{"id":2227,"date":"2021-12-28T10:06:16","date_gmt":"2021-12-28T10:06:16","guid":{"rendered":"https:\/\/zecovalve.com\/operation-of-the-spirax-sarco-25p-pressure-reducing-valve-zeco-valve-blog.html"},"modified":"2022-08-08T13:57:05","modified_gmt":"2022-08-08T13:57:05","slug":"operation-of-the-spirax-sarco-25p-pressure-reducing-valve-zeco-valve-blog","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/de\/operation-of-the-spirax-sarco-25p-pressure-reducing-valve-zeco-valve-blog.html","title":{"rendered":"Spirax-Sarco 25P Druckminderventil | Zeco-Ventil"},"content":{"rendered":"<p>Cougar USA ist der Spirax Sarco-Vertreter im Raum Houston. Spirax Sarco bietet eine breite Palette an Fl\u00fcssigkeitskontrollprodukten, technischen Paketen, Fachwissen zu Dampfsystemen und Standortdienstleistungen f\u00fcr seinen vielf\u00e4ltigen Kundenkreis von \u00fcber 100.000 industriellen und institutionellen Kunden. Das Unternehmen hilft seinen Kunden, die Produktionskapazit\u00e4t zu optimieren, Energiekosten und Emissionen zu senken, die Produktqualit\u00e4t zu verbessern und die Sicherheit ihrer Betriebsabl\u00e4ufe zu erh\u00f6hen. Spirax Sarco verf\u00fcgt \u00fcber strategisch verteilte Produktionsst\u00e4tten auf der ganzen Welt, darunter eine in der N\u00e4he von Houston in Pasadena, Texas.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">Was ist ein Spirax Sarco 25p?<\/h2>\n\n\n\n<p>Die Regler der Spirax Sarco 25-Serie sind eine vielseitige Familie selbstt\u00e4tiger Druckregler mit Steuerpiloten und austauschbaren Hauptventilen f\u00fcr die meisten Dampfanwendungen. Zu den Optionen geh\u00f6ren Druckreduzierung (25P), kombinierte Druckreduzierung mit elektrischer Ein-\/Aus-\u00dcbersteuerung (25PE), Druckreduzierung mit luftbelastetem Piloten (25PA) und als Gegendruckregler (25BP). Die 25-Serie wurde mit Blick auf den Benutzer entwickelt und bietet Vielseitigkeit und Einfachheit. Farbcodierte, austauschbare Federn erm\u00f6glichen eine schnelle und einfache \u00c4nderung des nachgeschalteten Druckbereichs, sodass das Ventil nicht isoliert oder die Dampfleitung unterbrochen werden muss.<\/p>\n\n\n\n<p>Spirax Sarco <a href=\"https:\/\/zecovalve.com\/de\/water-pressure-reducing-valve-manufacturer-zeco-valve.html\/\" data-internallinksmanager029f6b8e52c=\"8\" title=\"Druckreduzierventil\" target=\"_blank\" rel=\"noopener\">Druckreduzierventil<\/a>, Pilotgesteuert, 3\/4 Zoll Nennweite, NPT, 250 psi, 450 Grad F, Geh\u00e4use aus Gusseisen, Medium: Dampf<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Komponenten des Spirax Sarco 25p<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Material des Geh\u00e4uses<\/strong><strong><\/strong><\/td><td>Gusseisen<\/td><\/tr><tr><td><strong>Endstil<\/strong><strong><\/strong><\/td><td>NVV<\/td><\/tr><tr><td><strong>Hersteller<\/strong><strong><\/strong><\/td><td>Spirax-Sarco Inc<\/td><\/tr><tr><td><strong>Hersteller #<\/strong><strong><\/strong><\/td><td>55223<\/td><\/tr><tr><td><strong>Medien<\/strong><strong><\/strong><\/td><td>DAMPF<\/td><\/tr><tr><td><strong>Normale Gr\u00f6\u00dfe<\/strong><strong><\/strong><\/td><td>3\/4 Zoll<\/td><\/tr><tr><td><strong>Druckstufe<\/strong><strong><\/strong><\/td><td>250 psi<\/td><\/tr><tr><td><strong>Temperaturbereich<\/strong><strong><\/strong><\/td><td>450 \u00b0F<\/td><\/tr><tr><td><strong>Typ<\/strong><strong><\/strong><\/td><td>Pilotgesteuert<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-operation-of-the-spirax-sarco-25p-pressure-reducing-valve\">Funktionsweise des Druckminderventils Spirax-Sarco 25P<\/h2>\n\n\n\n<p>Das pilotgesteuerte Druckminderventil der Serie 25P von Spirax-Sarco wird h\u00e4ufig in Dampfsystemen eingesetzt. Eine genaue und stabile Druckregelung ist unabh\u00e4ngig von einer \u00c4nderung des Dampfdrucks vor oder einer Schwankung der Last nach dem Druck m\u00f6glich.<\/p>\n\n\n\n<p>Das pilotgesteuerte Druckminderventil der Serie 25P von Spirax-Sarco ist einzigartig, da ein oder mehrere Pilotventile am selben Ventil installiert oder ausgetauscht werden k\u00f6nnen. Es ist nicht nur stabil und reduziert den Druck, sondern kann auch die Temperatur, den Vordruck oder den Fernschalter regeln.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><b>Betrieb<\/b><\/h3>\n\n\n\n<p>In den Normalstellungen vor dem Start ist das Hauptventil geschlossen und das Pilotventil wird durch Federkraft oder Luftdruck offen gehalten.