linde AG.

Finally, a joint evening event was held with all participants of the Experience Days at the Museum for Hamburg History. The museum is connected to the 200-year existence of LESER by parts of the present stone façade, which were once part of the first LESER building in the ‘Neustädter Fuhlentwiete’ in Hamburg, which no longer exists today. On this occasion, Martin Leser, spokesman for the members, also welcomed the participants and said: “To become 200 years old is not an achievement, but it is an achievement to host the Experience Days” and thus to offer the participants this industry and process-spanning exchange opportunity.

With 950 employees and 130,000 safety valves produced per year, LESER is the largest manufacturer of safety valves in Europe and one of the leading companies in its industry worldwide.

LESER offers spring loaded and pilot operated safety valves for all industrial applications according to the Pressure Equipment Directive and ASME VIII. Major companies in the chemical, oil and gas, petrochemical, energy, technical gases, LNG/LPG, pharmaceutical, food and beverage, shipbuilding and heating and air conditioning industries use LESER safety valves.

LESER safety valves are developed for the international market in Hamburg and manufactured in the modern plant in Hohenwestedt/Germany. In addition, LESER produces safety valves to the same standards in India and China for the local markets. Eight subsidiaries in Europe, America, the Middle East and Asia as well as authorized contacts in over 80 countries guarantee competent customer advice and fast, reliable deliveries.

Today, LESER´s product range comprises a total of 7 product groups with 38 safety valve types. A variety of materials and sizes from DN 10 to DN 400 – 1/2" to 16", provide safe solutions for almost every industrial application. LESER safety valves are approved by a large number of authorities and classification societies (e.g., TÜV, GOSGORTEHNADZOR, PROMATOMNADZOR, ASME/NB, Stoomwezen, Lloyd"s Register, I.S.P.E.S.L., CBPVI-China, DNV, GL), suits any applicable standard and are CЄ marked. This ensures their suitability for service worldwide. Safety valves are made of any kind of material and execution with huge number of options.

Full lift safety valves open rapidly within an overpressure of 5% to the full design lift. They are used in particular for vapours and gases, in applications where the maximum mass flow has to be discharged rapidly. LESER types 441/442 are suitable for almost any industrial application and belong to the best selling spring-loaded flange types of safety valves up to a pressure rating of PN 40/PR #300 worldwide.

API 526 is a purchase specification in which nominal diameters, flange pressure ratings, centre to face dimensions, flow areas, body and spring materials, and their service limits are stipulated for "API safety valves". API safety valves are used worldwide in the petrochemical industry, both on- and off-shore. These applications are characterised by standardised plants, blow-down systems and long pipework sections. The capacities of API safety valves are relatively low in relation to their nominal diameters.

Safety valves with threaded connections are used for handling small and medium mass flows. The LESER threaded connection safety valves are notable for their wide range of set pressures, compact overall dimensions and low weight.

Safety valves which are installed for protection of small mass flow predominantly for liquids to assure a minimization of the media losses. Suitable for thermal relief applications.

Other complimentary product series such as supplementary loading systems, change-over valves and bursting discs which complete the LESER safety valve offering.

Piping between the pilot and main valves is integrated into the cover to prevent amage and freezing Integrated Backflow Preventer as standard part Four week delivery time from the factory Higher capacity than comparable size with extra orifices 20% less installation space than competitors" comparable models Supplementary Loading.

With more than 1,050 employees and 130,000 safety valves produced per year, LESER is the largest manufacturer of safety valves in Europe and one of the leading companies in its industry worldwide.

LESER offers spring loaded and pilot operated safety valves for all industrial applications according to the Pressure Equipment Directive and ASME VIII. Major companies in the chemical, oil and gas, petrochemical, energy, technical gases, LNG/LPG, pharmaceutical, food and beverage, shipbuilding and heating and air conditioning industries use LESER safety valves. LESER safety valves are developed for the international market in Hamburg and manufactured in the modern plant in Hohenwestedt/Germany. In addition, LESER produces safety valves to the same standards in India and China for the local markets. Nine subsidiaries and offices in Europe, America, the Middle East and Asia as well as authorized contacts in over 80 countries guarantee competent customer advice and fast, reliable deliveries.

All vessels or systems must be protected against overpressure to protect the plant and prevent worse in the event of an emergency. Safety valves are safety devices and, in many cases, the last safeguard. LESER offers spring loaded and pilot operated safety valves for all industrial applications. With the help of a total of 1,050 employees and nine subsidiaries worldwide, LESER distributes approximately 130,000 safety valves annually. This makes LESER one of the leading companies in its industry internationally.

LESER safety valves are developed for the international market in Hamburg and manufactured in the modern plant in Hohenwestedt/Germany. In addition, LESER produces safety valves for the local markets in India and China according to the same standards.

