{"product_id":"kohler-silent-fill-toilet-valve-kit-gp1138930-quiet-refill-adjustable-fill-rate-inserts-gray-shank","title":"Kohler Silent Fill Toilet Valve Kit GP1138930 — Quiet refill, adjustable fill-rate inserts (gray shank)","description":"\u003cstrong\u003eThe KOHLER Silent Fill Toilet Valve Kit (GP1138930) is a genuine Kohler fill valve that restores quiet, efficient tank refilling and allows selectable fill rates to balance performance and water use.\u003c\/strong\u003e\n\n\u003cp\u003eIf your Kohler toilet tank is noisy, slow to refill, or you want to maintain original performance after a repair, this authentic Kohler fill valve is engineered to match factory specifications. Designed by Kohler engineers, the kit preserves your toilet’s intended operation and helps protect product warranty when replacing worn or damaged fill components.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this valve make tank refills quieter?\u003c\/h3\u003e\n\u003cp\u003eThe valve uses Kohler’s Silent Fill design to reduce turbulence and mechanical noise as water flows into the toilet tank. That smoother water path and controlled flow minimize the splashing and vibration that cause typical refill noise.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered internal flow passages for reduced noise\u003c\/li\u003e\n  \u003cli\u003eStable valve seating to prevent chatter during refill\u003c\/li\u003e\n  \u003cli\u003eDesigned specifically for Kohler toilet geometries for optimal quiet operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I adjust the fill rate and save water?\u003c\/h3\u003e\n\u003cp\u003eYes — the kit includes multiple fill-rate inserts so you can tune the refill volume and speed to your toilet’s needs. Switching inserts lets you find a balance between fast tank recovery and lower water consumption without changing the entire valve.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSeveral inserts included to fine-tune flow rate\u003c\/li\u003e\n  \u003cli\u003eSimple insert changes allow custom water-use optimization\u003c\/li\u003e\n  \u003cli\u003eMaintains reliable flushing performance when set correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this part fit my Kohler toilet?\u003c\/h3\u003e\n\u003cp\u003eThis fill valve is compatible with most Kohler Class 5 toilets, but fit is determined by the tank shank color. If the tank shank is grey, GP1138930 is the correct part; if it’s black, Kohler’s GP1083167 should be used instead.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for Kohler Class 5 models\u003c\/li\u003e\n  \u003cli\u003eCheck the tank shank color: grey for this kit, black for GP1083167\u003c\/li\u003e\n  \u003cli\u003eSimple swap-in installation for compatible tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance or cleaning should I avoid?\u003c\/h3\u003e\n\u003cp\u003eTo keep the finish and components intact, do not use abrasive brushes, scouring pads, or harsh scrubbing agents on the valve or cap. Gentle wiping with a soft cloth and mild detergent is sufficient for routine cleaning.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCap color may vary without affecting performance\u003c\/li\u003e\n  \u003cli\u003eAvoid abrasive cleaners and pads to protect surfaces and seals\u003c\/li\u003e\n  \u003cli\u003eFollow Kohler Genuine Parts guidance to preserve warranty coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Homeowners, plumbers, and maintenance professionals who own or service Kohler Class 5 toilets and want a direct-fit, factory-designed replacement fill valve. Choose this genuine Kohler kit when you need a quiet refill, the ability to adjust water fill rates, and the assurance of parts engineered to Kohler specifications. Confirm the tank shank color before ordering to ensure correct compatibility and maintain your toilet’s original performance and warranty support.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is GP1138930 compatible with all Kohler toilets?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits most Kohler Class 5 toilets. Verify the tank shank color—use GP1138930 for grey shanks and GP1083167 for black shanks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I reduce water use with this valve?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes multiple fill-rate inserts so you can adjust flow to lower water usage while keeping proper flush performance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Kohler","offers":[{"title":"Default Title","offer_id":52904099807544,"sku":"B003MH314U","price":64.88,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/6799\/6984\/files\/kohler-fill-valve-front-view.jpg?v=1788448120","url":"https:\/\/kelorix.ca\/products\/kohler-silent-fill-toilet-valve-kit-gp1138930-quiet-refill-adjustable-fill-rate-inserts-gray-shank","provider":"Kelorix Canada | Shop Home, Electronics, Beauty, Toys \u0026 More","version":"1.0","type":"link"}