{"product_id":"welch-1399-duoseal-unmounted-pump","title":"Welch 1399 DuoSeal Unmounted Pump","description":"\u003cp dir=\"auto\" bis_size='{\"x\":12,\"y\":9,\"w\":575,\"h\":19,\"abs_x\":621,\"abs_y\":-29}'\u003eWelch 1399 DUOSEAL Vacuum Pump – 5.6 CFM (Unmounted)\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\" bis_size='{\"x\":12,\"y\":45,\"w\":575,\"h\":39,\"abs_x\":621,\"abs_y\":7}'\u003eThe \u003cstrong bis_size='{\"x\":38,\"y\":45,\"w\":143,\"h\":19,\"abs_x\":647,\"abs_y\":7}'\u003eWelch 1399 DUOSEAL\u003c\/strong\u003e is a compact yet powerful belt-drive rotary vane vacuum pump, ideal for laboratory and light industrial applications requiring reliable deep vacuum.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\" bis_size='{\"x\":12,\"y\":100,\"w\":575,\"h\":78,\"abs_x\":621,\"abs_y\":62}'\u003eWelch DuoSeal 1399 is an unmounted pump and a component to a complete belt driven vacuum pump. The Welch DuoSeal Unmounted Pump 1399 requires a base, motor and belt to generate vacuum. This product can only be used as a drop-in replacement for the pump component of a complete vacuum pump.\u003c\/p\u003e\n\u003ch4 dir=\"auto\" bis_size='{\"x\":12,\"y\":194,\"w\":575,\"h\":19,\"abs_x\":621,\"abs_y\":156}'\u003eKey Features\u003c\/h4\u003e\n\u003cul dir=\"auto\" bis_size='{\"x\":12,\"y\":228,\"w\":575,\"h\":97,\"abs_x\":621,\"abs_y\":190}'\u003e\n\u003cli bis_size='{\"x\":52,\"y\":228,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":190}'\u003e5.6 CFM (160 L\/min) pumping speed\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":247,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":209}'\u003eUltimate vacuum down to 1 × 10⁻⁴ Torr\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":267,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":229}'\u003eLarge oil reservoir for extended life and cooler operation\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":287,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":249}'\u003eDurable DUOSEAL rotary vane technology\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":306,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":268}'\u003eEasy maintenance and service access\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 dir=\"auto\" bis_size='{\"x\":12,\"y\":340,\"w\":575,\"h\":19,\"abs_x\":621,\"abs_y\":302}'\u003eIdeal Applications\u003c\/h4\u003e\n\u003cul dir=\"auto\" bis_size='{\"x\":12,\"y\":373,\"w\":575,\"h\":97,\"abs_x\":621,\"abs_y\":335}'\u003e\n\u003cli bis_size='{\"x\":52,\"y\":373,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":335}'\u003eLaboratory vacuum systems\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":393,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":355}'\u003eVacuum ovens and drying\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":413,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":375}'\u003eSchlenk lines and glove boxes\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":432,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":394}'\u003eSmall vacuum distillation setups\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":452,\"w\":535,\"h\":19,\"abs_x\":661,\"abs_y\":414}'\u003eLight industrial processes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\" bis_size='{\"x\":12,\"y\":485,\"w\":575,\"h\":39,\"abs_x\":621,\"abs_y\":447}'\u003eThis unmounted version (Welch 1399) is perfect for custom vacuum systems or as a replacement pump head.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\" bis_size='{\"x\":12,\"y\":541,\"w\":575,\"h\":39,\"abs_x\":621,\"abs_y\":503}'\u003e\u003cstrong bis_size='{\"x\":12,\"y\":541,\"w\":348,\"h\":19,\"abs_x\":621,\"abs_y\":503}'\u003eNeed technical advice or compatibility confirmation?\u003c\/strong\u003e Email \u003cstrong bis_size='{\"x\":400,\"y\":541,\"w\":177,\"h\":19,\"abs_x\":1009,\"abs_y\":503}'\u003e\u003ca href=\"mailto:support@chemtechsci.com\" rel=\"noopener noreferrer nofollow\" bis_size='{\"x\":400,\"y\":541,\"w\":177,\"h\":19,\"abs_x\":1009,\"abs_y\":503}' target=\"_blank\"\u003esupport@chemtechsci.com\u003c\/a\u003e\u003c\/strong\u003e or call \u003cstrong bis_size='{\"x\":53,\"y\":560,\"w\":100,\"h\":19,\"abs_x\":662,\"abs_y\":522}'\u003e(484) 424-9415\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":596,\"w\":575,\"h\":19,\"abs_x\":621,\"abs_y\":558}'\u003e \u003c\/p\u003e\n\u003ctable width=\"604\" bis_size='{\"x\":12,\"y\":631,\"w\":575,\"h\":253,\"abs_x\":621,\"abs_y\":593}'\u003e\n\u003ctbody