{"id":6624,"date":"2026-07-09T15:35:14","date_gmt":"2026-07-09T07:35:14","guid":{"rendered":"https:\/\/atfits.com\/?post_type=product&p=6624"},"modified":"2026-07-09T15:35:35","modified_gmt":"2026-07-09T07:35:35","slug":"new-original-siemens-mvi422-25-valve-and-actuator-combination","status":"publish","type":"product","link":"https:\/\/atfits.com\/es\/producto\/new-original-siemens-mvi422-25-valve-and-actuator-combination\/","title":{"rendered":"New Original Siemens MVI422.25 valve and actuator combination"},"content":{"rendered":"
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Product Description for Siemens MVI422.25 Integrated Valve\u2011Actuator Assembly<\/h1>\n<\/div>\n
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1. Product Overview<\/h2>\n<\/div>\n
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MVI422.25 is a new\u2011original factory\u2011integrated 2\u2011way zone valve plus electric actuator assembly under Siemens Smart Infrastructure HVAC series. It consists of a DN25 stainless\u2011steel threaded valve body and a compact spring\u2011return electric actuator as one complete unit without separate assembly work on\u2011site\u897f\u95e8\u5b50\u5b98\u65b9…. It is designed for on\u2011off control of chilled\u2011water and hot\u2011water circuits inside fan\u2011coil units, air\u2011handling terminals and room\u2011based heating\u2011cooling systems. The actuator opens the valve by built\u2011in synchronous motor when powered on, and the internal return spring automatically shuts off the valve once power fails to realize fail\u2011safe close status. The unit runs with AC230 V two\u2011position on\u2011off control signals from building automation controllers. It features low\u2011leakage internal rubber flap sealing structure and pre\u2011wired 20\u2011centimeter connecting cable for fast wiring. It is widely applied in office buildings, hotel guest rooms, factory workshops and commercial\u2011building HVAC water\u2011loop systems to realize independent zone\u2011on and zone\u2011off control for energy\u2011saving managementHindustan ….<\/div>\n<\/div>\n
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2. Main Functions<\/h2>\n<\/div>\n
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  1. Two\u2011Position On\u2011Off Control\n
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    The valve opens electrically after receiving AC230 V control signal within 15 seconds; upon power\u2011off, built\u2011in spring closes the valve completely within 10 seconds, ensuring fail\u2011safe shut\u2011down of water flow to avoid over\u2011heating or over\u2011cooling during power\u2011failure conditions\u897f\u95e8\u5b50\u5b98\u65b9….<\/li>\n

  2. Reliable Sealing Performance\n
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    Special rubber flap serves as closing component, matched with O\u2011ring spindle sealing structure. The leakage rate is less than 0.05% of Kvs value to reduce water\u2011medium leakage for long\u2011term running.<\/li>\n

  3. Manual Override Function\n
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    A lockable manual lever can open the valve to nearly 50\u2011percent opening for maintenance, system flushing and emergency inspection. The lever automatically disengages after restoring electric operation to avoid gear damageMade-….<\/li>\n

  4. Anti\u2011Blocking and Overload\u2011Resistant Design\n
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    The synchronous motor and reduction\u2011gear set have built\u2011in over\u2011run protection structure. The motor will not burn out even if the valve reaches fully\u2011closed or fully\u2011opened positions, extending service life against mechanical shocksHindustan ….<\/li>\n

  5. Simple Installation and Wiring\n
    <\/div>\n

    The whole integrated assembly is ready\u2011to\u2011use out\u2011of\u2011box. Rp\u2011threaded connections conform to ISO7\u20111 standard for direct pipe installation without separating actuator and valve body.<\/li>\n

  6. Long\u2011Term Stable Operation\n
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    It can perform hundreds of thousands of opening\u2011closing cycles. The actuator housing adopts metal\u2011shell design for dust\u2011proof performance to adapt to indoor cabinet\u2011mounted environment.<\/li>\n

  7. Optional Auxiliary\u2011Switch Expansion\n
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    An external auxiliary switch can be installed to feed back fully\u2011open or fully\u2011closed status signals to PLC and building controllers for remote monitoring of valve working states.<\/li>\n<\/ol>\n<\/div>\n