<\/p>\n\n\n\n<p>Eintretender Dampf str\u00f6mt durch das Steuerventil in die Hauptmembrankammer und auch durch die Steuer\u00f6ffnung hinaus. Wenn der Durchfluss durch das Steuerventil den Durchfluss durch die \u00d6ffnung \u00fcbersteigt, steigt der Steuerdruck in der Membrankammer und \u00f6ffnet das Hauptventil. Wenn Dampf durch das Hauptventil str\u00f6mt, wird der Anstieg des nachgeschalteten Drucks durch die Drucksensorleitung zur Unterseite der Druckmembran zur\u00fcckgef\u00fchrt.&nbsp;<\/p>\n\n\n\n<p>Wenn die Kraft unter dieser Membran die Druckkraft der dar\u00fcber liegenden Feder ausgleicht, drosselt das Steuerventil. Der in der Hauptmembrankammer aufrechterhaltene Steuerdruck positioniert das Hauptventil so, dass gerade genug Dampf f\u00fcr den gew\u00fcnschten Lieferdruck geliefert wird. Durch Einstellen des Feder- oder Luftdrucks \u00fcber der Druckmembran \u00e4ndert sich der nachgeschaltete Drucksollwert.&nbsp;<\/p>\n\n\n\n<p>Wenn kein Dampf mehr ben\u00f6tigt wird, steigt der Druck in der Sensorleitung an, wodurch der Druckpilot geschlossen wird und der Steuerdruck durch die Steuer\u00f6ffnung zur\u00fcckstr\u00f6mt. Dadurch kann das Hauptventil den gew\u00fcnschten reduzierten Druck halten und kann f\u00fcr eine Sackgassenabsperrung dicht schlie\u00dfen.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vorteile von Spirax Sarco 25p<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Die Kombination von Piloten erm\u00f6glicht verschiedene Steuerungsarten in einem Regler<\/li><li>Patentierte selbstreinigende F\u00fchrung f\u00fcr langen, st\u00f6rungsfreien Betrieb<\/li><li>Dauergepr\u00fcfte Membrankonstruktion ohne Kolben, um die Gefahr des Feststeckens zu vermeiden<\/li><li>Innenteile aus Edelstahl f\u00fcr hervorragende Haltbarkeit und Korrosionsbest\u00e4ndigkeit<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><b><strong>Typische Installation von<\/strong><\/b> Spirax Sarco 25p<\/h2>\n\n\n\n<p>Der Regler sollte in einer horizontalen Leitung mit geeigneten Bypass- und Absperrventilen installiert werden. Vor dem Regler sollte ein Kondensatableiter installiert werden, um zu verhindern, dass Kondensat in den Regler gelangt. Sowohl der Ableiter als auch der Regler sollten mit einem Sieb gesch\u00fctzt werden. Die Drucksensorleitung sollte in einem geraden Abschnitt der nachgeschalteten Rohrleitung liegen, der mindestens 10 Rohrdurchmesser vom n\u00e4chsten Anschlussst\u00fcck entfernt ist. Vollst\u00e4ndige Installationsanweisungen finden Sie in IMI3.000<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Wartung von Spirax Sarco 25p<\/h2>\n\n\n\n<p>Vollst\u00e4ndige Installations- und Wartungsanweisungen finden Sie in IMI 3.000, eine Kopie davon wird mit jedem Regler mitgeliefert. Verf\u00fcgbare Ersatzteile sind in TIS 3.027 und 3.0271 aufgef\u00fchrt.<\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 id=\"h-related-tags\">Verwandte Tags:<\/h2>\n<!-- \/Andy:h-related-tags -->\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/\">ZECO-Ventil<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/difference-between-gate-valves-and-ball-valves.html\/\">Schieberventil vs. Kugelhahn<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/advantages-and-disadvantages-of-globe-valves.html\/\">Was ist ein Durchgangsventil?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/gate-valve-problems.html\/\">Reparatur von Absperrschiebern<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/what-is-an-axial-flow-silent-check-valve.html\/\">Was ist ein Axialr\u00fcckschlagventil<\/a>\n\n<\/div>\n\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/produkt\/manual-gate-valve\/\">Hersteller von manuell bet\u00e4tigten Absperrschiebern<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/the-function-of-globe-valve-in-pipeline-system.html\/\">Was sind Absperrventile?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/difference-between-gate-valve-and-butterfly-valve.html\/\">Unterschied zwischen Absperrschieber und Absperrklappe<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/china-gate-valves-suppliersnon-rising-stem-gate-valvesks-gate-valves.html\/\">Was ist ein Absperrschieber?