bottom valve 1.Imported material for the fill valve pad. 2.pressure-resistance, anti-siphon design. 3.quiet operation. Bottom valveName: Toilet mechanismItem ... No.: B2-25 Specification:-1. Fixed Bottom-in fill valve, the height is 250mm, optional with 220mm, 280mm ... for G1/2" connector.-4. Imported material for the bottom fill valve, is anti-siphon design, stop water quickly, quiet ...