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    3. Technical Characteristics<\/h2>\n<\/div>\n
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    \u8868\u683c<\/div>\n
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    Item<\/th>\nSpecific Parameters<\/th>\n<\/tr>\n<\/thead>\n
    Order Number<\/td>\nMVI422.25 (S55310\u2011M109)<\/td>\n<\/tr>\n
    Product Type<\/td>\nDN25 2\u2011way integrated valve\u2011actuator assembly<\/td>\n<\/tr>\n
    Nominal Pressure Class<\/td>\nPN16<\/td>\n<\/tr>\n
    Valve Body Material<\/td>\nStainless\u2011steel 304<\/td>\n<\/tr>\n
    Connection Type<\/td>\nRp1 internal thread (ISO7\u20111 standard)<\/td>\n<\/tr>\n
    Kvs Value<\/td>\n2.5 m\u00b3\/h<\/td>\n<\/tr>\n
    Rated Supply Voltage<\/td>\nAC 230 V, 50\u201160 Hz<\/td>\n<\/tr>\n
    Power Consumption<\/td>\n6.5 VA during operation<\/td>\n<\/tr>\n
    Control Mode<\/td>\nTwo\u2011position on\u2011off control<\/td>\n<\/tr>\n
    Actuation Time<\/td>\n15 s for electric opening; 10 s for spring\u2011return closing<\/td>\n<\/tr>\n
    Allowed Medium Temperature<\/td>\n1 \u2103 to 110 \u2103 for hot\u2011water and chilled\u2011water<\/td>\n<\/tr>\n
    Operating Ambient Temperature<\/td>\n1 \u2103 to +50 \u2103<\/td>\n<\/tr>\n
    Storage\u2011Transport Temperature<\/td>\n\u201125 \u2103 to +70 \u2103<\/td>\n<\/tr>\n
    Protection Class<\/td>\nIP30 for indoor installation<\/td>\n<\/tr>\n
    Mounting Condition<\/td>\nUpright installation with maximum 85\u2011degree inclination<\/td>\n<\/tr>\n
    Cable Configuration<\/td>\nPre\u2011connected 20\u2011centimeter single\u2011core insulated cable<\/td>\n<\/tr>\n
    EMC Compliance<\/td>\nEN61000\u20116\u20112 and EN61000\u20116\u20113<\/td>\n<\/tr>\n
    Certifications<\/td>\nCE and UL approved; Made in Switzerland<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    4. Product Dimensions and Weight<\/h2>\n<\/div>\n
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    \u8868\u683c<\/div>\n
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    Physical Parameter<\/th>\nActual Value<\/th>\n<\/tr>\n<\/thead>\n
    Overall Dimensions (Width \u00d7 Height \u00d7 Depth)<\/td>\n92 mm \u00d7145 mm \u00d776 mm<\/td>\n<\/tr>\n
    Net Weight of Full Assembly<\/td>\nApproximately 1.1 kg<\/td>\n<\/tr>\n
    Gross Weight with Original\u2011Factory Packing<\/td>\nAround 1.45 kg<\/td>\n<\/tr>\n
    Installation Method<\/td>\nThread\u2011connection with water pipeline; screw\u2011fixed actuator housing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    5. Application Scope<\/h2>\n<\/div>\n
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    This integrated valve\u2011actuator assembly is used for closed circulating water\u2011loop HVAC systems. Typical applications include fan\u2011coil units, room\u2011side heating\u2011cooling terminals, small reheating coils, air\u2011handling unit branch pipelines and zone\u2011divided water\u2011supply circuits of commercial buildings and industrial workshops. It controls the water\u2011flow switch for individual rooms to save energy consumption automatically.<\/div>\n<\/div>\n
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    6. Ten Siemens valve\u2011actuator assemblies with similar functions<\/h2>\n<\/div>\n
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    1. MVI421.15: DN15 2\u2011way spring\u2011return valve\u2011actuator with Kvs=2.0 m\u00b3\/h for small\u2011size fan\u2011coil units with limited pipeline space.<\/li>\n
    2. MVI421.20: DN20 version of MVI\u2011series on\u2011off valve assembly with Kvs=2.2 m\u00b3\/h for medium\u2011flow branch pipelines.<\/li>\n
    3. MXI422.25: DN25 three\u2011way mixing\u2011diverting valve\u2011actuator assembly with spring\u2011return design for mixing hot\u2011water and chilled\u2011water circuits.<\/li>\n
    4. MVI422.25\u201101: AC24\u2011V low\u2011voltage version instead of AC230\u2011V for projects adopting building control 24\u2011V power\u2011supply system.<\/li>\n
    5. MVI422.25\u2011S: Variant equipped with built\u2011in auxiliary switch to output valve\u2011state feedback signals to upper\u2011level PLC systems.<\/li>\n
    6. VVI46.25 + SUA21: Separate\u2011type DN25 brass\u2011valve and actuator combination for cost\u2011effective retrofit HVAC projects.<\/li>\n
    7. MVI422.25\u2011HT: High\u2011temperature adapted model allowing medium temperature up to 130 \u2103 for industrial heating\u2011water control loops.<\/li>\n
    8. MVI423.25: Slow\u2011closing variant with extended closing\u2011time to reduce water\u2011hammer effect inside long\u2011distance pipelines.<\/li>\n
    9. MVI422.25\u20117: SIPLUS conformal\u2011coated valve\u2011actuator for high\u2011humidity factory workshops with anti\u2011corrosion performance.<\/li>\n
    10. MVI442.25: 0\u201110 V modulating\u2011type proportional valve\u2011actuator assembly for continuous flow\u2011regulation instead of simple on\u2011off control.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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