{"product_id":"vail-0020009864-pressure-red-valve","title":"VAILLANT 0020009864 PRESSURE REDUCTION VALVE","description":"\u003cp data-end=\"586\" data-start=\"213\"\u003eThe \u003cstrong data-end=\"240\" data-start=\"217\"\u003eVaillant 0020009864\u003c\/strong\u003e is a genuine OEM \u003cstrong data-end=\"286\" data-start=\"258\"\u003epressure reduction valve\u003c\/strong\u003e designed to regulate incoming cold water pressure for compatible Vaillant unvented cylinders, storage combi units, and thermal store systems. This valve ensures the system receives water at a safe, controlled pressure, protecting internal components and maintaining consistent hot water performance.\u003c\/p\u003e\n\u003cp data-end=\"853\" data-start=\"588\"\u003eA faulty pressure reduction valve can cause high system pressure, noisy operation, leaking relief valves, slow hot water flow, or fluctuating performance. Installing this genuine Vaillant replacement ensures stable pressure control and long-term system reliability.\u003c\/p\u003e\n\u003cp data-end=\"874\" data-start=\"855\"\u003e\u003cstrong data-end=\"872\" data-start=\"855\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1324\" data-start=\"875\"\u003e\n\u003cli data-end=\"924\" data-start=\"875\"\u003e\n\u003cp data-end=\"924\" data-start=\"877\"\u003e\u003cstrong data-end=\"922\" data-start=\"877\"\u003eGenuine Vaillant pressure reduction valve\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"977\" data-start=\"925\"\u003e\n\u003cp data-end=\"977\" data-start=\"927\"\u003eRegulates and stabilises incoming water pressure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1040\" data-start=\"978\"\u003e\n\u003cp data-end=\"1040\" data-start=\"980\"\u003eProtects cylinder and system components from over-pressure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1096\" data-start=\"1041\"\u003e\n\u003cp data-end=\"1096\" data-start=\"1043\"\u003eEnsures consistent and efficient hot water delivery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1167\" data-start=\"1097\"\u003e\n\u003cp data-end=\"1167\" data-start=\"1099\"\u003eManufactured to Vaillant’s strict OEM quality and safety standards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1234\" data-start=\"1168\"\u003e\n\u003cp data-end=\"1234\" data-start=\"1170\"\u003eHelps resolve pressure issues, noise \u0026amp; performance instability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1270\" data-start=\"1235\"\u003e\n\u003cp data-end=\"1270\" data-start=\"1237\"\u003eDurable, long-life construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1324\" data-start=\"1271\"\u003e\n\u003cp data-end=\"1324\" data-start=\"1273\"\u003eDirect-fit replacement for professional servicing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"1329\" data-start=\"1326\"\u003e\n\u003ch3 data-end=\"1352\" data-start=\"1331\"\u003e\u003cstrong data-end=\"1352\" data-start=\"1335\"\u003eCompatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"1425\" data-start=\"1353\"\u003eThe \u003cstrong data-end=\"1405\" data-start=\"1357\"\u003eVaillant 0020009864 Pressure Reduction Valve\u003c\/strong\u003e is compatible with:\u003c\/p\u003e\n\u003cul data-end=\"1632\" data-start=\"1427\"\u003e\n\u003cli data-end=\"1471\" data-start=\"1427\"\u003e\n\u003cp data-end=\"1471\" data-start=\"1429\"\u003eSelected \u003cstrong data-end=\"1469\" data-start=\"1438\"\u003eVaillant unvented cylinders\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1514\" data-start=\"1472\"\u003e\n\u003cp data-end=\"1514\" data-start=\"1474\"\u003e\u003cstrong data-end=\"1490\" data-start=\"1474\"\u003eVaillant VUI\u003c\/strong\u003e storage combi systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1546\" data-start=\"1515\"\u003e\n\u003cp data-end=\"1546\" data-start=\"1517\"\u003e\u003cstrong data-end=\"1544\" data-start=\"1517\"\u003eVaillant thermal stores\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1632\" data-start=\"1547\"\u003e\n\u003cp data-end=\"1632\" data-start=\"1549\"\u003eAny appliance listing \u003cstrong data-end=\"1585\" data-start=\"1571\"\u003e0020009864\u003c\/strong\u003e in the official Vaillant parts documentation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1738\" data-start=\"1634\"\u003e\u003cem data-end=\"1738\" data-start=\"1634\"\u003eInstallers should always confirm compatibility using the system’s model-specific manual or parts list.\u003c\/em\u003e\u003c\/p\u003e","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":56695683481945,"sku":null,"price":124.09,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/9738\/1209\/files\/1379438.jpg?v=1764253196","url":"https:\/\/plumbpartsxpressshop.com\/products\/vail-0020009864-pressure-red-valve","provider":"Plumbparts xpress","version":"1.0","type":"link"}