{"id":51124,"date":"2022-04-22T16:50:30","date_gmt":"2022-04-22T14:50:30","guid":{"rendered":"https:\/\/www.dellmeco-deutschland.de\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/"},"modified":"2022-11-17T10:12:43","modified_gmt":"2022-11-17T09:12:43","slug":"polytetrafluoroethylene-ptfe","status":"publish","type":"page","link":"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/","title":{"rendered":"Polytetrafluoroethylene PTFE"},"content":{"rendered":"    <div class=\"hero -product alignfull \">\n        <div class=\"container\">\n            <div class=\"row hero--item\">\n                <div class=\"col align-self-center\">\n                    <div class=\"hero--headline\">Polytetrafluoroethylene PTFE<\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n\n\n<div style=\"height:10vh\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.dellmeco-deutschland.de\/wp-content\/uploads\/2022\/04\/PTFE-1.jpg\" alt=\"\" class=\"wp-image-802\" width=\"375\" height=\"471\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>Polytetrafluoroethylene (PTFE) is a fully fluorinated polymer. It has a smooth surface and, as a result, has a low friction coefficient. PTFE is physiologically inert, chemically resistant and impervious to diffusion. Pure PTFE is only suitable for use with abrasion to a limited extent since cold flow quickly arises. The biggest advantage of PTFE is that it is resistant to almost all chemicals. However, PTFE is not resistant to liquid alkaline metals, gaseous fluorine and certain fluoride chemicals such as chlorine monofluoride or oxygen fluoride. In addition, PTFE is only useable with abrasive materials to a limited extent.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:10vh\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button btn--secondary\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.dellmeco-deutschland.de\/produktanfrage\/?prod=Pneumatische%20Doppelmembranpumpen%20Polytetrafluorethylen%20PTFE\">Product request<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-buttons justify-content-start justify-content-md-end mt-5 mt-md-0 is-content-justification-left is-layout-flex wp-container-core-buttons-is-layout-2 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button btn--third\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.dellmeco-deutschland.de\/wp-content\/uploads\/2022\/11\/DM_Plastic_EN_Version_05_2021.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Manual<\/a><\/div>\n\n\n\n<div class=\"wp-block-button btn--third\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.dellmeco-deutschland.de\/wp-content\/uploads\/2022\/04\/data_sheet_plastic.pdf\">data Sheet<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:10vh\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Special version<\/h2>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n\n<div class=\"productoptions variations  \">\n    <div class=\"owl-dots\"><button class=\"owl-dot is-active\" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/rueckpuelsystem.jpg\" alt=\"Backwash system\/ball valve\"><\/button><button class=\"owl-dot \" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/sperrkammersystem.jpg\" alt=\"Buffer chamber system\"><\/button><button class=\"owl-dot \" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/Hubzaehlung-1.jpg\" alt=\"Stroke counting\"><\/button><button class=\"owl-dot \" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/magnetventilsteuerung.jpg\" alt=\"Solenoid control (Namur)\"><\/button><button class=\"owl-dot \" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/hochdruck-variante.jpg\" alt=\"High-pressure variants\"><\/button><button class=\"owl-dot \" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/leitfaehig.jpg\" alt=\"Conductive\"><\/button><\/div>    <div class=\"productoptions--owl variations--owl\">\n        <div class=\"productoptions--item\"><div class=\"productoptions--headline\">Backwash system\/ball valve<\/div><div class=\"productoptions--body\">For pumps with side housing made from plastic (PE and PTFE, also electrically conductive), the backwash system allows for the removal of residues from pipes and pumps. A bypass line is introduced into the side housing for the pump. The bypass line is opened via manual valves. Care should be taken to ensure that the manual valve is turned by max. 10 mm since the lift on manual valves is not limited. The bypass line can also be opened using pneumatically operated valves. \n                        <br><br>\n                        For this, a valve control pressure of at least 3.0 bar is required. For pumps with side housing made from metal (aluminium, grey cast iron and stainless steel), the backwash system allows for the removal of residues from pipes and pumps. To do this, the ball valves in the pump chamber are manually lifted on the draw and pressure sides. The backwash system\/ball valve raising can automatically be activated when the pump is switched off if an optionally available 4\/2-way valve is used.