Leser products find the right safety valve for your applications in the wide range of leser products. Leser is a headquartered in hamburggermany and maintains a stateoftheartfactory. Applications features and benefits codes and standards. Safety relief valves, series 6000 kunkle valve, safety. Type 447 changeover valves type 310,311 posv pilot operated safety valve. Leser recommends that maintenance and repair be carried out by a. Browse the product range or make an online enquiry leser india, located in mumbai india, provides support and service. Api series 526 compact performance high performance modulate action clean service high efficiency posv. A large number of documents, such as catalogues, brochures or certificates, are available to you. Safety valve maintenance pdf pressure andor vacuum relief valves are used on liquid storage tanks and. With a large quantity of nominal diameters dn, pressure ranges and product options, they have proven themselves as.
The safety valve closes again after a defined pressure reduction. The api product group represents full range of spring loaded safety valves acc. If you meet this brief we would be interested to hear from you. Leser high performance safety valve type 441 442 din. Leser is a mediumsized, familyowned company, backed up by almost 200 years of tradition. Furthermore, all leser high performance safety valves are. Relisafe hpsf high pressure sample filter relisafehpsf. Wide hex on valve nozzle provides clearance for easy installation. This ensures dimensional conformity and a high surface quality. Series 441 protection of chemical processes and equipment e. We are currently seeking self motivated, talented individuals with a minimum of 5 years experience in valve applications. Safety valves from leser india reliably protect industrial applications against overpressure.
See the leser engineering manual for more information. Maintenance the maintenance manual leser the safety. Design in accordance with international standard iso 41261 safety valves. With a large quantity of nominal diameters dn, pressure ranges and product options, they have proven themselves as a universal safety valve for many applications. With a large quantity of valve sizes, pressure ranges and product options, they have proven themselves as. All individual parts are manufactured on modern machining centres and cnc lathes 4. Leser high performance flanged safety relief valves cvi solutions. Leser compact performance safety valves cover a large. Installation, operation and maintenance of groth pressurevacuum relief valves. Pdf forbes marshall safety relief valve fmsrv quick to. Crosby jseries direct spring pressure relief valves series josejltjose product overview series jose and jltjose are the standard conventional relief valve designs for applications when the discharge is to the atmosphere or to a low pressure. Safety valves according to api 526 with standardized capacities and dimensions.
Leser api safety valves of type 526 are designed, marked, produced and approved according to the requirements of the following regulations. Flanged safety relief valves spring loaded contents chapterpage materials. High efficiency pilotoperated safety valve leser gmbh. Engineering the technical manual leser the safety valve. How to select the right clean service safety valve. Since reliability is directly related to the complexity of the device, it is important that. Leser usa leser safety relief valves product list advance. Download the file of the desired product group and find all the information in one pdf. With a large quantity of valve sizes, pressure ranges and product options, they have proven themselves as a universal safety valve for many applications. The series 433 standard safety relief valves have component. Heaton valves africa uses lesers state of the art valve sizing software program valvestart for valve selection and has its own test rigs for valve setting and calibration. Leser safety valves for every industrial application. Even at that early date, leser products were working for the safety of man and the environment. Leser modulate action safety valves of type 431 433 are designed, marked, produced and approved.
Safety relief valves series 437 series 459 the safety valve. Flanged steel pressure relief valves according to api 526 type 526 safety valves with threaded connections type 437,459462 safety valves for sanitaryclean service type 483,484,485,488 safety valves for critical service conditions type 447 changeover valves type 310,311 posv pilot operated. Maintenance the maintenance manual leser the safety valve. Flanged safety valves with especially high capacity for their size. The valve should be inspected for wear as part of a regular system maintenance programme. Cryogenic burns can occur if the valve is handled during or after the valve has operated. Leser compact performance safety valves of type 459 are designed, marked, produced and approved according to the requirements of the following regulations. You will find detailed information on the following topics. The outlet side of the safety valve is open to atmospheric pressure. Back pressure the pressure that exists at the outlet of a pressure relief device as a result of the pressure in the discharge system.
