When the water level falls about 2.4 inches (6 cm) from the stopping position, the next water supply starts (2.4 inches (6 cm) difference in water level, so it can prevent vibrations caused by waves. (Use SLW-20 when using pressurized water supply. )
Water level difference 2.4 inches (6 cm) may vary depending on pressure on the primary side. In addition, there is no ability to guarantee a difference in water level under 0.1 MPa.
This valve is a standard type.