{"product_id":"mut-valvola-di-zona-sf-3-3-vie-motorizzata-micro-ritorno-a-molla-5-fili-riscaldamento-e-raffrescamento","title":"MUT 3-way motorized zone valve with microswitch and spring return for hydraulic circuits - SF-3","description":"\u003ch2\u003e\u003cspan style=\"color: #ff8000;\"\u003e\u003cstrong\u003eMotorized three-way zone valve with spring return for hydraulic circuits SF-3 3 WAYS + MICRO (5 wires)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e MAIN FEATURES\u003cbr\u003e SF three-way valves are motorized valves used in applications\u003cbr\u003e system for controlling the flow of hot and cold water.\u003cbr\u003e They are connected as diverter valves in heating systems or\u003cbr\u003e cooling (in non-condensing environment). The ball valve can\u003cbr\u003e assume two operating positions. The valve can be supplied\u003cbr\u003e with the motor head equipped or not with the auxiliary microswitch which is\u003cbr\u003e actuated during valve switching. The valves are equipped with\u003cbr\u003e an external lever for manually positioning the shutter in position\u003cbr\u003e central\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e OPERATION\u003cbr\u003e Without electrical power the valve is positioned as in Fig.1: way A\u003cbr\u003e closed and way B open. The ball valve closes way A under the action of the \u003cbr\u003espring force exerted by the return springs. When the power is turned on\u003cbr\u003e electric the servomotor overcomes the force of the springs and moves the ball from way A to way\u003cbr\u003e B in about 20 seconds and holds it in that position until it is removed\u003cbr\u003e the power supply Fig.2. When the power supply is removed the return springs\u003cbr\u003e bring the shutter back to via A.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e USING THE MANUAL LEVER\u003cbr\u003e On the side of the servomotor there is a lever that\u003cbr\u003e allows you to manually position the shutter\u003cbr\u003e in an intermediate position Fig.3. This results\u003cbr\u003e useful during the emptying and loading phases\u003cbr\u003e of the system. The reset of the lever from normal to\u003cbr\u003e automatic occurs automatically if the\u003cbr\u003e valve is electrically activated\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e THREE-WAY APPLICATION EXAMPLES\u003cbr\u003e The zone room thermostat controls the opening and closing of the\u003cbr\u003e respective SF valves. When there is no demand it removes voltage\u003cbr\u003e to the valve that closes the area and recirculates the water towards the return \u003cbr\u003eboiler. A meter installed as in the diagram allows a\u003cbr\u003e rational distribution of operating costs. It is advisable to balance\u003cbr\u003e the pressure losses in the recirculation pipe in order to avoid\u003cbr\u003e excessive flow rate variations in other circuits during operation\u003cbr\u003e of the valves. NB: Installation with the valve upside down is prohibited,\u003cbr\u003e that is, with the engine cover facing downwards, as it is potentially\u003cbr\u003e collector of any water leaks or condensation.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003ch4\u003e Technical data sheet \u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0599\/9306\/3611\/files\/MUT_ST_SF3_ITA_ING_08_2024.pdf?v=1738331976\" target=\"_blank\"\u003eavailable here\u003c\/a\u003e\n\n\u003c\/h4\u003e","brand":"Mut","offers":[{"title":"3\/4'' F\/F\/F version","offer_id":53895340917084,"sku":"7.001.01787","price":84.9,"currency_code":"EUR","in_stock":true},{"title":"1'' F\/F\/F version","offer_id":53895340949852,"sku":"7.001.01827","price":84.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/9306\/3611\/files\/Senzatitolo-1_ae4d7b1f-bcb2-4a0c-84bc-5440f2667c1e.png?v=1738338973","url":"https:\/\/bricohomeferramenta.it\/en\/products\/mut-valvola-di-zona-sf-3-3-vie-motorizzata-micro-ritorno-a-molla-5-fili-riscaldamento-e-raffrescamento","provider":"Brico Home ","version":"1.0","type":"link"}