<\/a>\n\n<\/div>\n\n\n\n<div class=\"re_main\">\n<a href=\"https:\/\/zecovalve.com\/de\/tag\/shanghai-pressure-reducing-valve-factory\/\">Shanghai Druckminderventilfabrik<\/a>\n\n<\/div>\n\n\n\n<p>Zehn Artikel davor und danach<\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/negative-rate-belleville-disc-spring-for-pressure-sensing-zeco-valve-blog.html\/\">Tellerfeder mit negativer Federrate zur Druckmessung | Zeco Valve Blog<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/guided-wave-radar-level-sensing-zeco-valve-blog.html\/\">F\u00fcllstandsmessung mit gef\u00fchrtem Radar | Zeco Valve Blog<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/the-operation-of-bimetallic-steam-traps-zeco-valve-blog.html\/\">Funktionsweise von Bimetall-Kondensatableitern | Zeco Valve Blog<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/selecting-a-stainless-steel-globe-or-gate-valve-zeco-valve-blog.html\/\">Auswahl eines Edelstahl-Kugel- oder Schieberventils | Zeco Valve Blog<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/high-performance-butterfly-valves-for-on-off-and-throttling-service-zeco-valve-blog.html\/\">Hochleistungs-Absperrklappen f\u00fcr Ein\/Aus- und Drosselbetrieb | Zeco Valve Blog<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/pressure-and-temperature-switches-glossary-important-terms-to-know-part-1-zeco-valve-blog.html\/\">Glossar zu Druck- und Temperaturschaltern \u2013 Wichtige Begriffe, die Sie kennen sollten, Teil 1 | Zeco Valve Blog<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/pressure-and-temperature-switches-glossary-important-terms-to-know-part-2-zeco-valve-blog.html\/\">Glossar zu Druck- und Temperaturschaltern \u2013 Wichtige Begriffe, die Sie kennen sollten, Teil 2 | Zeco Valve Blog<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/the-sliding-gate-control-valve-zeco-valve-blog.html\/\">Das Schieber-Steuerventil | Zeco Valve Blog<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/happy-holidays-and-happy-new-year-from-zeco-valve-zeco-valve-blog.html\/\">Sch\u00f6ne Feiertage und ein frohes neues Jahr w\u00fcnscht Zeco Valve | Zeco Valve Blog<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/zecovalve.com\/de\/heat-exchangers-for-liquid-gas-vaporization-zeco-valve-blog.html\/\">W\u00e4rmetauscher f\u00fcr die Fl\u00fcssigkeits-Gas-Verdampfung | Zeco Valve Blog<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Cougar USA ist der Spirax Sarco-Vertreter im Raum Houston. Spirax Sarco bietet eine breite Palette an Fl\u00fcssigkeitskontrollprodukten, technischen Paketen, \u2026 <a title=\"Spirax-Sarco 25P Druckminderventil | Zeco-Ventil\" class=\"read-more\" href=\"https:\/\/zecovalve.com\/de\/operation-of-the-spirax-sarco-25p-pressure-reducing-valve-zeco-valve-blog.html\" aria-label=\"Mehr zu Spirax-Sarco 25P Druckminderventil | Zeco Valve\">Weiterlesen ...<\/a><\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","kt_blocks_editor_width":"","footnotes":""},"categories":[2368],"tags":[2651,2369,2370,2372,2373,2371],"class_list":["post-2227","post","type-post","status-publish","format-standard","hentry","category-control-valve","tag-shanghai-pressure-reducing-valve-factory","tag-spirax-sarco-25p","tag-spirax-sarco-25p-pressure-reducing-valve","tag-spirax-sarco-pressure-reducing-valve","tag-spirax-sarco-prv","tag-spirax-sarco-valves","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"featured_image_src_large":false,"author_info":{"display_name":"Jerry","author_link":"https:\/\/zecovalve.com\/de\/author\/jerry"},"comment_info":0,"category_info":[{"term_id":2368,"name":"Control Valve","slug":"control-valve","term_group":0,"term_taxonomy_id":2368,"taxonomy":"category","description":"","parent":0,"count":12,"filter":"raw","cat_ID":2368,"category_count":12,"category_description":"","cat_name":"Control Valve","category_nicename":"control-valve","category_parent":0}],"tag_info":[{"term_id":2651,"name":"Shanghai Pressure Reducing Valve Factory","slug":"shanghai-pressure-reducing-valve-factory","term_group":0,"term_taxonomy_id":2651,"taxonomy":"post_tag","description":"<!-- wp:heading -->\r\n<h2 id=\"h-what-is-a-pressure-reducing-valve\">What is a Pressure Reducing Valve?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nA Pressure Reducing Valve is a self-operating valve used to control excess pressure to give a constant reduced pressure to a system. The pressure reduction regulator is another name for this valve. The primary function of pressure-reducing valves is to convert increased incoming pressure into lower outgoing pressure. They are widely utilized in the water, steam, and oil and gas sectors. So, Pressure Reducing Valve manufacturers define the valve as a self-acting automated control valve that reduces a greater uncontrolled intake pressure to a constant, lowered output pressure independent of upstream water pressure variations. We will learn about the working, different types, uses, and benefits of pressure-reducing valves in this article.