bis_size='{\"x\":15,\"y\":634,\"w\":569,\"h\":247,\"abs_x\":624,\"abs_y\":596}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":634,\"w\":569,\"h\":39,\"abs_x\":624,\"abs_y\":596}'\u003e\n\u003ctd width=\"323\" bis_size='{\"x\":15,\"y\":634,\"w\":302,\"h\":39,\"abs_x\":624,\"abs_y\":596}'\u003e\n\u003cp bis_size='{\"x\":17,\"y\":636,\"w\":298,\"h\":19,\"abs_x\":626,\"abs_y\":598}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":636,\"w\":103,\"h\":19,\"abs_x\":626,\"abs_y\":598}'\u003ePumping Speed\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\" bis_size='{\"x\":319,\"y\":634,\"w\":264,\"h\":39,\"abs_x\":928,\"abs_y\":596}'\u003e\n\u003cp bis_size='{\"x\":321,\"y\":636,\"w\":260,\"h\":19,\"abs_x\":930,\"abs_y\":598}'\u003e1.2 CFM (35 l\/min)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":676,\"w\":569,\"h\":39,\"abs_x\":624,\"abs_y\":638}'\u003e\n\u003ctd width=\"323\" bis_size='{\"x\":15,\"y\":676,\"w\":302,\"h\":39,\"abs_x\":624,\"abs_y\":638}'\u003e\n\u003cp bis_size='{\"x\":17,\"y\":678,\"w\":298,\"h\":19,\"abs_x\":626,\"abs_y\":640}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":678,\"w\":88,\"h\":19,\"abs_x\":626,\"abs_y\":640}'\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\" bis_size='{\"x\":319,\"y\":676,\"w\":264,\"h\":39,\"abs_x\":928,\"abs_y\":638}'\u003e\n\u003cp bis_size='{\"x\":321,\"y\":678,\"w\":260,\"h\":19,\"abs_x\":930,\"abs_y\":640}'\u003e0.030 torr\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":718,\"w\":569,\"h\":39,\"abs_x\":624,\"abs_y\":680}'\u003e\n\u003ctd width=\"323\" bis_size='{\"x\":15,\"y\":718,\"w\":302,\"h\":39,\"abs_x\":624,\"abs_y\":680}'\u003e\n\u003cp bis_size='{\"x\":17,\"y\":720,\"w\":298,\"h\":19,\"abs_x\":626,\"abs_y\":682}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":720,\"w\":78,\"h\":19,\"abs_x\":626,\"abs_y\":682}'\u003eOil Capacity\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\" bis_size='{\"x\":319,\"y\":718,\"w\":264,\"h\":39,\"abs_x\":928,\"abs_y\":680}'\u003e\n\u003cp bis_size='{\"x\":321,\"y\":720,\"w\":260,\"h\":19,\"abs_x\":930,\"abs_y\":682}'\u003e0.5 qt(0.47 l)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":759,\"w\":569,\"h\":39,\"abs_x\":624,\"abs_y\":721}'\u003e\n\u003ctd width=\"323\" bis_size='{\"x\":15,\"y\":759,\"w\":302,\"h\":39,\"abs_x\":624,\"abs_y\":721}'\u003e\n\u003cp bis_size='{\"x\":17,\"y\":761,\"w\":298,\"h\":19,\"abs_x\":626,\"abs_y\":723}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":761,\"w\":100,\"h\":19,\"abs_x\":626,\"abs_y\":723}'\u003eTubing Needed\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\" bis_size='{\"x\":319,\"y\":759,\"w\":264,\"h\":39,\"abs_x\":928,\"abs_y\":721}'\u003e\n\u003cp bis_size='{\"x\":321,\"y\":761,\"w\":260,\"h\":19,\"abs_x\":930,\"abs_y\":723}'\u003e7\/16(11)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":801,\"w\":569,\"h\":39,\"abs_x\":624,\"abs_y\":763}'\u003e\n\u003ctd width=\"323\" bis_size='{\"x\":15,\"y\":801,\"w\":302,\"h\":39,\"abs_x\":624,\"abs_y\":763}'\u003e\n\u003cp bis_size='{\"x\":17,\"y\":803,\"w\":298,\"h\":19,\"abs_x\":626,\"abs_y\":765}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":803,\"w\":159,\"h\":19,\"abs_x\":626,\"abs_y\":765}'\u003eExhaust \/ Intake threads\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\" bis_size='{\"x\":319,\"y\":801,\"w\":264,\"h\":39,\"abs_x\":928,\"abs_y\":763}'\u003e\n\u003cp bis_size='{\"x\":321,\"y\":803,\"w\":260,\"h\":19,\"abs_x\":930,\"abs_y\":765}'\u003e3\/4-20\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":842,\"w\":569,\"h\":39,\"abs_x\":624,\"abs_y\":804}'\u003e\n\u003ctd width=\"323\" bis_size='{\"x\":15,\"y\":842,\"w\":302,\"h\":39,\"abs_x\":624,\"abs_y\":804}'\u003e\n\u003cp bis_size='{\"x\":17,\"y\":844,\"w\":298,\"h\":19,\"abs_x\":626,\"abs_y\":806}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":844,\"w\":73,\"h\":19,\"abs_x\":626,\"abs_y\":806}'\u003ePump RPM\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"281\" bis_size='{\"x\":319,\"y\":842,\"w\":264,\"h\":39,\"abs_x\":928,\"abs_y\":804}'\u003e\n\u003cp bis_size='{\"x\":321,\"y\":844,\"w\":260,\"h\":19,\"abs_x\":930,\"abs_y\":806}'\u003e750\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1136573408,"sku":"1399","price":1824.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-1399-duoseal-unmounted-pump-25489757077653.jpg?v=1779795251","url":"https:\/\/www.chemtechsci.com\/products\/welch-1399-duoseal-unmounted-pump","provider":"Chemtech Scientific Incorporated","version":"1.0","type":"link"}