Ductile Iron Grooved Slow Closing Check Valve G300X-16Q

Product Description

The G300X grooved slow-closing check valve consists of a main valve, a unidirectional check valve, a needle valve, a ball valve, a strainer, and a pressure gauge, forming a hydraulically controlled piping system. Utilizing hydraulic automatic operation, it enables the main valve to open rapidly or close slowly, thereby preventing water hammer and achieving a slow-closing, noise-reducing effect. When water is supplied to the slow-closing check valve from the inlet, it passes through the strainer, needle valve, and check valve into the main valve control chamber, and then flows downstream through the ball valve. Because the needle valve is open less than the ball valve—meaning the outflow rate from the main valve control chamber exceeds the inflow rate—the pressure in the control chamber decreases. The inlet pressure acting on the lower end of the main valve disc opens the main valve to supply water downstream. When water supply to the pipeline stops and backflow from the downstream begins, a portion of the backflow enters the main control chamber via the ball valve. Due to the action of the unidirectional valve, the backflow cannot exit the main control chamber, causing the pressure in the main control chamber to gradually rise and slowly close the main valve.

Performance Features

1. The structure is innovative and well-designed, and it makes effective use of hydraulic principles and control theory.
2. It operates smoothly and reliably, with high flow rates.
3. The valve disc opens quickly and closes slowly, with no water hammer (closing time is adjustable).
4. The check valve provides effective sealing and has a long service life.
5. Easy to install and maintain.

Product Specifications

Product Size Guide