Size and material: you can connect float valves to the 1/ 4 inch supply tube, you can install an appropriate number of water float valves according to the size of the water tank to meet your needs in different situations; The ball of the water float valve is made of PE material, the other parts are made of POM material, low temperature resistance and corrosion resistance, durable and non-toxic, can serve you for a long time | Adjustable design: the plastic water tank float valves come with adjustable arms, when the water level of the water tank is low, the gate of the float valve opens to ensure that water can enter, when the water level rises, the ball of the water float valve and the adjustable arm will form a flat angle and close in this state, realizing the automatic adjustment of high water level and low water level | Wide applications: the adjustable sink float valve can be applied for ponds, small water tanks, toilet storage tanks, household water purifiers, pools, aquariums, aquaculture, reservoirs, industrial and large water tanks, etc., if needed, you can choose to use multiple float valves at the same time, so that water can be input faster | Easy to operate: the angle of the valve ball is adjustable, you can flexibly set according to the requirements of the water level, automatically control the water level, no power or pump is required, the water float valves are applicable for low pressure gravity water supply systems, hand tightening for leak-free operation | What you receive: 4 pieces of water float valves in white, sufficient quantity can satisfy your daily use, will bring you a nice using experience and bring a lot of convenience to your life