By level-2 control, the supply of water is replenished after the stored water has been used up, assuring a constant supply of fresh water.

The unique closure mechanism realizes complete water shutoff performance and leakage prevention when fully closed.

The pilot valve does not have any minute, fixed restriction passage like a needle valve, and is therefore clog-resistant.

Due to its simple construction, troublesome adjustments are unnecessary. Being excellent in durability and practically maintenance-free, using this valve reduces maintenance costs.

1.

A ball tap with an upper limit ball and a lower limit ball is connected by piping to the pilot valve, and the pilot valve is driven by the opening and closing of the ball tap at the set water levels (HWL and LWL) to automatically adjust the main valve opening and control the water supply at two levels, i.e. shutoff at HWL and starting of supply at LWL.

2.

Even when the water level drops from HWL, the ball tap remains closed due to the toggling mechanism and the main valve is kept in the fully closed condition.
Next, when the water level drops to LWL and the weight of the lower limit ball begins to act, the toggling mechanism is released, causing the ball tap to open and the pressure on the top of the main valve to be released, thereby causing the main valve to become fully open and the water supply to start. The water supply is then continued until the water level reaches HWL and the buoyancy of the upper limit ball reverses the toggling mechanism.

Inlet pressure (Primary pressure)
Max. 1MPa (For JIS 10K standard)

Operating differential pressure
50kPa or more

Level difference between HWL and LWL
Can be set freely

Please refer to Common specifications & Outer dimensions.