{"product_id":"fluidmaster-valvula-de-llenado-performax-y-flapper-ajustable-2-kit-de-reparacion-k-400h-039-antiobstruccion-y-cierre-hermetico","title":"Fluidmaster PerforMAX Toilet Fill Valve \u0026 2\" Adjustable Flapper Repair Kit — 2\" Flapper, Quieter Fast Refill","description":"\u003cp\u003e\u003cstrong\u003eFluidmaster K-400H-039 is a complete toilet repair kit that replaces a worn fill valve and installs an adjustable 2\" flapper to restore efficient, quiet, and reliable toilet flushing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit pairs Fluidmaster's PerforMAX high-performance fill valve with a 2-inch adjustable flapper to update older or underperforming toilets. It’s engineered to fit most 2\" flush valve openings and to simplify installation with tools-minimal adjustments. The components are designed to reduce common issues like running toilets, noisy refills, and inconsistent flushes without requiring a full tank replacement.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the PerforMAX fill valve improve toilet refilling?\u003c\/h3\u003e\n\u003cp\u003eThe PerforMAX fill valve delivers a faster, steadier refill and reduces vibration and noise compared with many original equipment valves. Its design helps maintain a consistent water level, which lowers the chance of overflow or late refilling that causes nuisance running.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-flow pathway for quicker tank refill\u003c\/li\u003e\n  \u003cli\u003eStable seal to prevent post-flush running\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant materials for longer life\u003c\/li\u003e\n  \u003cli\u003eAdjustable height to fit multiple tank depths\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill the 2\" adjustable flapper stop leaks and ensure full flushes?\u003c\/h3\u003e\n\u003cp\u003eThe included 2-inch flapper is adjustable so you can control the flush volume and stop water from leaking into the bowl. Correctly setting the flapper reduces phantom flushes and helps the toilet deliver consistent flush performance across varying water pressures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdjustable settings to tune flush strength and conservation\u003c\/li\u003e\n  \u003cli\u003eResilient rubber compound for reliable sealing\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard 2\" flush valve openings\u003c\/li\u003e\n  \u003cli\u003eReplaces worn or brittle factory flappers easily\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation for a DIY homeowner?\u003c\/h3\u003e\n\u003cp\u003eInstallation is designed for straightforward DIY replacement: shut off water, drain the tank, remove the old parts, and fit the new fill valve and flapper. The kit includes the main components and clear adjustments so most home plumbers can complete the swap in under an hour with minimal tools.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits most conventional toilets with 2\" flush valves\u003c\/li\u003e\n  \u003cli\u003eTool-light installation—common household tools required\u003c\/li\u003e\n  \u003cli\u003eAdjustable height and float for fine tuning after installation\u003c\/li\u003e\n  \u003cli\u003eStep-by-step adjustments reduce callbacks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance or adjustments should I expect after installing the kit?\u003c\/h3\u003e\n\u003cp\u003eAfter installation, you may need to fine-tune the water level and flapper setting to balance flush power and water use. Routine inspection once or twice a year keeps seals and connections performing well and helps catch mineral buildup in hard-water areas.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdjust tank fill height for optimal bowl refill\u003c\/li\u003e\n  \u003cli\u003ePeriodically check flapper seal for debris or wear\u003c\/li\u003e\n  \u003cli\u003eClean or replace parts if mineral deposits form\u003c\/li\u003e\n  \u003cli\u003eMinor readjustments may be needed with changing water pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Fluidmaster K-400H-039 kit is aimed at homeowners, rental property managers, and DIY plumbers who want a reliable, cost-effective way to fix running toilets, noisy refills, or weak flushes without replacing the entire tank. It’s especially useful for older toilets with a 2\" flush valve that need updated components to restore efficient operation and reduce water waste.\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: Does this kit fit my toilet?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—it's made for toilets with a 2\" flush valve and fits most standard tank depths with its adjustable fill valve.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does installation take?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Most DIYers finish in 30–60 minutes using basic tools and the kit’s adjustable components.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Fluidmaster","offers":[{"title":"Default Title","offer_id":54589042721107,"sku":"B09NYLJ1FZ","price":37.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1095\/4257\/2371\/files\/fluidmaster-frente-empaque.jpg?v=1786728150","url":"https:\/\/findsworth.co.uk\/products\/fluidmaster-valvula-de-llenado-performax-y-flapper-ajustable-2-kit-de-reparacion-k-400h-039-antiobstruccion-y-cierre-hermetico","provider":"Findsworth","version":"1.0","type":"link"}