Fill valve: Product description: We have all sorts of stylish products for your choice in fill valve. Ballcock style; Advanced adjustable fill valve; Patent pending design with float cup fill valve; Side inlet valve and pressure type; Adjustable fill valve and plug type; Simple side inlet type with EPS float ball etc. We believe our design and products can meet your request. Meanwhile your suggestion will be sincerely welcomed by us at any time. Hoping to cooperate with you! Function summarized: Anti-siphon system; Water lever adjustable depends on your water pressure; Water filled in tank very quick and quiet; Filter to ensure impurities our of valve; Environmental products; Non-pollution and non-corrosion material; Durable material and easy to be cleaned; Water saving, Installed easily also save the space of tank. For more, please never hesitate to require us directly, thank you!