One、The dimensions of the rinsing tank are generally
1、Categorized by type: high-water tank, low-water tank. Categorized by installation method: wall-mounted, seat-mounted, concealed. Categorized by material: ceramic water tank and glass fiber water tank. For example, the dimensions of a low-water tank toilet tank typically have an inlet diameter of 25mm or 29mm, and a drain diameter of 65mm or 81mm.

2. The vertical distance between the effective working water level of the squat toilet tank and the overflow outlet should not exceed 38mm; the critical water level of the water inlet valve should be higher than the water level of the overflow outlet, and its vertical distance should be no less than 25mm; the lowest point of the gravity flush mechanism of the squat toilet tank should be higher than the overflow water level, and its vertical distance should be no less than 5mm.
Two. Solution for the problem of the water tank being too small
1. The small size of the wash basin may be due to obstructions in the water outlet, such as other components blocking the opening, or debris clogging the drain pipe. Alternatively, obstructions in the water reservoir may impede water flow. In these cases, simply removing the obstructions will resolve the issue.
2. If, after inspecting the areas mentioned above, no foreign objects are found, it is likely that the water valve for the drainage tank is not fully open. In this case, the water valve needs to be adjusted.
3. If the issue persists after inspecting the water valve, we can check if the water level in the flush tank is set too low. If the water level in the flush tank is low, it will result in insufficient water, leading to weak flushing. In this case, we can simply raise the water level.