Seetru are manufacturers of safety relief valves, special purpose ancillary valves and liquid level contents gauges. Leser critical service relief valves cvi solutions. Engineering the technical manual leser the safety valve. Leser is a headquartered in hamburggermany and maintains a stateoftheartfactory. Leser is a mediumsized, familyowned company, backed up by almost 200 years of tradition. Kg at a glance en created by anonymous april 5, 2018 category. Crosby jseries direct spring pressure relief valves series josejltjose product overview series jose and jltjose are the standard conventional relief valve designs for. The company started in germany in 1818 as a brass foundry and developed a product portfolio of components of mechanical equipment and machines during the industrial revolution. Flanged safety relief valves integral cast support brackets for safe handling of the valves api and heavy safety valves. Lesers critical service valves are spring loaded safety relief valves developed in close cooperation with plant engineers and service specialists to protect highly corrosive processes and installations against. Leser api flanged safety relief valves type 526 westech.
Click on engineering and you will find all the information in one pdf. Applications safety valve and valves for lng, cryogenic. Leser safety relief valves have been optimized, in close cooperation with plant engineers and service specialists, simplifying design with fewer components for less down time, fewer spare parts and lower. Typical values for the blowdown are 4% to 15% for steam and gas and 20% to unlimited for liquids. The extensive collection offers you information for almost all areas around the safety valve and is aimed at both occasional and advanced users. Leser sells, produces and develops safety valve for all industrial applications. Compared to standard full nozzle safety relief valves with high alloy trim, type 447 provides for a. Applications safety valve and valves for lng, cryogenic and. Lower total cost of ownership with leser valve maintenance and repair play a significant role in the total cost of ownership throughout the life cycle of a safety relief valve. The safety relief valve srv is considered the last silent sentinel to protect from accidents which can cost life, property and important economic losses. We are currently seeking self motivated, talented individuals with a minimum of 5 years experience in valve applications. Since reliability is directly related to the complexity of the device, it is important that. Nov 29, 2012 introduction to leser safety relief valves. The valve s relief of elevated liquid, gas, or steam pressures prevents damage to the system.
Safety relief valves, pressure relief valve, supplier. Typical applications for leser high performance safety valves are. In addition the leser test labs are accepted as a prufstelle of the tuv. Safety relief valve 441, 442 ansi 128 safety relief valve 441, 442 xxl safety relief valve 441, 442 din 2 safety relief valve 444 ansi 4 leser original spare parts kits series 441, 442 dinansi 5 flange drillings series 441 6 flange facings series 441 7 safety relief valve series 457, 458 8 spare parts series 441 140. Leser can upgrade materials without notice for nozzle and disc machined from the bar a short lead time is possible.
This ensures their suitability for service worldwide. Our products are designed for a wide range of applications seetru limited was founded in 1949 with the aim of producing the finest liquid level gauges so customers could see the true level even under the most severe conditions. Leser valve and parts inventory heritage global partners. The valve opens when the system pressure force becomes greater than the closing force of the spring. Signs and symbols, flange drillings and facings 0007 how to use. Apr 26, 2010 design and function of lesers new pilot operated safety valve modulate action version.
With almost 200 years of experience, leser ranks among the pioneers of mechanical engineering in germany. Our products are designed for a wide range of applications seetru limited was. Pressure valves according to api 526 with standardized capacities and dimensions. Learn interesting facts and information on safety valves. Engineering is the technical manual for safety valves from leser. Safety relief valves series 437 series 459 the safety valve. Leser safety relief valves have been optimized, in close cooperation with plant engineers and service specialists, simplifying design with fewer components for less down time, fewer spare parts and lower maintenance costs. Leser high performance safety valves are the ultimate solution for all industrial applications for steam, gas and liquid. Relief valves are designed to open at a preset pressure or temperature level and relieve the system when it has exceeded the desired level. Type 526 flanged safety relief valves spring loaded contents chapterpage materials. Leser safety valves are approved by a large number of authorities and classification societies e. Leser safety relief valves leser safety relief valves, proquip 4 mark rd. Under normal system operating pressure, the valve will remain closed as the spring force is greater than the inlet system pressure. Safety relief valve 431, 433 164 leser original spare parts kits series 433 165 available options series 433 166 best availability 167 changeover valve 330 compact, 320 flow 168 changeover valve 310.
We offer a wide selection of relief valves for any application. Leser api 526 series relief valve leser type 821 pilot operated relief valve. A statistical analysis shows that the pressure relief. Leser safety valves are approved by a large number of. Item component remarks type 4593 type 4592 type 4594. Leser has the lowest total cost of ownership due to competitive initial valve pricing combined with very attractive parts pricing. Under normal system operating pressure, the valve will remain closed as the spring force is greater than the inlet system pressure force. Safety relief valves series 437 series 459 relevant. Leser usa leser safety relief valves product list advance. Valve finder 2 applications, general design features 4 leser type page type 437, 438, 439 7 type 437 materials available designs 8 available designs materials 9 article numbers 10 dimensions and weights metric units threaded connection 11 metric units flanged connection 12 pressure temperature ratings metric units. It reduces the excess pressure with safe and sound manner. Blowdown is considered as the difference between actual popping pressure of a pressure relief valve and actual reseating pressure expressed as a percentage of set pressure or in pressure units. Er5100 series consists of the er5000 series controller and a 444000 series pressure reducing regulator integrated together.
Design and function of lesers new pilot operated safety valve modulate action version. Now every safety valve is delivered within 4 daysincluding the. Darshan valves manufacturer and exporter of differential safety relief valves like leser type. Capacity sheets 0009 leser effective orifice leo sg 0011 leser effective orifice leo l 0012 sour gas service 00 type 441, 442 ansi 0201. The core business is the safety of pressurized facilities. The valves relief of elevated liquid, gas, or steam pressures. Lower total cost of ownership with leser duncan co.
If you meet this brief we would be interested to hear from you. Pressure systems leser api 526 series relief valve. Metric values using the following conversion factors. For leser, only 5% of its annual revenue results from spare parts. Safety relief valves use a spring force to hold a disc against a nozzle. Safety valves for food, beverage and pharmaceutical applications. Once a condition occurs that causes the pressure in a system or vessel to increase to a dangerous level, the pressure relief valve may be the only device. C, kenilworth, nj 07033 9732530100 is a leading sales representative distributor of process control products and. Inlet pressures are up to 4500 psig 310 bar with two different outlet ranges of 400 and 900 psig 27. Lesers critical service valves are spring loaded safety relief valves developed in close cooperation with plant engineers and service specialists to protect highly corrosive processes and installations against inadmissible overpressure. Safety valves and its application requirements rev2. The extensive collection offers you information for almost all areas around the safety valve and is aimed at both occasional and advanced. Leser safety valve 2012 price guide us cvi solutions glossar leser option codes. Water heater pressure relief valve prevent water heater explosion replace a relief valve duration.