\n                         <br><br>\n                        <strong>The backwash system\/ball valve raising is available in the following models:<\/strong>\n                        BF 1 \u2013 Backwash system with manual valve, EPDM seals for pump housings made from plastic and metal\n                        BF 2 \u2013 Backwash system with manual valve, PTFE seals for pump housings made from plastic and metal\n                        BF 3 \u2013 Backwash system with manual valve, FPM seals for pump housings made from plastic and metal\n                        BF 4 \u2013 Backwash system with pneumatic valve, EPDM seals for pump housings made from plastic\n                        BF 5 \u2013 Backwash system with pneumatic valve, PTFE seals for pump housings made from plastic<\/div><\/div><div class=\"productoptions--item\"><div class=\"productoptions--headline\">Buffer chamber system<\/div><div class=\"productoptions--body\">The buffer chamber system with diaphragm monitoring is available in the following models:\n                        BC 1 \u2013 Buffer chamber system with diaphragm monitoring, with sensors\n                        BC 2 \u2013 Buffer chamber system with diaphragm monitoring, with sensors and switching device\n                        BC 3 \u2013 Buffer chamber system with diaphragm monitoring, with sensors, switching device\n                        and an intrinsically safe isolating amplifier (potentially explosive areas)\n                        <br><br>\n                        <strong>Note:<\/strong>\n                        The maximum permissible operating temperature for pumps with buffer chamber system with diaphragm monitoring is +70 \u00b0C for PE pumps and +80 \u00b0C for PTFE pumps.<\/div><\/div><div class=\"productoptions--item\"><div class=\"productoptions--headline\">Stroke counting<\/div><div class=\"productoptions--body\">A contactless sensor (proximity sensor) is installed in the motor housing. This registers every second stroke of the diaphragm in the pump chamber. This type of stroke counting is independent from the operation mode of the pump. The signals from the sensor can, for example, be transmitted to an available control unit or an optionally available stroke counter. The strokes for the pump can be pre-defined via the stroke counter. \n                        <br><br>\n                        Once the preset stroke rate is reached, the pump is switched off using a likewise optionally available solenoid valve. The strokes can also be captured pneumatically using a pressure sensor. Here, the pressure change in the motor housing is measured behind a diaphragm.\n                        <br><br>\n                        Stroke counters are available in the following models:\n                        SC 1 \u2013 Proximity sensor (Namur) with approx. 3.0 m connection cable\n                        SC 2 \u2013 Proximity sensor (Namur) with stroke counter\n                        SC 3 \u2013 Proximity sensor (Namur) with stroke counter and intrinsically safe isolating amplifier in accordance with potentially explosive areas\n                        SC 5 \u2013 Pressure switch (1.0 \u2013 10.0 bar) with approx. 5.0 m connection cable\n                        SC 6 \u2013 Pressure switch (1.0 \u2013 10.0 bar) with stroke counter\n                        <br><br>\n                        <strong>Note:<\/strong>\n                        If the proximity sensor (SC 1) is used in a potentially explosive area, an intrinsically safe isolating\n                        amplifier should also be provided.<\/div><\/div><div class=\"productoptions--item\"><div class=\"productoptions--headline\">Solenoid control (Namur)<\/div><div class=\"productoptions--body\">Dellmeco pumps can be equipped with the \u201cMV\u201d option. The automatic control valve is replaced with a 5\/2-way solenoid valve. The number of strokes is controlled by this solenoid valve. This option requires a voltage of 24V DC.<\/div><\/div><div class=\"productoptions--item\"><div class=\"productoptions--headline\">High-pressure variants<\/div><div class=\"productoptions--body\"><strong>High pressure pumps are particularly suitable for use in the following areas of application:<\/strong>\n                        <ul>\n                            <li>Coating of chamber filter presses<\/li>\n                            <li>Coating of spray nozzles<\/li>\n                            <li>Delivery of high viscosity media<\/li>\n                            <li>Paint lines<\/li>\n                            <li>Overcoming large pump heights<\/li>\n                        <\/ul>\n                        <strong>Operation<\/strong>\n                        Our HP range achieves a delivery pressure of 16.0 bar at a drive pressure of max. 8.0 bar through an external pressure converter (booster). With this compressed air booster, our pumps achieve a max. delivery quantity of 34 m3\/h (DM50\/565).\n                        All housing components which come into contact with the product are made from polyethylene (PE), aluminium, grey cast iron or stainless steel.\n                        <br><br>\n                        Dellmeco HP pumps distinguish themselves in that they have a self-regulating design and thus do not require any regulation with regard to dry running, excess pressure or speed. There are also no rotating components, of course, resulting in a particularly gentle material delivery.<\/div><\/div><div class=\"productoptions--item\"><div class=\"productoptions--headline\">Conductive<\/div><div class=\"productoptions--body\">Our conductive versions are available for all ATEX zones \u2013 even zone 0 is possible. The pump does not lose any of its technical features and can thus be used without limit in productions in which increased fire and explosion risks prevail. Our team will be happy to advise you, according to the area of application and requirements, in the selection of the right double diaphragm pump.