Vertical Swing Check Valve

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FAQ

Circulating water check valve, I want to ask is not greater than DN600, you can use HBH747H hydraulic butterfly valve closed butterfly valve, less than DN600 of HD43X slow butterfly butterfly check valve, what does hydraulic check mean? Need hydraulic?

The opening and closing parts depend on the flow of the medium and the power is turned on or off by itself. The valve that prevents the backflow of the medium is called a check valveThis hydraulic pressure refers to the liquid pressure in the pipeline, not another pressure; the big caliber butterfly valves are small, and the small ones are all one-way valves. Another HB-HV hydraulic check valve, which is used on the oil circuit, the module and the operation circuit, you do not need.

Check valve symbols?

Check valve refers to rely on the flow of the media itself and automatically open and close the valve flap, used to prevent media backflow valve, also known as check valve, one-way valve, counter flow valve, and back pressure valve. The check valve belongs to an automatic valve, whose main function is to prevent the backflow of medium, prevent the reverse of pump and drive motor, and release the container medium.The opening and closing parts depend on the flow of the medium and the power is turned on or off by itself.

To prevent water meter rotation, where should the check valve be installed?

Place it at the top of the water meter, as you can see, near the valve

What happens when the check valve is broken?

Check valve is broken, there will be back water, down pressure, serious will produce pump reversal, burning motor

The check valve for the printer doesn't have any air in it, but it doesn't come out. It still doesn't work

Just change the CISS, change after dozens of photos. There is air in the pipe, the printing document is half a page, and then a check valve is installed. After it is finished, there is no air in the pipe, but it can not be played. The nozzle is not out of water any more. The ink in the ink box is full.When the check valve is installed, you can print the test paper color is correct, but the document is a piece of white paper. No more printing later. Say at least one cartridge problem. Where does the check valve open? No, there's a switchChasing the answerNot quite clear, you change the model, the general print cartridge does not leak, the ink box for the gas hole to open, hose without bubbles, you can print normally.

With no negative pressure water supply, the pump is equipped with a check valve, the construction ring network also needs to install check valve?

With no negative pressure water supply, the pump is equipped with a check valve, the construction ring network also needs to install a check valve, or else the water pump may enter the ring network.

The difference between check valve and check valve

One way valve is also called a check valve, the two is the same kind of valve, meaning the same.

Is it necessary to install a check valve in front of the water meter? Does the water company have a definite requirement?

To install a check valve, or, when the tap water supply, there is water in the pipe will flow back, but the water meter will not reverse, if there is air in the water pipe, this phenomenon continues to cycle, virtually increase the number of water charges