{"product_id":"worc-87170021100-water-valve-complete","title":"Worcester Bosch 87170021100 Water Valve - Si\/Greenstar\/RD","description":"\u003cp data-start=\"69\" data-end=\"792\"\u003eThe Worcester Bosch 87170021100 Water Valve is a genuine replacement hydraulic control component designed to manage the flow of water within your boiler’s internal system. This valve regulates the movement of water between the heat exchanger, central heating circuit and domestic hot-water pathways, helping the boiler respond accurately to demand for heating and hot water. Precise water control supports stable temperatures, reduces noise and protects pumps and other components from stress caused by incorrect flow patterns. A worn, seized or leaking water valve can lead to poor heat distribution, pressure imbalances or fault codes, so fitting the correct OEM-specified valve is essential for dependable performance.\u003c\/p\u003e\n\u003cp data-start=\"794\" data-end=\"1222\"\u003eThis water valve is compatible with Worcester Bosch Si, Greenstar and RD series boilers that specify part number \u003cstrong data-start=\"907\" data-end=\"922\"\u003e87170021100\u003c\/strong\u003e in their technical documentation. To ensure correct fitment and reliable operation, always verify that the part number matches your existing valve or consult your boiler’s service information before installation, as valve designs and connection types vary between models and system configurations.\u003c\/p\u003e\n\u003cp data-start=\"1224\" data-end=\"1640\"\u003eSupplied ready for direct replacement, the 87170021100 Water Valve integrates with the boiler’s existing pipework and actuator interfaces without modification when installed by a qualified engineer. Choosing this genuine Worcester Bosch component helps restore proper water routing, supports efficient heat delivery and contributes to consistent, trouble-free heating and hot-water performance in compatible boilers.\u003c\/p\u003e","brand":"Worcester Bosch","offers":[{"title":"Default Title","offer_id":56695327523161,"sku":null,"price":154.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/9738\/1209\/files\/1019899.jpg?v=1767608091","url":"https:\/\/plumbpartsxpressshop.com\/products\/worc-87170021100-water-valve-complete","provider":"Plumbparts xpress","version":"1.0","type":"link"}