{"id":3110,"count":5,"description":"<!-- wp:paragraph -->\r\n\r\nBei bestimmten chemischen Prozessen sind die Fl\u00fcssigkeiten in den Rohren oft giftig, radioaktiv und gef\u00e4hrlich. Faltenbalgventile werden verwendet, um das Austreten giftiger Chemikalien in die Atmosph\u00e4re zu verhindern. Der Faltenbalg kann in verschiedenen Materialien wie 316Ti, 321, C276 oder Alloy 625 geliefert werden. Das Geh\u00e4usematerial kann aus allen verf\u00fcgbaren Materialien ausgew\u00e4hlt werden.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nLeakage at various points in pipelines found in chemical plants creates emissions. All such leakage points can be detected using various methods and instruments and should be noted by the plant engineer. Critical leakage points include flanged gasket joints and the Valve\/pump gland packing, etc. Today the chemical process industry is gearing itself towards safer technology for better environmental protection and it has become every process engineer's responsibility to design plants that limit damage to the environment through the prevention of leakage of any toxic chemicals.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_60ba43-05\"} \/-->\r\n\r\n<!-- wp:generateblocks\/button-container {\"uniqueId\":\"6d8495a3\",\"isDynamic\":true,\"blockVersion\":2} -->\r\n<!-- wp:generateblocks\/button {\"uniqueId\":\"3d442e11\",\"hasUrl\":true,\"target\":true,\"backgroundColor\":\"#0366d6\",\"textColor\":\"#ffffff\",\"backgroundColorHover\":\"#222222\",\"textColorHover\":\"#ffffff\",\"paddingTop\":\"15\",\"paddingRight\":\"20\",\"paddingBottom\":\"15\",\"paddingLeft\":\"20\"} -->\r\n<a class=\"gb-button gb-button-3d442e11 gb-button-text\" href=\"mailto:commercial@zecovalve.com\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>PREIS F\u00dcR FALTENBALG-SCHIEBERVENTIL ERHALTEN<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-what-is-bellow-seal-gate-valve\">Was ist ein Balgdichtungs-Schieber?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nEin Faltenbalg-Schieber ist ein speziell entwickeltes Ventil, das sich f\u00fcr den Einsatz in Industrien eignet, die mit gef\u00e4hrlichen Medien arbeiten, wo selbst kleinste Leckagen \u00e4u\u00dferst kritisch sein k\u00f6nnen. Mit dem exponentiellen Wachstum neuer Industrien wie der Chemie- und Nuklearindustrie flie\u00dfen immer mehr brennbare, gef\u00e4hrliche, extrem giftige und toxische Medien durch die Rohrleitungen. Dies birgt ein hohes Risiko von Leckagen, Explosionen und Gesundheitsgefahren. Daher gelten f\u00fcr die in solchen Rohren und Systemen verwendeten Ventile besonders strenge Anforderungen hinsichtlich Leckagen und Abdichtung.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Balgkonstruktion eines balgdichten Schieberventils<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nDie Balgpatrone ist sowohl mit dem Ventildeckel als auch mit dem Ventilschaft verschwei\u00dft. Die Balgpatrone weist eine Anzahl von Windungen auf, die je nach Bewegung des Ventilschafts komprimiert oder ausgedehnt werden. (Wissenschaftlich betrachtet wird der Balg komprimiert, wenn das Ventil ge\u00f6ffnet ist, und ausgedehnt, wenn das Ventil geschlossen ist). Es ist wichtig, die Ventilk\u00f6rper richtig zu installieren. Der Balg kann auf zwei verschiedene Arten an den Ventilen abgedichtet werden. Erstens kann der Balg oben mit dem Ventilschaft und unten mit dem Ventilk\u00f6rper verschwei\u00dft werden. In diesem Fall befindet sich die Prozessfl\u00fcssigkeit im Balg, oder bei der zweiten Methode wird der Balg unten mit dem Ventilschaft und oben mit dem K\u00f6rper verschwei\u00dft. In diesem Fall befindet sich die Prozessfl\u00fcssigkeit im ringf\u00f6rmigen Bereich zwischen dem Ventildeckel und dem Balg (von au\u00dfen).\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nDer Balg ist ein kritisches Bauteil und bildet das Herzst\u00fcck der Balgventile. Um ein Verdrehen des Balgs zu vermeiden, darf das Ventil nur einen Schaft mit linearer Bewegung haben. Dies kann durch eine sogenannte H\u00fclsenmutter am Jochteil der Ventilhaube erreicht werden. Auf der H\u00fclsenmutter ist ein Handrad angebracht, das die Drehbewegung des Handrads effektiv in eine lineare Bewegung des Ventilschafts umwandelt.