{"product_id":"welch-1400-duoseal-unmounted-pump","title":"Welch 1400 DuoSeal Unmounted Pump","description":"\u003cp\u003eThe Welch 1400 DuoSeal Unmounted Vacuum Pump is the bare pump head designed for custom installations or as a drop-in replacement. This compact two-stage rotary vane belt-drive pump delivers 0.9 CFM (25 L\/min) free air displacement and an ultimate vacuum of 1×10⁻⁴ Torr. Its slow 580 RPM operation runs cooler, reduces wear, and extends oil life dramatically compared to direct-drive pumps. Ideal for Schlenk lines, small freeze dryers, degassing, and laboratory vacuum systems. Large oil reservoir helps dilute contaminants.\u003c\/p\u003e\n\u003cp\u003eNote: Motor, base, belt, and pulley sold separately. For a complete turnkey unit, see the \u003ca rel=\"noopener\" title=\"Welch 1400B-01 Duoseal Vacuum Pump\" href=\"https:\/\/www.chemtechsci.com\/products\/welch-1400b-01-duoseal-vacuum-pump?_pos=1\u0026amp;_sid=6331afef9\u0026amp;_ss=r\" target=\"_blank\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e1400B-01\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e model.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed technical advice or compatibility confirmation?\u003c\/strong\u003e Email \u003cstrong\u003e\u003ca rel=\"noopener noreferrer nofollow\" href=\"mailto:support@chemtechsci.com\" target=\"_blank\"\u003esupport@chemtechsci.com\u003c\/a\u003e\u003c\/strong\u003e or call \u003cstrong\u003e(484) 424-9415\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ctable width=\"604\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"323\"\u003e\n\u003cp\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\"\u003e\n\u003cp\u003e0.9 CFM (25 l\/min)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"323\"\u003e\n\u003cp\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\"\u003e\n\u003cp\u003e0.001 torr\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"323\"\u003e\n\u003cp\u003e\u003cstrong\u003eOil Capacity\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\"\u003e\n\u003cp\u003e0.62 qt(0.59 l)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"323\"\u003e\n\u003cp\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\"\u003e\n\u003cp\u003e7\/16\"(11 mm)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"323\"\u003e\n\u003cp\u003e\u003cstrong\u003eExhaust \/ Intake threads\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\"\u003e\n\u003cp\u003e3\/4-20\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"323\"\u003e\n\u003cp\u003e\u003cstrong\u003ePump RPM\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\"\u003e\n\u003cp\u003e580\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1136582576,"sku":"1400","price":2110.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-1400-duoseal-unmounted-pump-15977316448.jpg?v=1779793930","url":"https:\/\/www.chemtechsci.com\/products\/welch-1400-duoseal-unmounted-pump","provider":"Chemtech Scientific Incorporated","version":"1.0","type":"link"}