{"title":"TRVs","description":"","products":[{"product_id":"inspiration-large-bore-hp-corner-trv-ls","title":"Inspiration - Large Bore HP - Corner TRV + LS","description":"\u003cp\u003eThis Thermostatic Radiator Valve has a large bore allowing for a higher flow rate compared to conventional radiator valves. The increased bore size produces a higher efficiency of the system and greater control across the radiator. It has a sleek and modern design which will blend nicely with new build and retrofit properties.\u003c\/p\u003e\n\u003cp\u003ePlease note: White TRVs + Lock Shields have paint finishes, please use rubber lined grips when installing.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Inspiration_-_Large_Bore_HP_-_Corner_TRV_LS_36a07620-b1e5-4921-b19f-364a7c69444e.pdf?v=1724921673\" target=\"_blank\" title=\"Inspiration Large Bore HP - Corner TRV and LS\" rel=\"noopener\"\u003eData Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Spire Renewables","offers":[{"title":"Satin Nickel","offer_id":43966461509770,"sku":"SR0601\/0041\/1171","price":33.95,"currency_code":"GBP","in_stock":true},{"title":"Chrome","offer_id":43966497980554,"sku":"SR0601\/0041\/1024","price":22.61,"currency_code":"GBP","in_stock":true},{"title":"Antique Brass","offer_id":43966461575306,"sku":"SR0601\/0041\/1023","price":33.95,"currency_code":"GBP","in_stock":true},{"title":"White","offer_id":43966461608074,"sku":"SR0601\/0041\/1025","price":24.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Inspiration-LargeBoreHP-CornerTRV_LS-SatinNickel_1.jpg?v=1746615190"},{"product_id":"inspiration-large-bore-hp-angled-trv-ls","title":"Inspiration - Large bore HP - Angled TRV + LS","description":"\u003cp\u003eThis Thermostatic Radiator Valve has a large bore allowing for a higher flow rate compared to conventional radiator valves. The increased bore size produces a higher efficiency of the system and greater control across the radiator. It has a sleek and modern design which will blend nicely with new build and retrofit properties.\u003c\/p\u003e\n\u003cp\u003ePlease note: White TRVs + Lock Shields have paint finishes. Please use rubber lined grips when installing.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Inspiration_-_Large_Bore_HP_-_Angled_TRV_LS_9659c6db-cd8d-4c5f-b39d-5178567c9050.pdf?v=1724921587\" target=\"_blank\" title=\"Inspiration Large Bore HP - Angled TRV and LS Data Sheet\" rel=\"noopener\"\u003eData Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Spire Renewables","offers":[{"title":"Satin Nickel","offer_id":43966461640842,"sku":"SR0601\/0041\/1169","price":30.93,"currency_code":"GBP","in_stock":true},{"title":"White","offer_id":43966461673610,"sku":"SR0601\/0041\/1022","price":24.29,"currency_code":"GBP","in_stock":true},{"title":"Antique Brass","offer_id":43966461706378,"sku":"SR0601\/0041\/1021","price":30.93,"currency_code":"GBP","in_stock":true},{"title":"Chrome","offer_id":44022355755146,"sku":"SR0601\/0041\/1170","price":20.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Inspiration-LargeBoreHP-AngledTRV_LS-SatinNickel_1.jpg?v=1746615188"},{"product_id":"inspiration-large-bore-hp-straight-ls-valve-pair","title":"Inspiration - Large Bore HP - Straight LS Valve Pair","description":"\u003cp\u003eThis lock shield valve has a large bore, allowing for a higher flow rate compared to conventional lock shield valves. The Inspiration Lock Shield Valve range comes in Satin Nickel, Chrome, Antique Brass and White, enabling a sleek and aesthetic look which matches the chosen Towel Rail.\u003c\/p\u003e\n\u003cp\u003ePlease note: White TRVs + Lock Shields have paint finishes, please use rubber lined grips when installing.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Inspiration_-_Large_Bore_HP_-_Straight_LS_Valve_Pair_3a7ee3f0-8583-4aac-8f15-fae16a0340e3.pdf?v=1724921747\" target=\"_blank\" title=\"Inspiration Large Bore HP - Straight LS Valve Pair\" rel=\"noopener\"\u003eData Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Spire Renewables","offers":[{"title":"Satin Nickel","offer_id":43966461902986,"sku":"SR0601\/0041\/1028","price":31.4,"currency_code":"GBP","in_stock":true},{"title":"Chrome","offer_id":43966498046090,"sku":"SR0601\/0041\/1027","price":16.45,"currency_code":"GBP","in_stock":true},{"title":"Antique Brass","offer_id":43966461968522,"sku":"SR0601\/0041\/1026","price":28.91,"currency_code":"GBP","in_stock":true},{"title":"White","offer_id":43966462001290,"sku":"SR0601\/0041\/1029","price":18.