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Balgtypen von Balgschiebern<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThere are two main types of bellow.. the Forged Bellow and the Welded Bellow. Formed-type bellows are made by rolling a flat sheet (thin wall foil) into a tube which is then longitudinally fusion welded. This tube is subsequently mechanically or hydrostatically formed into a bellow with rounded and widely spaced folds. The welded leaf type bellow is made by welding washer-like plates of thin metal together at both the inner and outer circumference of the washers - like plates. A welded leaf bellow has more folds per unit length as compared to forged bellows. Thus, for the same stroke length, forged bellows are two to three times longer than their welded leaf counterparts.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nBerichten zufolge versagen mechanisch geschmiedete B\u00e4lge an zuf\u00e4lligen Stellen, w\u00e4hrend das geschwei\u00dfte Blatt normalerweise an oder in der N\u00e4he einer Schwei\u00dfnaht versagt. Um eine vollst\u00e4ndige Durchdringung der Balgenden und des Endbundschwei\u00dfens sicherzustellen, ist die Herstellung mittels Mikroplasmaschwei\u00dfen ratsam.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Balgkonstruktion des Balgschiebers<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nDie mehrlagige Balgkonstruktion wird bevorzugt f\u00fcr die Handhabung von Fl\u00fcssigkeiten mit h\u00f6herem Druck verwendet (im Allgemeinen zwei oder drei Lagen der Metallwand). Ein zweilagiger Balg kann seine Druckfestigkeit um 80% bis 100% im Vergleich zu einem einlagigen Balg gleicher Dicke erh\u00f6hen. Alternativ wird die Hubl\u00e4nge reduziert, wenn ein einlagiger Balg mit einer Dicke verwendet wird, die der Druckfestigkeit eines zweilagigen Balgs entspricht. Somit bietet eine mehrlagige Balgkonstruktion einen deutlichen Vorteil gegen\u00fcber einem einlagigen Balg. Es ist klar, dass der Balg einer Metallerm\u00fcdung unterliegt und diese Erm\u00fcdung zu Schwei\u00dffehlern f\u00fchren kann. Die Lebensdauer des Balgs wird neben den \u00fcblichen Parametern wie Fl\u00fcssigkeitstemperatur und -druck auch vom Konstruktionsmaterial, der Fertigungstechnik, der Hubl\u00e4nge und der Hubfrequenz beeinflusst.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Spezifikation des Balgdichtungs-Schieberventils<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Konstruktionsnorm: ASME B16.34<\/li>\r\n \t<li>Baul\u00e4nge: ASME B16.10<\/li>\r\n \t<li>Flanschenden: ASME B16.5<\/li>\r\n \t<li>Pr\u00fcfung und Inspektion: API 598<\/li>\r\n \t<li>Nenngr\u00f6\u00dfe: NPS 1\/2\uff5e16<\/li>\r\n \t<li>Druckbewertung: CL.150\uff5eCL.1500<\/li>\r\n \t<li>Endverbindung: RF\/RTJ\/BW\/SW<\/li>\r\n \t<li>Geh\u00e4usematerial: Guss- und Schmiedeteile (Kohlenstoffstahl, Edelstahl, Duplex, Hastelloy)<\/li>\r\n \t<li>Verkleidungsmaterial: Gem\u00e4\u00df Norm oder Bestellanforderung<\/li>\r\n \t<li>Balgmaterial: 304\/304L\/316\/316L\/Inconel600\/625\/718<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Merkmale des Balgdichtungs-Schieberventils<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Faltenb\u00e4lge mit langer Lebensdauer (3000 Zyklen): F\u00fcr den Einsatz bei hohen Dr\u00fccken und Temperaturen konzipiert und auf Eignung gepr\u00fcft.<\/li>\r\n \t<li>Anschluss f\u00fcr Balg\u00fcberwachung (optional): Zur Leistungs\u00fcberwachung kann ein Stecker an den Raum \u00fcber dem Balg angeschlossen werden.<\/li>\r\n \t<li>Zwei sekund\u00e4re Spindeldichtungen: a) R\u00fccksitz in offener Stellung; b) Graphitpackung.<\/li>\r\n \t<li>\u00dcberlegene Sitzfl\u00e4chen: Die Sitze sind aus einer gepanzerten CoCr-Legierung und der Keil besteht aus einer massiven CoCr-Legierung.<\/li>\r\n \t<li>Jedes Ventil wird gem\u00e4\u00df API 598 getestet.<\/li>\r\n \t<li>Jede Balgbaugruppe wird einem Helium-Lecktest unterzogen, um sicherzustellen, dass keine Leckagen auftreten.<\/li>\r\n \t<li>Nicht rotierende Spindeln verhindern eine Torsion des Balgs.<\/li>\r\n \t<li>Zu den sekund\u00e4ren Spindeldichtungen geh\u00f6ren:<\/li>\r\n \t<li>Vorbau R\u00fccksitz<\/li>\r\n \t<li>API 624 Schaftpackung<\/li>\r\n \t<li>Schmiernippel sorgen f\u00fcr die richtige Schmierung der Schaftbuchse, um ein effizientes \u00d6ffnen und Schlie\u00dfen zu gew\u00e4hrleisten.<\/li>\r\n \t<li>Es stehen mehrere Balgmaterialien zur Verf\u00fcgung: 316Ti, Hastelloy, Inconel, Monel usw.<\/li>\r\n \t<li>Alle B\u00e4lge sind hydrogeformt und bestehen aus mindestens zwei Schichten.