{"product_id":"cooling-water-circulator-3-9l-cf-303y","title":"Yamato CF303Y Cooling Water Circulator 3.9L","description":"\u003ch2\u003eCooling Water Circulator 3.9L Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCooling Water Circulator 3.9L (Yamato Scientific CF303Y)\u003c\/strong\u003e is a refrigerated recirculating water circulator built for closed-loop cooling across a temperature setting range of -20°C to 30°C. Sold by LabSupplies.com, authorized dealer, this 3.9 L unit delivers roughly 450 W of cooling capacity at 10°C with ±1.0°C control accuracy at or above freezing.\u003c\/p\u003e\n\u003cp\u003eA stainless steel water bath pairs with a stainless steel 304 cooling coil for durable, corrosion-resistant fluid handling. Temperature is read by a Pt100Ω sensor and managed through refrigeration ON-OFF control with a white LED digital display at 1°C resolution. The R452A air-cooled system reaches a maximum flow rate near 10 L\/min and a maximum head of about 5.7 m.\u003c\/p\u003e\n\u003cp\u003eCF303Y runs on single-phase AC115V at 6.8 A, while the CF313Y variant covers 220V installations. Its slim 205 × 396 × 535 mm footprint installs on or below a laboratory bench, and the unit weighs roughly 30 kg. Country of origin is China. Each circulator ships with a 1 m condensation drain hose, two hose clamps, and two hose nozzles.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefrigerated cooling range:\u003c\/strong\u003e setting range of -20°C to 30°C with no heating function, delivering ~450 W at 10°C and ~330 W at -10°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel fluid path:\u003c\/strong\u003e stainless steel water bath and stainless steel 304 cooling coil resist corrosion in continuous recirculation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital control:\u003c\/strong\u003e Pt100Ω sensor with white LED display, key entry, and 1°C resolution under refrigeration ON-OFF control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-touch connection:\u003c\/strong\u003e rear top-panel swivel L-type connector accepts a 10 mm OD hard tube or 9 mm ID flexible hose on a single line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR452A air-cooled system:\u003c\/strong\u003e 450 W air-cooled refrigeration with up to ~10 L\/min flow and ~5.7 m maximum head.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLayered safety devices:\u003c\/strong\u003e overcurrent ELCB, sensor-failure detection, upper\/lower temperature limit alerts, refrigerator high-pressure cutoff, fan and pump protection, and a refrigerator-protection delay timer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to Choose the Right Circulator \/ Chiller\u003c\/h2\u003e\n\u003cp\u003eSelecting a recirculating chiller comes down to matching cooling output, temperature span, and connection format to your instrument load. Review these axes .\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e confirm the application stays within -20°C to 30°C; this unit cools only and offers no heating function.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling capacity:\u003c\/strong\u003e match heat load to the ~450 W available at 10°C and ~330 W at -10°C so the chiller holds setpoint under continuous duty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBath capacity and flow:\u003c\/strong\u003e a 3.9 L bath with ~10 L\/min flow and ~5.7 m head suits condenser cooling on rotary evaporators and similar loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage and power:\u003c\/strong\u003e choose CF303Y for single-phase AC115V, 6.8 A circuits or CF313Y for 220V sites to fit existing infrastructure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFootprint:\u003c\/strong\u003e verify the slim 205 × 396 × 535 mm body and ~30 kg weight fit on or below your bench.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety requirements:\u003c\/strong\u003e evaluate the built-in ELCB, high-pressure cutoff, sensor-failure detection, and limit alerts against your lab's protection standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e3.9 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e115V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eRefrigerated recirculating water circulator (cooling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling System\u003c\/td\u003e\n\u003ctd\u003eClosed circulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCirculating Medium\u003c\/td\u003e\n\u003ctd\u003eTap water; anti-freeze solution (below 10°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Setting Range\u003c\/td\u003e\n\u003ctd\u003e-20°C to 30°C (no heating function)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Control Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1.0°C (≥0°C); ±1.5°C (\u0026lt;0°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Fluctuation\u003c\/td\u003e\n\u003ctd\u003e2.0°C (≥0°C); 3.0°C (\u0026lt;0°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling Capacity\u003c\/td\u003e\n\u003ctd\u003e~450 W at 10°C; ~330 W at -10°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Flow Rate\u003c\/td\u003e\n\u003ctd\u003e~10 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Head (Lift)\u003c\/td\u003e\n\u003ctd\u003e~5.7 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Ambient Temperature\u003c\/td\u003e\n\u003ctd\u003e5°C to 35°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Control System\u003c\/td\u003e\n\u003ctd\u003eRefrigeration