{"product_id":"luminor-310120-replacement-uv-sensor-o-ring","title":"Luminor 310120 Replacement UV Sensor O-Ring","description":"\u003cp dir=\"ltr\"\u003eThe 310120 is a genuine Luminor replacement O-ring that seals the UV intensity sensor in its sensor port on the UV chamber. Luminor's 2025 parts catalog lists part 310120 as the O-ring for the UV sensor on all LUMINOR systems, and it is also the O-ring included in the 300016 sensor-port plug kit.\u003c\/p\u003e\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp dir=\"ltr\"\u003eLuminor recommends cleaning the UV sensor every 6-12 months and replacing it every 5 years. Each time the sensor or sensor plug is removed, check this O-ring and replace it if it is flattened, cracked or the sensor port weeps water.\u003c\/p\u003e\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhere it is used\u003c\/strong\u003e\u003c\/p\u003e\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eUV sensor ports on BLACKCOMB 6.1 (LB6) and BLACKCOMB-HO 6.1 (LBH6) systems, which include a UV sensor\u003c\/li\u003e\n\u003cli\u003eBLACKCOMB 5.1 and BLACKCOMB-HO 5.1 systems upgraded with an optional UV sensor\u003c\/li\u003e\n\u003cli\u003eNSF Class A systems such as LBH6-251A and LBH6-401A\u003c\/li\u003e\n\u003cli\u003eThe 300016 sensor-port plug kit (plug 310026, O-ring 310120, nut 390007)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp dir=\"ltr\"\u003eLuminor's RAINIER manual lists a different sensor O-ring (part 310040) for RAINIER systems, so RAINIER owners should check the part number in their manual. Standard BLACKCOMB gland nuts use O-ring 300038 and NSF-validated systems use 300070.\u003c\/p\u003e\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eManufacturer part number: 310120\u003c\/li\u003e\n\u003cli\u003eType: UV sensor-port O-ring\u003c\/li\u003e\n\u003cli\u003eSold individually; UV sensor sold separately\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Luminor","offers":[{"title":"Default Title","offer_id":53304818237621,"sku":"310120","price":3.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0629\/1197\/1509\/files\/luminor-310120-shared-oring-reference-2000x2000-review.webp?v=1789617122","url":"https:\/\/espwaterproducts.com\/products\/luminor-310120-replacement-uv-sensor-o-ring","provider":"ESP Water","version":"1.0","type":"link"}