In addition to the pure manufacturing of these products, LESER also offers services such as maintenance, repair, overhaul of safety valves as well as replacement delivery within 24h.

LESER: There were some innovations in 2021. For example, after 1.5 years of development, the high-pressure pilot-operated safety valve is almost ready for the market. Tests with these valves were successfully carried out for the first time at up to 610 bar.

In addition, delivery times for safety valves manufactured in Germany will be standardized in the Global Delivery Time Promise in 2021. With a few exceptions, all safety valves can be delivered within two weeks. This is possible due to the Assembly-To-Order (ATO) principle. The necessary individual parts are already available in the extensive ready machine parts stock and assembly begins immediately after receipt of the order. This also ensured the rapid delivery of safety valves to vaccine manufacturers during the current Corona pandemic. For example, LESER managed to send seven safety valves to BioNTech’s production facility in Marburg within four days.

Also, the first safety tests with water took place in 2021 at LESER’s demonstration facility the LESER Chatroom in Hamburg, Germany. From now on, overpressure scenarios can be vividly demonstrated with gas and water to customers.

LESER: Each area and each application must be individually matched to the situation and safeguarded. For this purpose, the system conditions, such as set pressure, temperature, medium or approvals are considered. Therefore, LESER offers nine different product groups and over 2 million configurations.

With the help of the ValveStar® tool developed in-house by LESER, customers can create their individual configuration. In doing so, ValveStar® takes into account all the world’s leading standards and regulations. In addition to calculation and design, the program offers variable, customizable reports for technical documentation.

The largest areas of application for safety valves remain the chemical industry, oil & gas and petrochemicals. But with liquefied natural gas (LNG) and hydrogen, new challenges are emerging. Safety valves must be tailor-made to meet these demands. The protection of ever higher pressures at cryogenic or high temperatures is becoming a prerequisite.

LESER: The requirements for tightness, back pressure, corrosion protection, and plant availability are constantly increasing. Therefore, the demand for individual configurations is increasing and the market is diversifying. Products are also undergoing a transformation. Spring-loaded safety valves currently account for the majority of valves sold. However, a clear trend is foreseeable: the share of pilot-operated safety valves sold is constantly increasing. The advantages of this product group include a more compact design, the possibility of higher operating and back pressures, and lower weight.

LESER: Digitalization is important to LESER. That’s why customers can also access the web services in the field thanks to the LESER Digital ID. For this purpose, a stainless steel tag with a lasered QR code can be ordered. After scanning this code, all important technical data can be viewed at a glance. For safety valves that have already been installed, retrofitting of the Digital ID is of course also possible.

Customers can also carry out the final factory inspection of the goods digitally via LESER Remote Inspection. The LESER inspection attendant wears smart glasses that record his field of vision and transmit the image and sound live. This saves travel expenses, working time or the cost of hiring independent inspectors. This is made possible by LESER’s investment in state-of-the-art inspection equipment and video conferencing technology. This also convinces the monitoring companies and due recertifications by the National Board or the TÜV are also already carried out via remote inspection.

In addition, LESER regularly conducts live online trainings in addition to face-to-face trainings. LESER offers both time-independent online courses and live online trainings. With the help of application examples, cutaway models and real parts, the technology of safety valves is taught in a practical manner.

LESER: Renewable energies are not yet sufficient to meet the world’s energy needs. Liquefied natural gas (LNG) offers a welcome transitional solution to renewable energies. LESER is aware of this trend and is prepared. However, the requirements for such projects are complex, as natural gas production takes place in a wide range of environments – from the Arctic to the desert, but also offshore. That is why LESER guarantees safe operation and tightness of safety valves even at cryogenic temperatures of -164°C and pressures up to 155 bar.

Hydrogen is also an industry with a promising future. LESER made a name for itself early on as a specialist for safety valves in this field. LESER offers its customers reliable solutions for overpressure protection for the generation, transport, use and further processing of hydrogen. A few years before the big trend to hydrogen, LESER successfully carried out a first pilot project for overpressure protection of a hydrogen filling station in the Hafen City in Hamburg.

Digitalization will also play an even greater role in the future. Here, too, LESER is steadily expanding its offerings. LESER already offers the service of online Training Break webinars, Remote Inspection and Digital ID, but there is more to come. Especially the structure and technical data of the installed safety valves are to be digitally retrievable even more easily, comprehensively and clearly in the near future.

LESER uses modern technologies to manufacture safety valves precisely and in high quality. Their safety valves are produced at the Hohenwestedt plant, which is, with a capacity of 130,000 valves per year, the largest production site for safety valves in Europe. In addition, LESER manufactures in Paithan/India and Tianjin/China for the respective local markets.

Prefabrication and assembly are largely carried out on automated production lines. Through this process, LESER ensures the consistently high quality standard of the products, regardless of whether it is a series component or an individual production of your choice.