In the design and production of modern pure water, purified water and ultra-pure water equipment, it is generally necessary to arrange and use inlet control valves before the high-pressure pumps, also need to install a low pressure and high pressure flushing control valve on the wastewater side and a freshwater discharge control valve inside of membrane on the pure water side.

In design, it is customary to use the 220V normally closed solenoid valve. The working principle of solenoid valve determines that the inlet control valve before the high-pressure pump needs to be energized for the solenoid valve coil for a long time, if the equipment is working, the system needs to be continuously energized. Long term operation will accelerate the aging and failure of the solenoid valve coil, resulting in the attenuation of its service life; the characteristics of the solenoid valve's instant start and closing action makes every point where the solenoid valve is used needs to withstand the strike of water hammer.

In the large flow pure water system, usually completes by using electronic butterfly valve with water pump to soft start or variable frequency start, and the process control needs to rely on the programmable controller PLC or time relay to complete. For soft sealed electronic butterfly valve, electronic ball valve and other products, the motor power of the actuator is high, and the actuator is big and heavy. When it is arranged in the pure water system, it must have a large space and adequate strength pipe to support, which increases the burden of equipment design and production cost.

Ultra-pure Water Treatment System

The valve core and seat of Runjing ceramic hard sealing ball valve are made of corundum ceramic or silicon carbide, which are sintered at 1680℃/2200℃ ultra-high temperature and precision machined. The valve core roundness reaches 6μm or less, it rotates relatively with the valve seat that almost completely fits, with low torque and easy opening and closing. It has the characteristics of good wear resistance, good corrosion resistance, durability, good sealing and so on.

Valve Core and Seat of Runjing Ball Valve

The low torque characteristics of Runjing ball valve enables it to set the opening and closing time of the electronic ball valve from 3 seconds to 12 seconds under the condition of only DC 24V safe voltage, to reduce the impact of water hammer, make the equipment run more stable and have a longer life. Due to the torque is very small, the same specification of Runjing ceramic hard sealing ball valve, its actuator size is only 20-30% of other ball valve products, which greatly reduces the size and weight of the actuator and saves costs of production, provide more space for equipment design.

Practical Application Cases

The RO equipment of a manufacturer in Guangdong, adopts multiple sets of Runjing electronic ball valves to meet the requirements that the system cannot produce water hammer or vibration and the ball valves must have high stability.

The ultra-pure equipment of a scientific and technical corporation in Shenzhen, adopts multiple sets of Runjing electronic ball valves, which are small size, easy to install and operation, and meet the needs of users for small size and stable in operation of ball valves.