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Inspiration-LargeBoreHP-StraightLSValvePair-SatinNickel_2.jpg?v=1746615185"},{"product_id":"traditional-large-bore-hp-angled-trv-ls","title":"Traditional - Large Bore HP - Angled TRV + LS","description":"\u003cp data-mce-fragment=\"1\"\u003eThis angled Thermostatic Radiator Valve has a large bore allowing for a higher flow rate compared to conventional radiator valves. The increased bore size produces a higher efficiency of the system and greater control across the radiator. It has a sleek and modern design which will blend nicely with new build and retrofit properties.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Traditional_-_Large_Bore_HP_-_Angled_TRV_LS.pdf?v=1724921797\" title=\"Traditional Large Bore HP - Angled TRV and LS\" rel=\"noopener\" target=\"_blank\"\u003eData Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Spire Renewables","offers":[{"title":"Satin Nickel","offer_id":44013448560778,"sku":"SR0602\/0041\/1035","price":53.75,"currency_code":"GBP","in_stock":true},{"title":"Chrome","offer_id":44013448593546,"sku":"SR0602\/0041\/1036","price":53.75,"currency_code":"GBP","in_stock":true},{"title":"Antique Brass","offer_id":44013448626314,"sku":"SR0602\/0041\/1037","price":53.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Traditional-LargeBoreHP-AngledTRV_LS-SatinNickel_4.jpg?v=1746615124"},{"product_id":"traditional-large-bore-hp-corner-trv-ls","title":"Traditional - Large Bore HP - Corner TRV + LS","description":"\u003cp data-mce-fragment=\"1\"\u003eThis corner Thermostatic Radiator Valve has a large bore allowing for a higher flow rate compared to conventional radiator valves. The increased bore size produces a higher efficiency of the system and greater control across the radiator. It has a sleek and modern design which will blend nicely with new build and retrofit properties.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Traditional_-_Large_Bore_HP_-_Corner_TRV_LS.pdf?v=1724921869\" title=\"Traditional Large Bore HP - Corner TRV and LS\" rel=\"noopener\" target=\"_blank\"\u003eData Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Spire Renewables","offers":[{"title":"Satin Nickel","offer_id":44013448691850,"sku":"SR0602\/0041\/1038","price":57.38,"currency_code":"GBP","in_stock":true},{"title":"Chrome","offer_id":44013448724618,"sku":"SR0602\/0041\/1039","price":57.38,"currency_code":"GBP","in_stock":true},{"title":"Antique Brass","offer_id":44013448757386,"sku":"SR0602\/0041\/1040","price":57.38,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Traditional-LargeBoreHP-CornerTRV_LS-SatinNickel_1.jpg?v=1746615122"},{"product_id":"radiator-optiflow-valve","title":"Radiator OptiFlow Valve","description":"\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance \u0026amp; Efficiency\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximises heat pump performance. Engineered for low-temperature heating systems like air and ground source heat pumps. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePrecise hydraulic balancing. Regulates radiator flow to optimise efficiency and performance. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMore even heat distribution. Ensures consistent warmth across the whole property. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpeeds up commissioning. Visual flow control reduces setup time for installers and HVAC professionals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEasy to Install \u0026amp; Use\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntegrated flow meter. See live flow rates (0.5–5L\/min) without extra tools. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eClear markings with smooth adjustment. Makes balancing fast and reliable. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompact 15mm all-in-one design. Combines a lockshield valve with the flow meter for cleaner installs. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIdeal for installers \u0026amp; enthusiasts. Delivers professional-grade control in a simple format. \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Configurations Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStandalone OptiFlow valve. Pair with your chosen TRV or lockshield. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptiFlow + Danfoss RAS-C² TRV. Adds thermostatic control for precise room temperature management. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptiFlow + Danfoss RLV-D Lockshield. Easy radiator isolation for maintenance or open-zone systems. \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eExtra Installer Advantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThermostatic option enhances comfort. Perfect for bedrooms or high solar gain rooms where temperature precision matters. