The 3/4 inch thread fits the needs of most American homes.
Lead free copper materialThe valve body is made of American standard low lead copper ,and the thread is 3/4 NPT,for most American families. | Pressure relief deviceWhen the pressure of the tap water pipe or the pressure during electric heating exceeds the rated pressure of the safety valve, the safety valve will automatically discharge the excessive pressure by dripping water from the drain hole to ensure that the water heater will not explode due to excessive pressure. | Stainless steel springDurable, corrosion resistant and guaranteed service life. |