<\/li>\r\n \t<li>Verf\u00fcgbar in den Druckklassen 150\u20131500 (alle Geh\u00e4usematerialien verf\u00fcgbar)<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Anwendungen von Balgschiebern<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nDas Hei\u00df\u00f6lsystem, Dampfsystem, Hei\u00df- und Kaltwassersystem usw.\r\n\r\n<!-- \/wp:paragraph -->","link":"https:\/\/zecovalve.com\/de\/tag\/bellows-seal-gate-valve","name":"Faltenbalg-Schieberventil","slug":"bellows-seal-gate-valve","taxonomy":"post_tag","meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bellows Seal Gate Valve - Bellow Seal Gate Valve | ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/de\/tag\/bellows-seal-gate-valve\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bellows Seal Gate Valve - Bellow Seal Gate Valve | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"In particular chemical processes, the fluids in the pipes are often toxic, radioactive, and hazardous. Bellow sealed valves are used to prevent leakage of any toxic chemical into the atmosphere. The bellow can be supplied in different materials like 316Ti, 321, C276, or Alloy 625. Body material can be selected from all available materials.  Leakage at various points in pipelines found in chemical plants creates emissions. All such leakage points can be detected using various methods and instruments and should be noted by the plant engineer. Critical leakage points include flanged gasket joints and the Valve\/pump gland packing, etc. Today the chemical process industry is gearing itself towards safer technology for better environmental protection and it has become every process engineer&#8217;s responsibility to design plants that limit damage to the environment through the prevention of leakage of any toxic chemicals.   GET BELLOW SEAL GATE VALVE PRICE  What is Bellow Seal Gate Valve?  A Bellow Seal Gate Valve is a specially designed valve suitable for use in industries dealing with a hazardous medium where even minute leakages can be extremely critical. With the exponential growth of new industries such as the chemical and nuclear industries, there is a growing abundance of flammable, hazardous, extremely poisonous, and toxic media flowing through the pipelines. This creates a high risk of leakage, explosion, and health hazards. So, the valves used in such pipes and systems have specific stringent leakage and sealing requirements.  Bellow Construction of Bellow Sealed Gate Valve  The bellow cartridge is welded to both the Valve Bonnet and the Valve stem. The bellow cartridge has a number of convolutions and these convolutions become compressed or expanded depending upon the movement of the Valve stem. (Scientifically speaking the bellow gets compressed when the Valve is in the open position and expanded when the Valve is in the closed condition). It is important to properly install the Valve bodies. The bellow can be sealed to the Valves in two different ways. Firstly, the bellow can be welded to the Valve stem at the top and the Valve body at the bottom. In this case, the process fluid is contained inside the bellow, or in the second method the bellow is welded to the Valve stem at the bottom and the body on the top. In this case, the process fluid is contained in the annular region between the Valve Bonnet and bellow (from the outside).  The bellow is a critical component and forms the heart of the bellow seal Valves. To avoid any twisting of the bellow the Valve must have a stem with linear movement only. This can be achieved using a so-called sleeve nut at the Yoke portion of the Valve Bonnet. A handwheel is fitted onto the sleeve-nut which effectively transfers a rotary motion of the handwheel into a linear motion in the Valve stem.  Bellow types of Bellow Seal Gate Valve  There are two main types of bellow.. the Forged Bellow and the Welded Bellow. Formed-type bellows are made by rolling a flat sheet (thin wall foil) into a tube which is then longitudinally fusion welded. This tube is subsequently mechanically or hydrostatically formed into a bellow with rounded and widely spaced folds. The welded leaf type bellow is made by welding washer-like plates of thin metal together at both the inner and outer circumference of the washers &#8211; like plates. A welded leaf bellow has more folds per unit length as compared to forged bellows. Thus, for the same stroke length, forged bellows are two to three times longer than their welded leaf counterparts.  