<\/div><\/div>    <\/div>\n<\/div>\n\n\n\n\n\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Accessories<\/h2>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n\n<div class=\"productoptions options  \">\n    <div class=\"owl-dots\"><button class=\"owl-dot is-active\" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/druckluftregler.jpg\" alt=\"Compressed air regulator \/ filter regulator\"><\/button><button class=\"owl-dot \" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/Membranfasspumpe.jpg\" alt=\"Diaphragm barrel pump\"><\/button><button class=\"owl-dot \" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/pulsationsdaempfer.jpg\" alt=\"Pulsation damper\"><\/button><button class=\"owl-dot \" role=\"button\"><img decoding=\"async\" src=\"https:\/\/dellmeco.testunikat.com\/wp-content\/uploads\/2022\/04\/membranbruchueberwachung.jpg\" alt=\"Diaphragm monitoring\"><\/button><\/div>    <div class=\"productoptions--owl options--owl\">\n        <div class=\"productoptions--item\"><div class=\"productoptions--headline\">Compressed air regulator \/ filter regulator<\/div><div class=\"productoptions--body\">The pressure filter regulator, also known as the maintenance unit, is used in order to regulate the pressure of the pump and to set the delivery capacity of the pump.\n                                <br><br>\n                                In addition, this regulator has a moisture separator and a fine filter in order to keep water and dirt away from the compressed air components in the pump.\n                                <br><br>                        \n                                It is available in three sizes in order to reasonably operate any pump size.\n                                A needle valve for precise fine regulation of the delivery capacity from 0-100% is optionally available.<\/div><\/div><div class=\"productoptions--item\"><div class=\"productoptions--headline\">Diaphragm barrel pump<\/div><div class=\"productoptions--body\">The selected pump is supplied with metal housing and ergonomic handles made from stainless steel (product code D) and has approval in accordance with EN 94\/9\/EC (EX II 2GD TX). It is therefore suitable for use as a barrel pump for 200 | DIN barrels and IBC containers. This accessory is designed for a maximum delivery capacity of up to 7.5 m3\/h (DM25). The suction pipe is made from stainless steel.\n                                <br><br>\n                                In order to ensure optimal resistance against the media to be delivered, Dellmeco barrel pumps are made from the following materials: PE, conductive PE, PTFE, conductive PRFE, aluminium and stainless steel (AISI 316).\n                                Our barrel pumps can be used up to a viscosity of 12,000 mPas.\n                                 <br><br>\n                                Barrel pumps are available in nominal widths of 3\/8\u201d, 1\/2\u201d, 3\/4\u201d and 1\u201d. The standard lengths of the suction pipes are 1.0 m or 1.2 m.\n                                <br><br>\n                                Suction pipe materials:\n                                <ul>\n                                    <li>Polypropylene<\/li>\n                                    <li>PTFE<\/li>\n                                    <li>Aluminium<\/li>\n                                    <li>Stainless steel (AISI 316)<\/li>\n                                <\/ul><\/div><\/div><div class=\"productoptions--item\"><div class=\"productoptions--headline\">Pulsation damper<\/div><div class=\"productoptions--body\">When operating compressed air driven double diaphragm pumps (positive displacement pumps), a pulsating delivery flow results from the oscillating movement of the diaphragm. In order to achieve an almost uniform delivery flow, the use of a suitable active pulsation damper is mandatory.\n                                <br><br>\n                                The Dellmeco F range is a specially developed pump with integrated pulsation damper and two separate product chambers. The first product chamber is used for delivering a liquid from a reservoir to the system. This chamber works by using a directly installed and actively controlled pulsation damper. The product flow is thus delivered evenly. An air pressure of at least 1 bar is required for perfect use of the pulsation damper.\n                                <br><br>\n                                The second chamber is used for returning the excess product (e.g. colour, glue, adhesive, etc.) from the system to the reservoir. The second chamber can also be used for circulating the product in the reservoir. The quick sedimentation of a product can thereby be prevented.\n                                <br><br>\n                                When using Dellmeco pumps with plastic housing, the pulsation damper is screwed directly onto the material outlet without the use of further components. When using pumps with metallic housing, the pulsation damper is installed downstream from the pump. Each pulsation damper has a separate compressed air connection. Pumps and pulsation dampers should be connected to the compressed air supply together so that both units are supplied with the same air pressure. As soon as the pump is supplied with air pressure and begins delivery, the pulsation also begins reducing the pulsation. The diaphragm in the pulsation damper, as in the double diaphragm pumps, serves as a separating membrane between the air side and the product side. If the air pressure is reduced or increased as a result of modified operating conditions, the pressure on the delivery side is also reduced or increased. This occurs both in the pump and in the pulsation damper. Consistently good damping of the pulsation is achieved, caused by this automatic adjustment of the pressure.