{"product_id":"akv-20-5-042h2029-danfoss-electric-expansion-valve","title":"Vanne d'expansion électrique AKV 20-5 (042H2029) Danfoss","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAKV 20-5 (042H2029)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-capacity, electronically operated expansion valve designed for precise refrigerant injection in large-scale industrial and commercial refrigeration systems. Operating on the Pulse Width Modulation (PWM) principle, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDanfoss 042H2029 (042H2029)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves a critical dual function: it acts as both an expansion device and a liquid line solenoid valve. This integration is essential for B2B applications such as industrial chillers, large-scale cold storage, and supermarket rack systems, where maintaining an exact superheat (SH) is vital for maximizing evaporator efficiency and ensuring compressor safety. The \"Type 5\" designation identifies this model as having the highest capacity within the AKV 20 series framework.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003eThe AKV 20-5 utilizes a robust 13.5 mm actuator system specifically designed for high-frequency cycling. Unlike traditional modulating valves, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e042H2029\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecycles fully open and fully closed; the refrigerant flow is precisely managed by the ratio between the open and closed duration (duty cycle). This mechanical simplicity ensures a hermetic, durable construction capable of withstanding tens of millions of cycles. With a Maximum Working Pressure (PS) of 28 bar (406 psig), it is compatible with a wide range of fluorinated refrigerants (HFC\/HCFC), providing a reliable and fast-acting solution for modern cooling infrastructures.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAKV 20-5 (042H2029)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDanfoss\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eElectric Expansion Valve (PWM)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eActuator System\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e13.5 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Working Pressure (PS)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e28 bar (406 psig)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Test Pressure\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e42 bar\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAmbient Temp Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40 to 50 Celsius (-40 to 122 Fahrenheit)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNC (Normally Closed)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCompatible Refrigerants\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eR404A, R134a, R407C, R507, etc.\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4.5 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.5 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the specific advantages of PWM control for high-capacity evaporators?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn high-capacity systems, PWM control ensures that when the valve is open, the refrigerant velocity remains high. This optimizes the heat transfer coefficient and assists in effective oil return to the compressor, which is often superior to the partial-throttling behavior of traditional mechanical expansion valves.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this valve require an additional solenoid valve for safety?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The AKV 20-5 is a Normally Closed (NC) valve that provides a reliable, hermetic seal when de-energized. This eliminates the need for a separate liquid line solenoid valve, reducing system complexity, potential leak points, and installation costs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the AKV 20-5 handle low-temperature applications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. With an ambient and fluid temperature rating down to -40 Celsius and a moisture-protected 13.5 mm actuator, this valve is ideal for blast freezers and low-temperature cold storage environments.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFiltration and System Cleanliness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDue to the high-frequency cycling of the PWM mechanism, it is mandatory to install a high-quality filter drier (such as the Danfoss DML or DCL series) immediately upstream. Even small particles can cause abrasive wear on the high-capacity orifice or prevent the needle from sealing properly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBrazing Thermal Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDuring the installation of the solder connections, the valve body must be wrapped in a wet cloth. The internal temperature must be kept below 100 Celsius to prevent permanent damage to the precision-engineered seals and the actuator housing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure the solenoid coil (sold separately) matches the output voltage of the Danfoss ADAP-KOOL controller. The coil should be mounted with the cable entry pointing downwards (drip loop) to prevent moisture from traveling into the electrical actuator interface.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Danfoss","offers":[{"title":"Default Title","offer_id":53102414365035,"sku":"042H2029","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/042h2029-wilhrzdugoi.png?v=1776136898","url":"https:\/\/www.plcprotech.com\/fr\/products\/akv-20-5-042h2029-danfoss-electric-expansion-valve","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}