Kunkle series 6000 safety valves safety and relief products features oring seats available for exceptional leakfree performance, reduced maintenance cost, multiple cycles with tight shutoff and improved seating integrity. Compact performance catalog safety relief valves series 437 series 459. Click on engineering and you will find all the information in one pdf. Maintenance instructions of the manufacturer typically include critical dimensions of these. All relevant international standards are observed in its design and dimensioning. Leser is the largest manufacturer of safety valves in europe and a market leader worldwide. Typical applications for leser high performance safety valves are. Full flanged safety valves with flanged connections safety valves from the high performance product group offer especially high capacity for their size. A pressure relief valve is a safety device designed to protect a pressurized vessel or system during an over. Leser high performance safety valves are the ultimate solution for all industrial applications for steam, gas and liquid. Learn interesting facts and information on safety valves. Maintenance maintenance handbook for leser product group. 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 remaining to prevent a catastrophic failure.
Their safety valves are used by leading companies in industries such as chemical, petrochemical, industrial gases, oil and gas production, and machine building, as well as the food and pharmaceutical industry. Your contact careers language german products industries. In addition, you can watch maintenance videos for the pilot operated safety valve posv. Safety relief valves series 437 series 459 compact performance extended catalog.
The core business is the safety of pressurized facilities. The extensive collection offers you information for almost all areas around the safety valve and is aimed at both occasional and advanced users. Wear safety glasses and gloves during any installation or operation of the valve. There are either manual as well as pneumatic lifting devices available. Since the 1980s leser has been the number one supplier for safety valves in the world and strengthens this position each year. Safety relief valves series 437 series 459 relevant solutions. Safety valves from leser india for industrial applications. The nanotightness exceeds the requirements for func. Leser high performance safety valves of type 441, 442 din are designed, marked, produced and approved according to the requirements of the following regulations. Furthermore, all leser compact performance safety valves are designed, marked, produced and approved according to the.
Flanged safety valves, series 441442 and 441 xxl the safety valve. In 1885 the company developed its first safety valve for the protection of steam boilers. However, some of the older designs show potential for improvement in areas like external tubing, capacity and delivery times. Products we carry by valve type safety valve with flanged connections.
Safety valves of the varivent series have got gas sealed lifting devices of the valve disk. Leser high efficiency safety valves of type 811 are designed, marked, produced and approved according to the requirements of the following regulations. A safety valve is normally used with compr sib lfud. Their safety valves are developed for the international market at our headquarters in hamburg. Call us tollfree 18008758716 contact us directly via email for specific quanties and questions regarding leser brand safety valves. American petroleum institute prv relief valve, safety valve, safety relief valve. Leser specialises in fast production and delivery of bespoke valves through its ontime round the clock order service. Leser modulate action safety valves can be used for all. The spring3 is the key component ensuring the correct function of the safety valve. Browse the product range or make an online enquiry leser india, located in mumbai. Leser compact performance safety valves this product group stands for compact dimensions with high capacity relative to the safety valve size great variety of threaded and flanged connections wide pressure range leser. Safety relief valves, series 6000 kunkle valve, safety and. This design makes enables the lifting of the valve disk during pipe cleaning to clean all inner parts including seat area and oring.
Pressure relief valve engineering handbook crosby valve inc. Engineering the technical manual from leser download. Relief valve a pressure relief valve characterized by gradual opening or closing generally proportional to the increase or decrease in pressure. Valves must only be used in a circuit protected by suitable equipment. Leser sells, produces and develops safety valve for all industrial applications. From recommendations for your oem or plant maintenance safety valve. Leser recommends that maintenance and repair be carried out by a larc leser authorized repair center. In case of fulllift characteristic the safety valve opens abruptly over the full lift and discharges the whole mass flow which is necessary to prevent further increase of the pressure. Since the 1970s leser has specialized only in safety valves. Pressure relief valve engineering handbook chapter 2 terminology safety valve a pressure relief valve characterized by rapid opening or closing and normally used to relieve compressible fluids. Safety valve a springloaded pressure relief valve actuated by the static pressure upstream of the valve and characterized by rapid opening or pop action. Safety valve with medium capacities and a large proportional opening range.