{"product_id":"akv-20-3-042h2024-danfoss-electric-expansion-valve","title":"Vanne d'expansion électrique Danfoss AKV 20-3 (042H2024)","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAKV 20-3 (042H2024)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-capacity, electronically operated expansion valve designed for precise liquid injection in large-scale refrigeration plants. Operating on the Pulse Width Modulation (PWM) principle, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDanfoss 042H2024 (042H2024)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as both an expansion device and a solenoid valve, providing a tight shut-off when de-energized. This dual-purpose design is critical for B2B industrial applications such as cold storage warehouses, industrial chillers, and supermarket rack systems, where maintaining an exact superheat (SH) is essential for energy efficiency and compressor safety. The AKV 20-3 is engineered to handle higher mass flow rates than the AKV 20-1\/2 models while maintaining rapid response times.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003eThe AKV 20-3 utilizes a 13.5 mm actuator system and is typically driven by a Danfoss ADAP-KOOL controller. Instead of modulating the needle position, the valve cycles fully open and fully closed at high frequencies; the duration of the \"open\" phase determines the refrigerant flow. This mechanical simplicity allows for a robust, hermetic construction capable of withstanding millions of cycles. With a Maximum Working Pressure (PS) of 28 bar (406 psig), it is compatible with most HFC and HCFC refrigerants. The \"Type 3\" designation indicates a specific orifice capacity within the AKV 20 series, optimized for medium-to-high capacity evaporators.\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 20-3 (042H2024)\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\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\u003eRefrigerant Compatibility\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\u003e4.8 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\u003e6.0 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\u003eHow does PWM control differ from standard modulating expansion valves?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStandard valves move a needle in and out to restrict flow. PWM valves like the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAKV 20-3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecycle between 0% and 100% open. This ensures that the refrigerant velocity is always high when the valve is open, which improves oil return and heat transfer efficiency in the evaporator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this valve require an additional liquid line solenoid?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The AKV 20-3 is a Normally Closed (NC) valve that provides a reliable, tight seal when the power is removed. This eliminates the cost and pressure drop associated with an extra solenoid valve in the liquid line.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the expected service life of the orifice and needle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe AKV series is designed for heavy industrial use. The internal components are made from high-grade materials to ensure a service life of over 50 million cycles, provided the system is kept clean and free of moisture.\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\u003eUpstream Filtration Requirements:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt is mandatory to install a high-quality filter drier (such as the Danfoss DML or DCL series) immediately before the valve. Because the valve cycles rapidly, any metal shavings or debris in the liquid line can damage the valve seat or cause it to stick, leading to \"flooding\" or loss of superheat control.\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 protected from excessive heat. Wrap the body in a wet cloth and ensure that the temperature of the 13.5 mm actuator housing does not exceed 100 Celsius. Overheating will degrade the internal seals and the solenoid coil interface.\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 coil voltage matches the output of your Danfoss AK-CC or AKC controller. The coil must be mounted with the cable entry pointing downwards to prevent moisture from traveling along the wire and into the actuator assembly (drip loop installation).\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":53102410236267,"sku":"042H2024","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/042h2024-gfbyjme3df2.png?v=1776136896","url":"https:\/\/www.plcprotech.com\/fr\/products\/akv-20-3-042h2024-danfoss-electric-expansion-valve","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}