ON-OFF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd\u003ePt100Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController\u003c\/td\u003e\n\u003ctd\u003eWhite LED digital display, key entry, 1°C resolution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefrigeration System\u003c\/td\u003e\n\u003ctd\u003eAir cooling \/ 450 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefrigerant\u003c\/td\u003e\n\u003ctd\u003eR452A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling Coil\u003c\/td\u003e\n\u003ctd\u003eStainless steel 304\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCirculation Connection\u003c\/td\u003e\n\u003ctd\u003eRear top panel, single line; one-touch swivel L-type connector (10 mm OD hard tube or 9 mm ID flexible hose)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Bath Material\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Bath Capacity\u003c\/td\u003e\n\u003ctd\u003e~3.9 L (liquid volume 3.5 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Devices\u003c\/td\u003e\n\u003ctd\u003eOvercurrent ELCB, temperature sensor failure detection, temperature upper\/lower limit alert and error, refrigerator high-pressure cutoff switch, fan motor protection, circulation pump protection, refrigerator-protection delay timer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Dimensions (W×D×H)\u003c\/td\u003e\n\u003ctd\u003e205 × 396 × 535 mm (225 × 434 × 564 mm incl. protrusions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~30 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompact Installation\u003c\/td\u003e\n\u003ctd\u003eSlim footprint installs on or below a laboratory bench\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Combination\u003c\/td\u003e\n\u003ctd\u003eRotary evaporator condenser cooling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Accessories\u003c\/td\u003e\n\u003ctd\u003eCondensation drain hose (1 m), hose clamps (2), hose nozzles (2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Source\u003c\/td\u003e\n\u003ctd\u003eSingle-phase AC115V, 6.8 A (with plug)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAvailable Sizes and Configurations\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCF-303Y\u003c\/td\u003e\n\u003ctd\u003e115V\u003c\/td\u003e\n\u003ctd\u003eEA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCF-313Y\u003c\/td\u003e\n\u003ctd\u003e220V\u003c\/td\u003e\n\u003ctd\u003eEA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eDocumentation\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.yamato-usa.com\/web\/content\/13317\" target=\"_blank\" rel=\"noopener\"\u003eProduct Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.yamato-usa.com\/shop\/yamato-cf-series-refrigerated-water-circulators-64\" target=\"_blank\" rel=\"noopener\"\u003eYamato Scientific Official Product Page\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMore in This Series\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/benchtop-water-circulator-3-4l-cb-100-115v\"\u003eBenchtop Water Circulator 3.4L\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/cooling-water-circulator-16l-cf-802a-115v\"\u003eCooling Water Circulator 16L\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Buy From LabSupplies.com\u003c\/h2\u003e\n\u003cp\u003eLabSupplies.com is an authorized Yamato Scientific dealer, so every Cooling Water Circulator 3.9L ships as a genuine unit backed by the manufacturer warranty. Order directly online and our lab-equipment specialists are ready for any spec question before you commit.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthorized Yamato Scientific dealer:\u003c\/strong\u003e genuine units with full manufacturer warranty coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn stock:\u003c\/strong\u003e ready to ship from USA inventory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage options stocked:\u003c\/strong\u003e CF303Y (115V) and CF313Y (220V) both available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated lab-equipment specialists:\u003c\/strong\u003e direct support for sizing, connection, and compatibility questions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat temperature range does the CF303Y cover?\u003c\/h3\u003e\u003cp\u003eThe CF303Y sets between -20°C and 30°C with no heating function. Control accuracy is ±1.0°C at or above 0°C and ±1.5°C below 0°C, with cooling capacity around 450 W at 10°C and 330 W at -10°C.\u003c\/p\u003e\n\u003ch3\u003eWhat is the bath capacity and how large is the unit?\u003c\/h3\u003e\u003cp\u003eThe water bath holds about 3.9 L with a 3.5 L liquid volume. External dimensions are 205 × 396 × 535 mm (225 × 434 × 564 mm including protrusions), and the unit weighs roughly 30 kg for on-bench or under-bench installation.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between CF303Y and CF313Y?\u003c\/h3\u003e\u003cp\u003eVoltage is the only difference. CF303Y runs on single-phase AC115V at 6.8 A, while CF313Y is the 220V version. Both share the same 3.9 L capacity, -20°C to 30°C range, and cooling performance.\u003c\/p\u003e\n\u003ch3\u003eWhat materials contact the circulating fluid?\u003c\/h3\u003e\u003cp\u003eThe water bath is stainless steel and the cooling coil is stainless steel 304. The circulating medium is tap water, or an anti-freeze solution when operating below 10°C.\u003c\/p\u003e\n\u003ch3\u003eHow does the chiller connect to my instrument?