{"product_id":"watts-f256661-valve","title":"Watts F256661 Valve","description":"\u003cp data-start=\"0\" data-end=\"356\"\u003eThe Watts F256661 140S-3 150\/210 FS is a freeze stat \/ temperature limit control used in HVAC systems to protect coils, heat exchangers, and air handling equipment from low-temperature damage. It functions by monitoring temperature and initiating a control response when conditions approach unsafe levels, helping prevent coil freeze-up and system failure.\u003c\/p\u003e\n\u003cp data-start=\"358\" data-end=\"768\"\u003eIn the field, this type of control is commonly used in air handlers, hydronic coil assemblies, and packaged HVAC units where reliable freeze protection is required. The 150\/210°F operating range supports different staging and safety control strategies depending on the system design. Proper installation and secure sensing contact are critical to ensure accurate temperature response and dependable protection.\u003c\/p\u003e\n\u003cp data-start=\"770\" data-end=\"783\"\u003eKey benefits:\u003c\/p\u003e\n\u003cul data-start=\"784\" data-end=\"1131\"\u003e\n\u003cli data-section-id=\"4o9lck\" data-start=\"784\" data-end=\"849\"\u003eProvides freeze protection for HVAC coils and heat exchangers\u003c\/li\u003e\n\u003cli data-section-id=\"hts3n2\" data-start=\"850\" data-end=\"921\"\u003eHelps prevent equipment damage caused by low-temperature conditions\u003c\/li\u003e\n\u003cli data-section-id=\"1ly435c\" data-start=\"922\" data-end=\"1000\"\u003eFunctions as a temperature limit safety control (aquastat-style operation)\u003c\/li\u003e\n\u003cli data-section-id=\"1g6ngur\" data-start=\"1001\" data-end=\"1061\"\u003eSupports stable HVAC system cycling and protection logic\u003c\/li\u003e\n\u003cli data-section-id=\"1kgy3ba\" data-start=\"1062\" data-end=\"1131\"\u003eReplacement-compatible with Watts 140S-3 style controls (F256661)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1133\" data-end=\"1425\"\u003eCommon questions:\u003cbr\u003eWhat does this part do? It monitors temperature and helps prevent freezing in HVAC systems.\u003cbr data-start=\"1242\" data-end=\"1245\"\u003eWhere is it used? Typically installed on coils, ducts, or air handling equipment.\u003cbr data-start=\"1326\" data-end=\"1329\"\u003eIs it a freeze stat? Yes, it is used for freeze protection and temperature limiting functions.\u003c\/p\u003e\n\u003cp data-start=\"1427\" data-end=\"1617\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eF256661 is the cross for 0256661 \u003c\/span\u003e\u003c\/p\u003e","brand":"Watts","offers":[{"title":"Default Title","offer_id":43061276541106,"sku":"F256661","price":745.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/ac-parts-1000x1000_288ccf18-82e3-4d14-86dc-26606b98eab3.webp?v=1779389431","url":"https:\/\/www.gsistore.com\/en-ca\/products\/watts-f256661-valve","provider":"GSIstore","version":"1.0","type":"link"}