Compact. Bottom-entry, delayed silent fill valve features top-rotating knob to precisely lower or raise water level by 1mm, avoiding the need to reach inside the cistern. Well-protected float avoids interference with flush valve. Brass nut and shank. Easy to install and clean. Plastic Body & Brass Shank Height: 318mm Suitable for High & Low Pressure Systems Fits Narrow Cisterns with Limited Space for Adjustment Top Knob for Easy Height Adjustment Consistent Flush Volume Under Different Water Pressures Quick-Release Design for Filter Cleaning Plastic Body & Brass Shank Height: 318mm Suitable for High & Low Pressure Systems Fits Narrow Cisterns with Limited Space for Adjustment Top Knob for Easy Height Adjustment Consistent Flush Volume Under Different Water Pressures Quick-Release Design for Filter Cleaning