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>How does a Pressure Reducing Valve work?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nWhen it does this under both flow and no-flow conditions, the type of control is known as \u2018drop tight\u2019. ZECO pressure reducing valves use a balanced spring and diaphragm to control the downstream pressure. This \u2018drop tight\u2019 feature is one of the most important criteria for any pressure reducing valves, as this stops the pressure from \u2018creeping\u2019 \u2013 a term which is used when an increase in the downstream pressure occurs under no flow conditions. A valve which will allow this \u2018creep\u2019 cannot be known as \u2018drop tight\u2019 or in fact a true pressure reducing valve, as it will eventually allow the pressure to creep up to equal the upstream pressure, which can cause significant problems and essentially negates the point of using a pressure reducing valve in the first place.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe diaphragm effectively separates all of the water contact parts and the pressure from the water supply away from the control spring and associated mechanism. The body is then protected from debris by the use of a stainless-steel strainer.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nUnder no flow conditions the downstream pressure puts back-pressure on the seat and diaphragm of the valve, which in turn overcomes the spring pressure. This means the seat moves up, forcing it to seal against the diaphragm, therefore not allowing the downstream pressure to increase.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nUnder flow conditions the back pressure against the seat is reduced thus allowing the seat to open and water to flow through the valve.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>Advantages of Pressure Reducing Valves<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:list -->\r\n<ul>\r\n \t<li>Direct acting pressure reducing valve is suitable for general liquids and gases.<\/li>\r\n \t<li>WRAS &amp; ACS Certifications for Drinking Water and Beverage application.<\/li>\r\n \t<li>Suitable for process automation control and many general purpose applications.<\/li>\r\n \t<li>Convenient in-style mounts either horizontally or vertically.<\/li>\r\n \t<li>Wide range capacity to handle local water supply pressure and adjust to specific pump specifications.<\/li>\r\n \t<li>Adjusting nut allows easy calibrated pressure adjustment.<\/li>\r\n \t<li>Stainless Steel 316 lower body and upper body construction for durability and compatibility.<\/li>\r\n \t<li>The balanced piston design provides a constant outlet pressure even when the inlet pressure is unstable. The supplied pressure gauge indicates the outlet pressure.<\/li>\r\n \t<li>Easy maintenance, maintenance kits are available upon request.<\/li>\r\n<\/ul>\r\n<!-- \/wp:list -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nZECO Valve is the most professional Shanghai Pressure Reducing Valve Factory since 1991. If any inquiry, please contact ZECO.\r\n\r\n<!-- \/wp:paragraph -->","parent":0,"count":4,"filter":"raw"},{"term_id":2369,"name":"spirax sarco 25p","slug":"spirax-sarco-25p","term_group":0,"term_taxonomy_id":2369,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2370,"name":"spirax sarco 25p pressure reducing valve","slug":"spirax-sarco-25p-pressure-reducing-valve","term_group":0,"term_taxonomy_id":2370,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2372,"name":"spirax sarco pressure reducing valve","slug":"spirax-sarco-pressure-reducing-valve","term_group":0,"term_taxonomy_id":2372,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":2373,"name":"Spirax Sarco PRV","slug":"spirax-sarco-prv","term_group":0,"term_taxonomy_id":2373,"taxonomy":"post_tag","description":"<!-- wp:kadence\/tableofcontents {\"uniqueID\":\"_1cedd7-56\"} \/-->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"h-what-is-spirax-sarco-houston\">What is Spirax Sarco Houston?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nCougar USA is the Spirax Sarco rep in the Houston area. Spirax Sarco provides a broad range of fluid-control products, engineered packages, steam systems expertise, and site services for its diverse range of over 100,000 industrial and institutional customers. They help their customers optimize production capacity, reduce energy costs and emissions, improve product quality and enhance the safety of their operations. Spirax Sarco has strategically located manufacturing plants around the world including one near Houston in Pasadena, Texas.