\n                                Use in potentially explosive areas (EX II 2GD TX) is assured through the use of conductive polyethylene as the housing material.<\/div><\/div><div class=\"productoptions--item\"><div class=\"productoptions--headline\">Diaphragm monitoring<\/div><div class=\"productoptions--body\">A moisture sensor (capacitive) is installed in the pump\u2019s silencer. This sensor detects any liquid which inevitably gets into the pump motor in the event of a diaphragm rupture. The sensor\u2019s output signal can be transmitted to an available programmable memory controller or an optionally available control unit. \n                                <br><br>\n                                If the sensor transmits an alarm signal, this alarm can be transmitted to a likewise optionally available solenoid valve. The solenoid valve shuts of the air supply. The pump stops.\n                                <br><br>\n                                <strong>Note:<\/strong>\n                                If the pump is operated with an upstream moisture separator (filter regulator), damp compressed air can lead to triggering of the sensor (alarm). It is therefore mandatory to install an optionally available moisture separator (filter regulator) before the pump.\n                                If diaphragm monitoring (DM1, DM2) is used in a potentially explosive area, an intrinsically safe isolating amplifier should also be provided in addition to the proximity sensor.\n                                <br><br>\n                                Diaphragm monitoring is available in the following models:\n                                DM 1 \u2013 Moisture sensor, capacitive (Namur) with approx. 3.0 m connection cable\n                                DM 2 \u2013 Moisture sensor, capacitive (Namur) with control unit<\/div><\/div>    <\/div>\n<\/div>\n\n\n\n\n\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Polytetrafluoroethylene (PTFE) is a fully fluorinated polymer. It has a smooth surface and, as a result, has a low friction coefficient. PTFE is physiologically inert, chemically resistant and impervious to diffusion. Pure PTFE is only suitable for use with abrasion to a limited extent since cold flow quickly arises. The biggest advantage of PTFE is [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":51102,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Polytetrafluoroethylene PTFE - Dellmeco Deutschland GmbH<\/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:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Polytetrafluoroethylene PTFE - Dellmeco Deutschland GmbH\" \/>\n<meta property=\"og:description\" content=\"Polytetrafluoroethylene (PTFE) is a fully fluorinated polymer. It has a smooth surface and, as a result, has a low friction coefficient. PTFE is physiologically inert, chemically resistant and impervious to diffusion. Pure PTFE is only suitable for use with abrasion to a limited extent since cold flow quickly arises. The biggest advantage of PTFE is [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/\" \/>\n<meta property=\"og:site_name\" content=\"Dellmeco Deutschland GmbH\" \/>\n<meta property=\"article:modified_time\" content=\"2022-11-17T09:12:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.dellmeco-deutschland.de\/wp-content\/uploads\/2022\/04\/PTFE-1.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/\",\"url\":\"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/\",\"name\":\"Polytetrafluoroethylene PTFE - Dellmeco Deutschland GmbH\",\"isPartOf\":{\"@id\":\"https:\/\/www.dellmeco-deutschland.de\/en\/#website\"},\"datePublished\":\"2022-04-22T14:50:30+00:00\",\"dateModified\":\"2022-11-17T09:12:43+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Pneumatic double diaphragm pumps\",\"item\":\"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Plastic double diaphragm pumps\",\"item\":\"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Polytetrafluoroethylene PTFE\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.dellmeco-deutschland.de\/en\/#website\",\"url\":\"https:\/\/www.dellmeco-deutschland.de\/en\/\",\"name\":\"Dellmeco Deutschland GmbH\",\"description\":\"Dellmeco: Doppelmembranpumpen \u2022 Pumpen aus Deutschland\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.dellmeco-deutschland.de\/en\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Polytetrafluoroethylene PTFE - Dellmeco Deutschland GmbH","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.dellmeco-deutschland.de\/en\/pneumatische-doppelmembranpumpen\/plastic-double-diaphragm-pumps\/polytetrafluoroethylene-ptfe\/","og_locale":"en_US","og_type":"article","og_title":"Polytetrafluoroethylene PTFE - Dellmeco Deutschland GmbH","og_description":"Polytetrafluoroethylene (PTFE) is a fully fluorinated polymer. It has a smooth surface and, as a result, has a low friction coefficient. PTFE is physiologically inert, chemically resistant and impervious to diffusion. Pure PTFE is only suitable for use with abrasion to a limited extent since cold flow quickly arises. 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