The upper toilet tank switch fits the Twyford/Siamp Optima 49 drain valve button

Flush button compatibility with 49 valves: Flush button, specially designed for 49 valves, this dual button flush ensures seamless functionality with your existing system, offering efficient use of water and reliable performance.

Toilet push button: with a diameter of 48 mm suitable for standard tank holes (38-42 mm), this toilet push button is easy to install. Simply screw it into the flush valve for a quick replacement.

ABS material for toilet tank: made from high-quality ABS material, this button offers durability and longevity, maintaining its sleek silver appearance while withstanding daily use.

Dual flush operation: Featuring a dual flush capability, this button is perfect for close-coupled tanks, allowing you to choose between a full or half flush to conserve water efficiently.