Brass Check Valve for Water Meter N10161007 is a non-return valve specially designed for water meter, small in size, union nut connection, easy to install with water meter. It's neccessary that a water check valve needs to be installed on the water meter. We also offer brass swing check valve, 2 inch pvc check valve, 4 inch pvc check valve, 15mm double check valve, 1 inch check valve pvc，15mm check valve, 2" brass check valve, brass spring check valve.

Parameters:

• Sizes: 1/2" to 3/4" (DN15 to DN20)

• Working pressure: PN16 / 200WOG

• Working temperature: -10 to 120℃

• Standard bore design

• Sandblasted and nickel-plated

• BSP or NPT threads available

• Customized production acceptable

• Materials: CW617N, HPb57-3, C37700

Features:

• Quick valve disc close and small water hammer pressure

• Both horizontal pipes and vertical pipes can be used, easy to install

• Small follow resistance

• Sensitive action, good sealing performance

• Short disc stroke and small closing impact

• Long life durability and reliable performance

• 100% leakage test for each valve

Parts	Material
Body	Brass
Cap	Brass
Stem	Brass
Spring	Stainless steel
disc	Plastic/brass
Handle	N/A
Handle Spin	N/A

The design of brass check valve for water meter

The brass check valve for water meter is also called the brass check valve and brass non return valve, its function is to prevent the fluid from flowing backward in the event of an accident, to ensure that the fluid flows in a single direction, and to ensure the safety of the pipeline equipment. The brass check valve for water meter consists of brass valve body, disc with spring and the union nut which can rotate 360 degrees.

Applications of brass check valve for water meter

Applicable scope of brass check valve for water meter

1. Ordinary water meter (rotor-type water meter)

2. Intelligent water meters: including IC card water meters, credit card water meters, wireless remote water meters and photoelectric direct reading water meters.

Where brass check valve for water meter installed

Brass water meter check valve is a speical device for water meter, many people wonder it should be installed in the front or the rear of the water meter.

The brass water meter check valve should be installed in front of the water meter. The function of installing the brass water meter check valve in front of the water meter is mainly to ensure the accurate measurement of the water meter and protect the interests of users. Because if there is no brass water meter check valve installed, once the municipal pipeline network stops water, the water potential behind the meter will flow back, but the metering accuracy of the backflow water cannot be guaranteed, and some even affect the normal use accuracy of the water meter.

When the inlet pressure is greater than the sum of the weight of the disc and its flow resistance, the brass water meter check valve is opened. Conversely, the brass water meter check valve is closed when the medium flows back. The brass water meter check valve has a disc that is inclined and can rotate around the axis, and the working principle is similar to that of the brass water meter check valve. The check valve is often used as the bottom valve of the pumping device, which can prevent the backflow of water. The brass water meter check valve is used in combination with the globe valve, which can play the role of safety isolation. The disadvantage is that the resistance is large and the sealing performance is poor when closed.

What is the function of brass check valve for water meter

The function of the brass water meter check valve is to only allow the medium to flow in one direction and prevent the flow in the opposite direction. The brass water meter check valve works automatically. Under the action of the fluid pressure flowing in one direction, the valve disc opens: when the fluid flows in the opposite direction, the fluid pressure and the self-coincident valve disc of the valve disc act on the valve seat, thereby cutting off the flow.

The brass water meter check valve can prevent the backflow of water and prevent the water meter from rotating. In this way, when the pressure increases, the water is compressed, and the water meter rotates positively; when the pressure decreases, the check valve automatically closes, and the water meter does not rotate. When the pressure rises again, as long as the pressure is not higher than the brass water meter check valve pressure, the water meter will not turn again.

Steps to install brass check valve for water meter

1. Before installing brass check valve for water meter, make sure the flow direction is same as the arrow direction on valve body. Incorrect direction may make the valve can't work, even broke the valve and pipeline.

2. Clean and remove any objects from the pipes and water meter (in particular bits of sealing and metal), which could obstruct and block the valves.

3. Ensure that both connecting pipes either side of the valve (upstream and downstream) are aligned (if they are not the brass check valve for water meters may not work correctly).

4. Make sure that the two sections of the pipe (upstream and downstream) match, the brass check valve will not absorb any gaps. Any distortions in the pipes may affect the tightness of the connection, the working of the valve and can even cause a rupture.

5. Scre the union nut with spanner till it's well fitted to the connections.

6. Switch the main water pipeline valve, test the installation with small flow. Enclose no leakage.

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