{"product_id":"welch-1399b-10-duoseal-mounted-without-motor-1-2-cfm","title":"Welch 1399B-10 DUOSEAL Mounted without motor, 1.2 CFM","description":"\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003e\u003cstrong\u003eWelch 1399B-10 DuoSeal Mounted Vacuum Pump (Without Motor) – 1.2 CFM\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eThe \u003cstrong\u003eWelch 1399B-10\u003c\/strong\u003e is a single-stage DuoSeal belt drive vacuum pump head (mounted, without motor). This compact pump delivers \u003cstrong\u003e1.2 CFM\u003c\/strong\u003e (34 L\/min) free air displacement and is designed for applications that require strong roughing performance rather than extremely deep vacuum.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eAs part of Welch’s trusted DuoSeal series, the \u003cstrong\u003e1399B-10\u003c\/strong\u003e features the classic low-RPM belt drive design that provides cooler operation, excellent durability, and easy maintenance. The large oil reservoir helps handle moderate vapor loads effectively.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eKey Features – Welch 1399B-10\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel\u003c\/strong\u003e: Welch 1399B-10 (Mounted Pump Head Only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Air Displacement\u003c\/strong\u003e: 1.2 CFM (34 L\/min)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltimate Vacuum\u003c\/strong\u003e: 1 × 10⁻² Torr (Single Stage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnology\u003c\/strong\u003e: Single-Stage DuoSeal Rotary Vane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign\u003c\/strong\u003e: Belt Drive – Low RPM for long service life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor\u003c\/strong\u003e: Not included (ideal for custom installations)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eBest Applications for Welch 1399B-10\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eRough vacuum applications\u003c\/li\u003e\n\u003cli\u003eVacuum filtration and aspiration\u003c\/li\u003e\n\u003cli\u003eVacuum ovens (where very deep vacuum is not required)\u003c\/li\u003e\n\u003cli\u003eGas sampling and transfer\u003c\/li\u003e\n\u003cli\u003eBacking pumps for higher vacuum systems\u003c\/li\u003e\n\u003cli\u003eGeneral laboratory and light industrial use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eThe Welch 1399B-10 is an excellent choice when you need reliable single-stage performance with the durability of a DuoSeal belt drive pump. It offers a cost-effective solution for applications that do not require the deeper vacuum of two-stage models like the 1400 or 1402 series.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eChemtech Scientific offers genuine Welch DuoSeal pumps and provides full repair services, rebuild kits, and technical support.\u003c\/p\u003e","brand":"Chemtech Scientific Incorporated","offers":[{"title":"Default Title","offer_id":43998341267605,"sku":"1399B-10","price":2109.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/files\/welch-1399b-10-duoseal-mounted-without-motor-1-2-cfm-31946238361749.png?v=1779793828","url":"https:\/\/www.chemtechsci.com\/products\/welch-1399b-10-duoseal-mounted-without-motor-1-2-cfm","provider":"Chemtech Scientific Incorporated","version":"1.0","type":"link"}