Maintaining constant pressure in the installation: Throttle valve

Added: Thursday, 1/4/2024


The throttle valve is a reliable element used in installations. It is primarily used to regulate the flow of the working medium. It is worth learning more about the effective models that are available at Onninen.

Instalacja grzewcza z pompą obiegową i zaworem dławiącym

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How does a throttle valve work?

The throttle check valve is used in pneumatic systems to regulate the flow of the medium. It allows to maintain the appropriate pressure. It should be noted that the method of operation here is very simple. It is based on the pressure difference. It is necessary to know that when the pressure on one side of the valve is higher, the receiver flap opens and allows the flow of the given medium. However, when the pressure increases, the flap closes and blocks the flow. The media flows through the valve channels, as well as the throttle holes. Then the disc is moved until the passage hole is closed.

When the valve is supplied in the opposite direction, the media will flow completely freely. Pay attention to the knob, which allows for control. You should also check the maximum flow of the media. You can decide on a needle valve, which is used in industry wherever precise flow regulation is required. Such valves can be used to control the flow of various liquids, as well as gases, not only in the opposite direction, but in both directions. When choosing throttle check valves, you also need to remember the viscosity of the oil.

Where should the throttle valve be installed?

Thermostatic throttle valve HERZ-ZTB DN20 Properly installed throttle valve affects the effective operation, but also reduces the risk of reverse flow. It is important to know that the flow direction should be checked carefully, so make sure that the arrow on the valve indicates the correct direction. The throttle valve is most often installed directly behind the pump. It should be located before the shut-off valve. In some cases, throttle check valves can be installed at the point of medium return.

When it comes to vertical or horizontal installation, it depends largely on the design. Thanks to it, you don't have to worry about damaging the pump. Using the pressure difference on the throttling element allows you to open or close the flow, but this only happens after exceeding the threshold pressure difference. Remember that individual installation elements cannot press on the body. During installation, you also need to check whether the clearance has not been restricted.

Application of throttle valve in pneumatics

Pneumatics are used on a wide scale. However, in order for pneumatic systems to function properly, not only the medium is needed, but also throttle valves. Thanks to them, the free flow of the medium in one direction is possible. They are an integral part of the pneumatic installation, which means that it is possible to mount a throttle valve on the actuator.

HERZ-ZTB DN15 thermostatic throttle valve with temperature limiter

Thanks to this solution, costs can be reduced and convenient regulation is obtained. The valve ensures free flow of compressed air in one direction. It also allows for throttling in the opposite direction. The additional use of needle valves allows for control of the flow rate and full precision of work. Needle valves in this case are used when the flow rate is low. The needle can be screwed and unscrewed into the socket. Thanks to this, it limits the size of the gap. It also makes the throttling take place in one direction.

Throttle valves are one of the most important elements in a compressed air system. They regulate the speed of the piston rod extension in pneumatic actuators. They can be placed on the body or on the lines, although it must be admitted that the first solution is better, because there is no need to install connectors. It is also easier to make adjustments. Valves regulate the speed of extension. If the flow is turned down to a minimum, their operation will be very slow. They also allow for correction of the actuator's operation. They are used on a large scale in production lines or machines.

Proper throttle valve connection

Connecting a throttle valve is very easy and does not involve high costs. This is due to the fact that the connections are standardized. We can use a combination of two types of connections here. For example, thanks to external threads, the valve can be quickly and easily adapted to the connection in the body, while the plug-in connector allows the assembly of lines when the hose is placed in the connector. Vertical, horizontal, and indirect installation is possible.

Throttle valves in the Onninen offer

In the Onninen offer you will find the HERZ-ZTB DN20 thermostatic throttle valve . It is used for utility water with a circulation pump. There is no need to support it with additional energy. It should be noted that it is resistant to pressure changes. It has automatic distribution of hot water. Of course, when installing on a circulation riser, the flow direction marked on the body must be observed.

The manufacturer has used a strong valve head that responds to temperature increases using a thermostatic element. The thermostatic throttle valve HERTZ-ZTB DN15, temperature limiter is also worth mentioning. It is equipped with a temperature limiter. It will work well for domestic water circulation systems. Also in this model there is no need to support the device with external energy.

Check the throttle valve at the Onninen wholesaler