{"product_id":"knf-n840-3ft-40-18-diaphragm-vacuum-pump","title":"KNF N840.3FT.40.18 Diaphragm Vacuum Pump","description":"\u003cdiv class=\"productdescriptiontables\"\u003e\n\u003ch1\u003eKNF N840.3FT.40.18 Diaphragm Vacuum Pump\u003c\/h1\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cdiv class=\"highlights-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"highlights-section\"\u003e\n\u003cdiv class=\"inner-highlight-div\"\u003e\n\u003cp class=\"inner-highlight\"\u003e\u003cb\u003eMaximum Flow Rate \u003c\/b\u003e\u003cbr\u003e34 l\/min\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"inner-highlight-div\"\u003e\n\u003cp class=\"inner-highlight\"\u003e\u003cb\u003eUltimate Vacuum \u003c\/b\u003e\u003cbr\u003e10 mbar (abs.)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"inner-highlight-div\"\u003e\n\u003cp class=\"inner-highlight\"\u003e\u003cb\u003eHose Connections \u003c\/b\u003e\u003cbr\u003eID 10\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"highlights-divider\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"features-section\"\u003e\n\u003cdiv class=\"features-side\"\u003e\n\u003cspan class=\"features-header\"\u003eFeatures\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e100% oil-free transfer for pure gas transferring and evacuation\u003c\/li\u003e\n\u003cli\u003eIntegrated KNF self-drying system removes condensate without altering vacuum levels\u003c\/li\u003e\n\u003cli\u003eChemically resistant PTFE and FFPM construction for handling aggressive gases and vapors\u003c\/li\u003e\n\u003cli\u003eMaintenance-free design ensures long-term, hassle-free operation\u003c\/li\u003e\n\u003cli\u003eEnvironmentally friendly with clean, oil-free performance\u003c\/li\u003e\n\u003cli\u003eQuiet, compact, and reliable for versatile lab applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"features-side\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0674\/5853\/1418\/files\/KNF-N840.3FT.40.jpg?v=1779991693\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\nThe KNF N840.3FT.40.18 Diaphragm Vacuum Pump delivers exceptional performance with a maximum flow rate of 34 l\/min and an ultimate vacuum of 10 mbar (abs.). Designed for demanding applications, this oil-free, chemically resistant pump features PTFE heads, PTFE-coated diaphragms, and FFPM valves, ensuring superior durability when handling aggressive or corrosive gases and vapors. Its integrated self-drying system effectively removes condensates from the pump heads without affecting vacuum performance, reducing process times and extending pump life. \u003cbr\u003e\u003cbr\u003eOperating quietly and efficiently, the KNF N840.3FT.40.18 offers maintenance-free, environmentally friendly operation, making it an ideal solution for laboratories requiring clean, oil-free gas transfer. Compact yet powerful, it functions within ambient temperatures of +5°C to 40°C, with IP44 protection and a lightweight design of 28.4 lb. This reliable diaphragm pump provides consistent performance while minimizing contamination risks, ensuring precise, efficient results in even the most challenging environments. \u003cbr\u003e\u003cbr\u003eAll of our equipment is in excellent condition and will be fully tested to perform at factory specifications before being shipped.\u003cbr\u003e\u003cbr\u003e\n\u003cdiv class=\"included-box\"\u003e\n\u003cspan class=\"included-header\"\u003eINCLUDED:\u003c\/span\u003e\u003cbr\u003eThe KNF N840.3FT.40.18 Diaphragm Vacuum Pump includes:\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"hidden-car\"\u003e\u0026gt; \u003c\/span\u003ePower Cord\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hidden-car\"\u003e\u0026gt; \u003c\/span\u003eOperator's Manual\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hidden-car\"\u003e\u0026gt; \u003c\/span\u003eFull 180 Day Parts and Labor Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003ch2\u003eKNF N840.3FT.40.18 Diaphragm Vacuum Pump Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow Rate\u003c\/td\u003e\n\u003ctd\u003e34 l\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Vacuum\u003c\/td\u003e\n\u003ctd\u003e10 mbar (abs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Pressure\u003c\/td\u003e\n\u003ctd\u003e1 bar (rel.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePump Head Material\u003c\/td\u003e\n\u003ctd\u003ePTFE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiaphragm Material\u003c\/td\u003e\n\u003ctd\u003ePTFE coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Material\u003c\/td\u003e\n\u003ctd\u003eFFPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHose Connections\u003c\/td\u003e\n\u003ctd\u003eID 10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Class\u003c\/td\u003e\n\u003ctd\u003eIP 44\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePermissible Ambient Temperature\u003c\/td\u003e\n\u003ctd\u003e+5°C to 40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x D x H)\u003c\/td\u003e\n\u003ctd\u003e7.5 x 13.4 x 9.4 in. (18.9 x 34.1 x 23.9 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e28.4 lb. (12.9 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Requirements\u003c\/td\u003e\n\u003ctd\u003e115VAC, 60Hz, 3.2A, 250W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cspan class=\"downloads-header\"\u003eDownloads\u003c\/span\u003e\n\u003cdiv class=\"downloads-section\"\u003e\n\u003cdiv class=\"pdf-button\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0674\/5853\/1418\/files\/KNF_N840.3FT.40.18_Diaphragm_Vacuum_Pump_-_Marshall_Scientific.pdf?v=1779991696\"\u003e Technical Specification Download \u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"pdf-button\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0674\/5853\/1418\/files\/KNF_N840.3FT.40.18_Diaphragm_Vacuum_Pump_Manual_-_Marshall_Scientific.pdf?v=1779991699\"\u003e Operator's Manual Download \u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"formalquote2\"\u003e\u003ca href=\"\/formal_quote_a\/3051.htm\" class=\"formalquote2link\"\u003eRequest a Formal Quote\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Marshall scientific","offers":[{"title":"Default Title","offer_id":43428540711002,"sku":"KNF-N840.3FT.40.18","price":2995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/5853\/1418\/files\/KNF-N840.3FT.40.18-2T.jpg?v=1779986389","url":"https:\/\/p2gnpt-0c.myshopify.com\/products\/knf-n840-3ft-40-18-diaphragm-vacuum-pump","provider":"Marshall Scientific","version":"1.0","type":"link"}