{"id":51,"count":25,"description":"Stainless steel shut-off valves are made of corrosion-resistant steels, designed to shut off, regulate or distribute the flow of working media in pipeline systems. Due to the physicochemical properties of the material, such components ensure tightness and stable operation in conditions of aggressive environments, high pressure and critical temperatures (from <strong>\u2013 30 \u00b0C<\/strong> to <strong>+600 \u00b0C<\/strong>).\r\n<h2><strong>Key operational features<\/strong><\/h2>\r\nStainless steel shut-off and control valves are indispensable in the oil refining, chemical, pharmaceutical and food industries due to the following factors:\r\n<ul>\r\n \t<li><strong>Steel grade:<\/strong> The choice of a specific steel grade is based on hygiene requirements, chemical inertness, and specific operating conditions.<\/li>\r\n \t<li><strong>Heat resistance:<\/strong> Maintains mechanical strength and geometric stability over a wide temperature range.<\/li>\r\n \t<li><strong>Reliability:<\/strong> High resistance to water hammer, erosive wear and cavitation.<\/li>\r\n \t<li><strong>Installation versatility:<\/strong> Possibility of integration into the system using coupling (threaded), welded, flanged or interflange connections.<\/li>\r\n<\/ul>\r\n<h2><strong>Classification and operating principle of the main types of valves<\/strong><\/h2>\r\nThe effectiveness of the system depends on the correct selection of the structural type of the device in accordance with its functional purpose:\r\n<table>\r\n<thead>\r\n<tr>\r\n<td><strong>Device type<\/strong><\/td>\r\n<td><strong>Mechanism of action<\/strong><\/td>\r\n<td><strong>Main purpose<\/strong><\/td>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>Ball valves<\/strong><\/td>\r\n<td>Turn the spherical shutter to <strong>90\u00b0<\/strong> around its axis.<\/td>\r\n<td>Quick flow shut-off (On\/Off).<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Gate valves<\/strong><\/td>\r\n<td>The movement of the wedge gate is perpendicular to the flow axis.<\/td>\r\n<td>Use on large diameter mains with low hydraulic resistance.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Valves<\/strong><\/td>\r\n<td>Moving the spool along the flow axis using a rod.<\/td>\r\n<td>Precise flow regulation and high tightness.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Disc valves<\/strong><\/td>\r\n<td>Rotation of the closing disc around an axis perpendicular or inclined to the direction of flow.<\/td>\r\n<td>Compact overlap in systems with high costs.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h2><\/h2>\r\n<h2><strong>Corrosion resistance and <\/strong><strong>materials science<\/strong><\/h2>\r\nThe service life of reinforcement (which in everyday conditions can be calculated in decades) directly depends on the alloying elements in the steel:\r\n<ol>\r\n \t<li><strong>AISI 304 (08X18H10):<\/strong> Classic &quot;food&quot; steel. Optimal for working with fresh water, in atmospheric conditions and with mildly aggressive environments.<\/li>\r\n \t<li><strong>AISI 316 (10X17H13M2):<\/strong> Contains molybdenum, which provides exceptional resistance to chlorides, seawater and organic acids.<\/li>\r\n<\/ol>\r\n<h2><strong>Standardization and quality control<\/strong><\/h2>\r\nThe production and testing of stainless steel fittings are regulated by strict international and national standards:\r\n<ul>\r\n \t<li><strong>DSTU EN 12266-1 \/ ISO 5208:<\/strong> Determines test methods and tightness classes of valves.<\/li>\r\n \t<li><strong>API 598 \/ ASME B16.34:<\/strong> Used for quality control of imported products operating under high pressure.<\/li>\r\n<\/ul>\r\nDuring technical inspection, parameters such as nominal pressure (<strong>PN<\/strong>), conditional diameter (<strong>DN<\/strong>) and the suitability of the body material and seals (EPDM, PTFE, NBR, VITON) to the working environment.\r\n<h2><strong>Selection recommendations<\/strong><\/h2>\r\nWhen designing or repairing a pipeline, consider not only the price, but also a set of technical factors: the chemical composition of the working medium, peak pressure values, and environmental conditions. A wide range of certified products with a quality guarantee is presented in the company&#039;s catalog <strong>UKSPAR<\/strong>. The company&#039;s specialists will help you choose the optimal configuration of fittings for objects of any complexity with delivery throughout Ukraine. ATTENTION! This catalog presents the technical characteristics of UKSPAR products at the current time. The manufacturer reserves the right to make changes to the design and technical parameters of the products without notifying the consumer. All articles and graphic materials on the website www.ukspar.ua are protected by copyright. Placing articles and graphic materials on other sites is only with the consent of the administration www.ukspar.ua","link":"https:\/\/ukspar.ua\/en\/nerzhaviyucha-armatura\/","name":"The fittings are stainless","slug":"nerzhaviyucha-armatura","taxonomy":"product_cat","parent":0,"meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/ukspar.ua\/en\/wp-json\/wp\/v2\/product_cat\/51"}],"collection":[{"href":"https:\/\/ukspar.ua\/en\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/ukspar.ua\/en\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"wp:post_type":[{"href":"https:\/\/ukspar.ua\/en\/wp-json\/wp\/v2\/product?product_cat=51"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}