{"product_id":"vail-0020192789-expansion-valve-5k","title":"Vaillant 0020192789 Expansion Valve - 5K","description":"\u003cul data-end=\"1246\" data-start=\"802\"\u003e\n\u003cli data-end=\"1246\" data-start=\"1193\"\u003e\n\u003cp data-end=\"1246\" data-start=\"1195\"\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"1251\" data-start=\"1248\"\u003e\n\u003cp data-start=\"199\" data-end=\"533\"\u003eThe \u003cstrong data-start=\"203\" data-end=\"226\"\u003eVaillant 0020192789\u003c\/strong\u003e is a genuine OEM \u003cstrong data-start=\"244\" data-end=\"266\"\u003e5K expansion valve\u003c\/strong\u003e designed for use in selected Vaillant heat pump and refrigeration-based heating systems. This precision-controlled valve regulates refrigerant flow by responding to evaporator temperature, ensuring optimal system efficiency, stable heat transfer, and safe operation.\u003c\/p\u003e\n\u003cp data-start=\"535\" data-end=\"795\"\u003eA faulty expansion valve can cause poor system performance, reduced heating output, high energy consumption, icing, or system errors. Replacing it with this genuine Vaillant part restores correct refrigerant regulation and ensures reliable long-term operation.\u003c\/p\u003e\n\u003cp data-start=\"797\" data-end=\"816\"\u003e\u003cstrong data-start=\"797\" data-end=\"814\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"817\" data-end=\"1252\"\u003e\n\u003cli data-start=\"817\" data-end=\"869\"\u003e\n\u003cp data-start=\"819\" data-end=\"869\"\u003e\u003cstrong data-start=\"819\" data-end=\"867\"\u003eGenuine Vaillant expansion valve (5K rating)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"870\" data-end=\"910\"\u003e\n\u003cp data-start=\"872\" data-end=\"910\"\u003ePrecisely regulates refrigerant flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"911\" data-end=\"960\"\u003e\n\u003cp data-start=\"913\" data-end=\"960\"\u003eEnhances heat pump efficiency and performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"961\" data-end=\"1021\"\u003e\n\u003cp data-start=\"963\" data-end=\"1021\"\u003eSupports stable evaporator temperature and heat transfer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1022\" data-end=\"1081\"\u003e\n\u003cp data-start=\"1024\" data-end=\"1081\"\u003eManufactured to Vaillant’s strict OEM quality standards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1082\" data-end=\"1154\"\u003e\n\u003cp data-start=\"1084\" data-end=\"1154\"\u003eHelps resolve icing, low output, erratic performance \u0026amp; system faults\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1155\" data-end=\"1195\"\u003e\n\u003cp data-start=\"1157\" data-end=\"1195\"\u003eDurable, high-integrity construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1196\" data-end=\"1252\"\u003e\n\u003cp data-start=\"1198\" data-end=\"1252\"\u003eDirect-fit replacement for professional installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1254\" data-end=\"1257\"\u003e\n\u003ch3 data-start=\"1259\" data-end=\"1280\"\u003e\u003cstrong data-start=\"1263\" data-end=\"1280\"\u003eCompatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1281\" data-end=\"1344\"\u003eThe \u003cstrong data-start=\"1285\" data-end=\"1324\"\u003eVaillant 0020192789 Expansion Valve\u003c\/strong\u003e is compatible with:\u003c\/p\u003e\n\u003cul data-start=\"1346\" data-end=\"1525\"\u003e\n\u003cli data-start=\"1346\" data-end=\"1411\"\u003e\n\u003cp data-start=\"1348\" data-end=\"1411\"\u003eSelected \u003cstrong data-start=\"1357\" data-end=\"1387\"\u003eVaillant heat pump systems\u003c\/strong\u003e, including VWL ranges\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1412\" data-end=\"1525\"\u003e\n\u003cp data-start=\"1414\" data-end=\"1525\"\u003eOther Vaillant refrigeration-based heating units listing \u003cstrong data-start=\"1471\" data-end=\"1485\"\u003e0020192789\u003c\/strong\u003e in their official parts documentation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1527\" data-end=\"1639\"\u003e\u003cem data-start=\"1527\" data-end=\"1639\"\u003eEngineers should always confirm exact compatibility using the system’s service manual or technical data sheet.\u003c\/em\u003e\u003c\/p\u003e","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":56695666934105,"sku":null,"price":64.47,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/9738\/1209\/files\/1386570.jpg?v=1764253886","url":"https:\/\/plumbpartsxpressshop.com\/products\/vail-0020192789-expansion-valve-5k","provider":"Plumbparts xpress","version":"1.0","type":"link"}