\u003c\/h3\u003e\u003cp\u003eA single circulation line exits the rear top panel through a one-touch swivel L-type connector. It accepts a 10 mm OD hard tube or a 9 mm ID flexible hose, and the unit is recommended for rotary evaporator condenser cooling.\u003c\/p\u003e\n\u003ch3\u003eWhat safety features are built into the circulator?\u003c\/h3\u003e\u003cp\u003eProtection includes an overcurrent ELCB, temperature sensor failure detection, upper and lower temperature limit alerts and errors, a refrigerator high-pressure cutoff switch, fan motor protection, circulation pump protection, and a refrigerator-protection delay timer.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/labsupplies.com\/products\/cooling-water-circulator-3-9l-cf-303y#product\",\n      \"name\": \"Yamato CF303Y Cooling Water Circulator 3.9L\",\n      \"sku\": \"CF-303Y\",\n      \"mpn\": \"CF-303Y\",\n      \"brand\": {\n        \"@type\": \"Brand\",\n        \"name\": \"Yamato Scientific\"\n      },\n      \"manufacturer\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Yamato Scientific\"\n      },\n      \"url\": \"https:\/\/labsupplies.com\/products\/cooling-water-circulator-3-9l-cf-303y\",\n      \"dateModified\": \"2026-06-29\",\n      \"offers\": {\n        \"@type\": \"Offer\",\n        \"priceCurrency\": \"USD\",\n        \"price\": \"2575.00\",\n        \"availability\": \"https:\/\/schema.org\/InStock\",\n        \"url\": \"https:\/\/labsupplies.com\/products\/cooling-water-circulator-3-9l-cf-303y\",\n        \"seller\": {\n          \"@type\": \"Organization\",\n          \"name\": \"LabSupplies.com\"\n        }\n      },\n      \"image\": \"https:\/\/dl.dropboxusercontent.com\/scl\/fo\/02jn6wbbh1yhzaqkcyplw\/h\/CF303Y%20CF313Y.png?rlkey=wtjo5lqeg5sku9a3506qrpssx\",\n      \"description\": \"Yamato CF303Y cooling water circulator: 3.9L bath, -20°C to 30°C range, ~450W cooling, digital control. In stock. Authorized Yamato dealer, ships from USA.\"\n    },\n    {\n      \"@type\": \"BreadcrumbList\",\n      \"itemListElement\": [\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 1,\n          \"name\": \"Home\",\n          \"item\": \"https:\/\/labsupplies.com\/\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 2,\n          \"name\": \"Circulator \/ Chiller\",\n          \"item\": \"https:\/\/labsupplies.com\/collections\/circulator-chiller\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 3,\n          \"name\": \"Yamato CF303Y Cooling Water Circulator 3.9L\",\n          \"item\": \"https:\/\/labsupplies.com\/products\/cooling-water-circulator-3-9l-cf-303y\"\n        }\n      ]\n    },\n    {\n      \"@type\": \"FAQPage\",\n      \"mainEntity\": [\n        {\n          \"@type\": \"Question\",\n          \"name\": \"What temperature range does the CF303Y cover?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"The CF303Y sets between -20°C and 30°C with no heating function. Control accuracy is ±1.0°C at or above 0°C and ±1.5°C below 0°C, with cooling capacity around 450 W at 10°C and 330 W at -10°C.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"What is the bath capacity and how large is the unit?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"The water bath holds about 3.9 L with a 3.5 L liquid volume. External dimensions are 205 × 396 × 535 mm (225 × 434 × 564 mm including protrusions), and the unit weighs roughly 30 kg for on-bench or under-bench installation.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"What is the difference between CF303Y and CF313Y?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Voltage is the only difference. CF303Y runs on single-phase AC115V at 6.8 A, while CF313Y is the 220V version. Both share the same 3.9 L capacity, -20°C to 30°C range, and cooling performance.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"What materials contact the circulating fluid?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"The water bath is stainless steel and the cooling coil is stainless steel 304. The circulating medium is tap water, or an anti-freeze solution when operating below 10°C.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"How does the chiller connect to my instrument?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"A single circulation line exits the rear top panel through a one-touch swivel L-type connector. It accepts a 10 mm OD hard tube or a 9 mm ID flexible hose, and the unit is recommended for rotary evaporator condenser cooling.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"What safety features are built into the circulator?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Protection includes an overcurrent ELCB, temperature sensor failure detection, upper and lower temperature limit alerts and errors, a refrigerator high-pressure cutoff switch, fan motor protection, circulation pump protection, and a refrigerator-protection delay timer.\"\n          }\n        }\n      ]\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Yamato Scientific","offers":[{"title":"115V","offer_id":48693454766312,"sku":"CF-303Y","price":2575.0,"currency_code":"USD","in_stock":true},{"title":"220V","offer_id":48693454799080,"sku":"CF-313Y","price":2575.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/CF303Y_20CF313Y.png?v=1782751590","url":"https:\/\/labsupplies.com\/products\/cooling-water-circulator-3-9l-cf-303y","provider":"LabSupplies.com","version":"1.0","type":"link"}