Reportedly, mechanically forged bellows fail at random spots, while the welded leaf usually fails at or near a weld. To ensure full penetration of bellow ends and end coller welding it is advisable to fabricate using micro plasma welding.  Bellow Design of Bellows Seal Gate Valve  The multi-ply bellow design is preferred for handling higher-pressure fluids (generally two or three plies of the metal wall). A two-ply bellow can increase its pressure rating by 80% to 100% as compared to a single ply bellow of the same thickness. Alternatively, if a single ply bellow of a thickness equivalent to a pressure rating of a two-ply bellow is used, the stroke length is reduced. Thus, a multi-ply bellow design offers a distinct advantage over a single ply bellow. It is clear that the bellow is subject to metal fatigue and this fatigue can induce weld failure. The bellow fatigue life is affected by the material of construction, fabrication technique, stroke length, and stroke frequency, in addition to the usual parameters such as fluid temperature and pressure.  Specification of Bellow Seal Gate Valve  Design standard: ASME B16.34 Face to face dimension: ASME B16.10 Flanged ends: ASME B16.5 Test &amp; inspection: API 598 Nominal Size: NPS 1\/2\uff5e16 Pressure Rating: CL.150\uff5eCL.1500 End Connection: RF\/RTJ\/BW\/SW Body Material: Casting &amp; Forging(Carbon Steel, SS, Duplex, Hastelloy) Trim Material: As per standard or order requirement Bellow Material\uff1a304\/304L\/316\/316L\/Inconel600\/625\/718  Features of Bellows Seal Gate Valve  Long cycle life bellows (3000 cycles): Designed and qualification tested for high pressure\/temperature service. Bellows monitoring port (optional): A plug can be connected to the space above the bellows to monitor performance. Two secondary stem seals: a) Backseat in an open position; b) Graphite packing. Superior seating faces: Seats CoCr alloy hardfaced and the wedge is solid CoCr alloy. Each valve is tested per API 598. Every bellow assembly is helium leak-tested to assure zero leakage. Non-rotating stems prevent torsion of bellow. Secondary stem seals include: Stem backseat API 624 stem packing Lubricant fittings to ensure proper lubrication of stem bushing for efficient opening and closing. Multiple bellows materials are available: 316Ti, Hastelloy, Inconel, Monel, etc. All bellows are hydroformed with a minimum of two layers. Available in pressure classes 150-1500 (All body materials available)  Applications of Bellow Sealed Gate Valve  The hot oil system, steam system, hot and cold water system, etc.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/zecovalve.com\/de\/tag\/bellows-seal-gate-valve\" \/>\n<meta property=\"og:site_name\" content=\"ZECO Valve\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/zecovalve.com\/#website\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"ZECO Valve\",\"description\":\"Industrial Ball Valve, Gate Valve and Globe Valve Manufacturer\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/zecovalve.com\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"de\"},{\"@type\":\"CollectionPage\",\"@id\":\"https:\/\/zecovalve.com\/tag\/bellows-seal-gate-valve#webpage\",\"url\":\"https:\/\/zecovalve.com\/tag\/bellows-seal-gate-valve\",\"name\":\"Bellows Seal Gate Valve - Bellow Seal Gate Valve | ZECO Valve\",\"isPartOf\":{\"@id\":\"https:\/\/zecovalve.com\/#website\"},\"breadcrumb\":{\"@id\":\"https:\/\/zecovalve.com\/tag\/bellows-seal-gate-valve#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/zecovalve.com\/tag\/bellows-seal-gate-valve\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/zecovalve.com\/tag\/bellows-seal-gate-valve#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/\",\"url\":\"https:\/\/zecovalve.com\/\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"position\":2,\"item\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/zecovalve.com\/tag\/bellows-seal-gate-valve\",\"url\":\"https:\/\/zecovalve.com\/tag\/bellows-seal-gate-valve\",\"name\":\"Bellows Seal Gate Valve\"}}]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","_links":{"self":[{"href":"https:\/\/zecovalve.com\/de\/wp-json\/wp\/v2\/tags\/3110","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zecovalve.com\/de\/wp-json\/wp\/v2\/tags"}],"about":[{"href":"https:\/\/zecovalve.com\/de\/wp-json\/wp\/v2\/taxonomies\/post_tag"}],"wp:post_type":[{"href":"https:\/\/zecovalve.com\/de\/wp-json\/wp\/v2\/posts?tags=3110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}