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>What is Spirax Sarco PRV?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nWell-designed steam systems produce clean, dry steam for delivery at high pressure \u2014 the best-quality steam at the lowest cost. Lower-pressure steam is usually needed at the point of use. Effective control demands an automatic valve that can reduce steam pressure accurately, reliably, and at a cost to suit the application. Like direct-acting pressure-reducing valves, these valves are self-powered. The pilot operation provides accurate control under large load-change conditions. Available in iron, cast steel, and stainless steel in sizes from 1\/2\u2033 to 8\u2033.\r\n\r\n<!-- \/wp:paragraph -->\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>GET SPIRAX SARCO PRV PRICE<\/strong><\/a>\r\n<!-- \/wp:generateblocks\/button -->\r\n<!-- \/wp:generateblocks\/button-container -->\r\n\r\n<!-- wp:heading -->\r\n<h2>How does the 25P Pilot Regulator Works?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe Spirax Sarco pilot-operated pressure regulator works by balancing the downstream pressure against a control spring. This modulates a small valve head over a seat (the pilot). The flow through this seat is directed, in turn, to the main valve diaphragm, where it\r\nmodulates the main valve.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nIn order to achieve the most stable operating condition, an external pressure sensing line must be used. This allows downstream pressure to feedback to the underside of the pilot diaphragm, balancing the spring force, and causing the pilot valve to throttle. This settles the pilot valve, allowing a constant flow across the main diaphragm. This ensures that the main valve is also settled to give a stable downstream pressure.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nWhen downstream pressure rises, the pilot valve closes, and pressure is released from the main valve diaphragm through the control orifice, to close the main valve. Any variations in load or pressure will immediately be sensed on the pilot diaphragm, which will act to adjust the position of the main valve, ensuring a constant downstream pressure.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2>How do Direct Operated Regulators work?<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nOn start-up, upstream pressure, aided by a return spring, holds the valve head against the seat in the closed position.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nDownstream pressure is set by rotating the hand wheel in a clockwise direction which compresses the control spring and extends the bellows. This downward movement is transmitted via a push rod, which causes the main valve to open.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nThe steam then passes through the open valve into the downstream pipework and also surrounds the bellows.\r\n\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n\r\nAs downstream pressure increases, it acts through the bellows to counteract the spring force and closes the main valve when the set pressure is reached. The main valve modulates to give constant pressure.\r\n\r\n<!-- \/wp:paragraph -->","parent":0,"count":4,"filter":"raw"},{"term_id":2371,"name":"spirax sarco valves","slug":"spirax-sarco-valves","term_group":0,"term_taxonomy_id":2371,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"}],"taxonomy_info":{"category":[{"value":2368,"label":"Control Valve"}],"post_tag":[{"value":2651,"label":"Shanghai Pressure Reducing Valve Factory"},{"value":2369,"label":"spirax sarco 25p"},{"value":2370,"label":"spirax sarco 25p pressure reducing valve"},{"value":2372,"label":"spirax sarco pressure reducing valve"},{"value":2373,"label":"Spirax Sarco PRV"},{"value":2371,"label":"spirax sarco valves"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Spirax-Sarco 25P Pressure Reducing 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\/operation-of-the-spirax-sarco-25p-pressure-reducing-valve-zeco-valve-blog.html\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Spirax-Sarco 25P Pressure Reducing Valve - Zeco Valve\" \/>\n<meta property=\"og:description\" content=\"Cougar USA is the Spirax Sarco rep in the Houston area. 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