{"id":87,"count":7,"description":"Interflange check valves are a reliable and compact solution for protecting pipeline systems from the reverse flow of the working medium. They are installed between two pipeline flanges. The UKSPAR catalog presents a wide range of such products of various types, materials and diameters - from small household models to industrial models for main networks.\r\n<h2>UKSPAR range of flanged check valves<\/h2>\r\nUKSPAR offers reliable solutions for modern pipeline systems. The range includes:\r\n<ul>\r\n \t<li>single-leaf models with a disc made of steel or stainless steel 304\/316;<\/li>\r\n \t<li>double-leaf valves with a cast iron body GGG40 and cast iron or stainless steel blades;<\/li>\r\n \t<li>rotary valves with counterweight for large diameters.<\/li>\r\n<\/ul>\r\nSeals are made of EPDM, NBR or VITON depending on the medium and temperature. The working pressure of the models is from PN10 to PN25.\r\n<h2>How to choose a flanged valve by diameter and pressure<\/h2>\r\nThe selection of valves begins with an analysis of the network parameters. The main criteria are the nominal flow and operating pressure.\r\n<ul>\r\n \t<li>The diameter must exactly match the pipe cross-section to avoid flow restriction and pressure loss.<\/li>\r\n \t<li>The pressure in the system cannot exceed the product&#039;s nominal values.<\/li>\r\n \t<li>For standard networks, a pressure of 10 or 16 bar is usually sufficient.<\/li>\r\n \t<li>For industrial mains and powerful pumping stations \u2013 25 bar and above.<\/li>\r\n<\/ul>\r\nIt is important to consider the temperature of the medium, as the maximum allowable pressure decreases when heated.\r\n<h2>Design and operating principle<\/h2>\r\nThe basis of the product is a compact housing that is clamped between two flanges of the pipeline. Inside is a moving element and a spring. When the pump creates pressure, the flow deflects the shut-off element and flows freely further. As soon as the pump is turned off or the inlet pressure drops, the mechanism reacts instantly. Due to the direct-action principle, the mechanism does not require external power sources, electric current or compressed air connection. The shut-off element is controlled by the energy of the liquid or gas flow itself moving through the pipes.\r\n<h3>Rotary disc and closing mechanism<\/h3>\r\nIn rotary models, the disc is fixed on an axis and rotates under the pressure of the flow, and the reverse movement of the medium presses the disc against the seat and blocks the passage. In double-leaf valves, the role of the closing element is performed by two semicircular flaps on a common axis, which close under the influence of reverse flow. Spring-loaded models accelerate the closing thanks to the spring that presses the disc against the seat before the reverse flow gains strength. This is important on vertical pipelines and in case of water hammer.\r\n<h2>Manufacturing materials<\/h2>\r\nThe material from which the flange check valve is made determines its durability, corrosion resistance and chemical neutrality. UKSPAR uses high-quality materials to ensure trouble-free operation of the equipment. The cast iron body (GGG40) is used in municipal and industrial water supply networks, where mechanical strength is important at a moderate cost. The steel body withstands higher pressure and load, so it is chosen for industrial pipelines. Stainless steel is a solution for aggressive environments, elevated temperatures and objects with high requirements for corrosion resistance.\r\n<h2>Advantages of the interflange type over the flange type<\/h2>\r\nThe interflange valve is more compact and lighter than the flanged counterpart, since it does not have its own flanges. This reduces the weight of the assembly, simplifies installation and reduces the length of the pipeline section. Fastening is carried out with the same bolts or studs that tighten the pipeline flanges, without additional connecting elements. This also makes the cost lower compared to the flanged model.\r\n<h2>Areas of application and installation<\/h2>\r\nUKSPAR flanged check valves are widely used in various industries and utilities:\r\n<ul>\r\n \t<li>Water supply systems.<\/li>\r\n \t<li>Heating systems.<\/li>\r\n \t<li>Sewerage networks.<\/li>\r\n \t<li>Industrial pipelines.<\/li>\r\n \t<li>Fire extinguishing systems.<\/li>\r\n<\/ul>\r\nThe flange-type check valve is mounted between two flanges of the pipeline, taking into account the flow direction indicated by the arrow on the body. Sealing gaskets are installed on both sides of the valve before tightening the bolts. If you plan to buy a flange-type check valve, the UKSPAR catalog presents solutions for various operating conditions. The company&#039;s specialists will help you choose the optimal model according to the parameters of your system.","link":"https:\/\/ukspar.ua\/en\/zvorotni-klapany-mizhflancevi\/","name":"Inter-flange non-return valves","slug":"zvorotni-klapany-mizhflancevi","taxonomy":"product_cat","parent":58,"meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/ukspar.ua\/en\/wp-json\/wp\/v2\/product_cat\/87"}],"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"}],"up":[{"embeddable":true,"href":"https:\/\/ukspar.ua\/en\/wp-json\/wp\/v2\/product_cat\/58"}],"wp:post_type":[{"href":"https:\/\/ukspar.ua\/en\/wp-json\/wp\/v2\/product?product_cat=87"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}