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDanfoss Lockshield option supports maintenance ease. Bidirectional (Danfoss lock shield valve only) and adjustable with a standard 6mm Allen key. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eEngineered specifically for low-temperature heating systems, our all-in-one 15mm OptiFlow valve delivers precise hydraulic balancing to maximise system efficiency and decrease commissioning times. By regulating flow rate through each radiator, the valve ensures optimal heat distribution throughout the property.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eIt combines a lockshield valve with a visual flow meter that shows real-time flow from 0.5 to 5L\/min (typical range). With clear markings and smooth adjustment, it helps you balance zones for optimal comfort and efficiency. Ideal for installers or HVAC enthusiasts wanting precise control in compact form.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe valve is available in three options:\u003c\/p\u003e\n\u003col\u003e\n\u003cli class=\"MsoNormal\"\u003eStandalone OptiFlow valve to pair with a lockshield or TRV of your choice\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eOptiFlow valve with a Danfoss RAS-C² TRV\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eOptiFlow valve with a Danfodd RLV-D lock shield valve\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe \u003cstrong\u003eDanfoss RAS-C² TRV\u003c\/strong\u003e operates as a good pairing to the OptiFlow valve where further thermostatic \u003cstrong\u003eregulation is required\u003c\/strong\u003e. This pairing would be used commonly on bedrooms (where temperature regulation is vital), rooms with high solar gain, or rooms with secondary heating sources to limit the output of the radiator.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe \u003cstrong\u003eDanfoss RLV-D\u003c\/strong\u003e \u003cstrong\u003elock shield valve \u003c\/strong\u003eis used to isolate the radiator for maintenance or replacement. It is \u003cstrong\u003ebidirectional\u003c\/strong\u003e (Danfoss lock shield valve only) and operated using a standard \u003cb\u003e6mm Allen key\u003c\/b\u003e, ensuring simple and precise adjustment. This would be used on open zone heat pump systems where further thermostatic regulation isn't required.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003ca rel=\"noopener\" title=\"OptiFlow Valve Standalone Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Optiflow_Data_Sheet_Standalone.pdf?v=1766483411\" target=\"_blank\"\u003e\u003cspan style=\"color: rgb(116, 191, 87);\"\u003eOptiFlow Valve Standalone Datasheet\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003ca rel=\"noopener\" title=\"OptiFlow Valve \u0026amp; TRV Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/OptiFlow_Data_Sheet_TRV.pdf?v=1766483412\" target=\"_blank\"\u003e\u003cspan style=\"color: rgb(116, 191, 87);\"\u003eOptiFlow Valve \u0026amp; TRV Datasheet\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"color: rgb(116, 191, 87);\"\u003e\u003ca rel=\"noopener\" title=\"OptiFlow Valve \u0026amp; Lock Shield Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Optiflow_Data_Sheet_Lock_Shield.pdf?v=1766093063\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca rel=\"noopener\" title=\"OptiFlow Valve \u0026amp; Lock Shield Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Optiflow_Data_Sheet_Lock_Shield.pdf?v=1766483412\" target=\"_blank\"\u003eOptiFlow Valve \u0026amp; Lock Shield Datasheet\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"OptiFlow Valve Flowrate Lookup Table\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/OptiFlow_Valve_Flowrate_Lookup_Table.pdf?v=1766012438\" target=\"_blank\"\u003e\u003cspan style=\"color: rgb(116, 191, 87);\"\u003eOptiFlow Valve Flowrate Lookup Table\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Spire Renewables","offers":[{"title":"OptiFlow Valve Only","offer_id":56910452687222,"sku":"SR0601\/0031\/2006","price":12.8,"currency_code":"GBP","in_stock":true},{"title":"OptiFlow Valve with Danfoss RAS-C² TRV","offer_id":56910460027254,"sku":"SR0601\/0031\/2134","price":27.39,"currency_code":"GBP","in_stock":true},{"title":"OptiFlow Valve with Danfoss RLV-D Lock Shield","offer_id":56910469693814,"sku":"SR0601\/0031\/2135","price":19.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0567\/6947\/8794\/files\/Optiflow_1.jpg?v=1769705137"}],"url":"https:\/\/www.spiresupply.co.uk\/collections\/trvs.oembed","provider":"Spire Supply","version":"1.0","type":"link"}