Product description:
300X slow closed check valve is an intelligent valve installed at the outlet of water pump in water supply system of high-rise buildings and other water supply systems to prevent backflow of medium, water hammer and water hammer, which can effectively improve the safety and reliability of water supply system. The valve will slow open, fast close, slow close eliminate water hammer technical principle integration, prevent the production of pump water hammer and stop pump water hammer. The valve can be automatically opened and closed according to the operation rules of the pump by simply operating the open and close button of the motor of the pump.
Structural features:
300X slow closed check valve is composed of the main valve, one-way valve, needle valve, ball valve, microform filter and pressure gauge hydraulic control pipe system. The main valve can be opened or closed at a proper speed by hydraulic automatic operation. To prevent water impact, so as to slow down the noise. 300X slow closed check valve is controlled by hydraulic power by itself, does not need other devices and energy, easy maintenance, smooth opening and slow closing. 300X slow closed check valve is widely used in high-rise buildings, living areas and other water supply network systems and urban water supply projects.
Working principle:
When the valve feeds water from the inlet, the water enters the main valve control room through the miniature filter, needle valve and one-way valve, and then drains to the downstream through the ball valve. Because the opening of the needle valve is less than the opening of the ball valve, that is, the drainage speed of the control room of the main valve is greater than the inlet speed, so the pressure of the control room decreases, and the inlet pressure acting on the lower end of the main valve disc opens the main valve to supply water to the downstream.
When the pipeline stops water supply, if the downstream water begins to flow back, part of the backflow water enters the main control room through the ball valve. Due to the one-way valve, the backflow water cannot flow out of the main control room, causing the main control room to gradually increase pressure and slowly close the main valve.
The product conforms to the standard: JB/T 10674.

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Main performance parameters

model	Nominal pressure PN	Applicable temperature /°C	Applicable medium
300X-10/16	10、16	0~80	water
300X-10Q~25Q	10~25	0~80	water
300X-10C~25	10~25	0~80	water
300X-10P~25P	10~25	0~80	water

Main overall dimensions

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