The priority valve undoubtedly plays a very important role. It affects the safety of the entire installation as well as work efficiency. It should be noted that the valve allows water to flow out when the inlet pressure drops below a certain value. It is worth learning more about it and getting to know the best models from the Onninen wholesaler's offer.
Check out priority valves at the Onninen wholesaler
First connection of the priority valve
Properly performed work is necessary in the water supply system. The priority valve can be installed in installations where there is a need to maintain the inlet pressure at a set level. Providing adequate water pressure affects the operation of the entire installation and enables it to operate effectively. Priority valves protect the pressure in the pipeline. It is worth noting that the input pressure can be adjusted.
In this case, for example, loosening the mounting nut is used. This device starts working when a drop is detected. This will prevent, for example, uncontrolled water outflow. Simultaneous reduction of the output pressure prevents damage to the entire installation, so cutting off the supply to the domestic installation is necessary. The priority valve is open and works as a pressure regulator.
Connecting the impulse cable is not necessary in this case. The use of valves is required by fire protection regulations. In the event of a fire, the use of water shut-off valves is intended to provide better property protection. You also need to know that the valve can be mounted both vertically and horizontally, but also in intermediate positions. It is best to install it directly behind the pump. Sometimes it is necessary to install it in the place of water return.
Where should priority valves be used?
Priority valves affect safety. They should be installed in the branches of the domestic and utility installations, as well as those that cut off the water supply. They will come in handy in the event of a fire or the need to draw water from the water supply system. In this case, it is necessary to ensure priority in the supply of water to services. In irrigated installations, it is an important component of the internal hydrant.
It can be used in installations equipped with a fire protection cap. Then, when a fire occurs, fire hoses are connected. Shut-off valves have specific pressure loss values. Of course, you also need to ensure that they meet quality standards. First of all, the inlet connection should be threaded. In addition, the angle is also important and should not be less than 90 degrees or greater than 135 degrees.
Principle of operation of the priority valve
The installation must be protected against exceeding the set pressure. Using a pressure limiter in the installation ensures that it will function properly. It is worth noting that the priority valve has a really wide range of applications. You don't have to worry about damaging the installation. The priority valve controls the flow in the installation depending on the input pressure. Valves should be used wherever it is possible to limit the inlet pressure and where there is an adequate amount of water. Priority valves limit the pressure at the inlet of the supply network. They may have a built-in solenoid valve. It is used to ensure priority of supplies, e.g. in the event of a fire. The valves can be used in both drinking and industrial water installations. Please note that shut-off valves can be installed in places with limited space.
These priority valves are light in weight but have high control accuracy. So you don't have to worry about fluctuations in the input pressure. Maintaining the set pressure is therefore very easy. There is no need to use energy to operate the valve, so when you decide to purchase such a product, you gain the ability to reduce and maintain the pressure. Therefore, you can cut off the water supply, e.g. to the social and living installation, when the pressure in the fire protection installation begins to drop. Thanks to this, the risk of damage is much lower. Priority valves with pressure regulator are therefore a combination of a pressure regulator and a priority valve. They allow you to maintain pressure. At the same time, they ensure high regulation accuracy and maintaining the required pressure parameters.
An insufficient level may damage the installation, so a priority valve is necessary. This device, when detecting a drop in water pressure inside the fire protection installation, cuts off its flow to the domestic installation. There are also questions, such as whether the check valve quickly reduces the flow. The answer is simple, namely in systems that require constant pressure, check valves ensure constant flow, which translates into better system performance, but also lower energy consumption. The priority valve guarantees the flow of a specific working medium in one direction, which is fixed. With a low torsion value, the valve can be operated very easily, even when the pressure is maximum.
How correctly should the priority valve be set?
The question arises whether installing the valve in a fire protection system is necessary? Of course the answer is yes. The valve is installed to protect the installation, so its use is very important. You also need to remember what proper installation should look like. It should be installed in a place where the inlet pressure must be maintained at a set level. The valve is closed until the inlet pressure reaches a certain value.
Also remember that the valve can be mounted in various positions, from vertical to horizontal to intermediate positions. You need to know that it must be installed in the direction of flow. It should be mounted so as not to burden the body. Additionally, remember to leave adequate clearance. A mesh is used to stop contaminants. Ensuring installation safety and efficiency is required by law. The valve can be installed in any position, provided that the water flow is in the direction indicated by the arrow on the body. Please note that a shut-off valve must be installed on both sides of the control valve.
Before use, the pipeline must be rinsed to remove any contaminants. To start it, you still need to unscrew the adjustment screws. The condition for proper operation is to open the ball valves. Also remember how important the pressure value is, so you should check the pressure gauge located on the pilot valve. To prevent water leakage, it is necessary to use appropriate equipment, which will make the installation safer. Without drainage, water may leak out, which will result in damage to the installation.
The role of priority valves in fire protection of buildings
Typically, valves are used to ensure adequate water pressure supplied to houses, apartments and public buildings. However, when a fire occurs, such valves will provide the appropriate pressure to the fire-fighting system, which reduces losses and allows for faster fire-fighting. Very often, pipes made of plastic are used, which can melt quickly in the event of a fire, but will also result in a reduction in pressure.
The power will then not function properly and the pressure will drop. Therefore, a priority valve is necessary as it will prevent this situation. It controls the pressure at both the inlet and outlet. In the event of a fire, the valve will maintain water pressure. At the same time, it remains closed until the inlet pressure reaches the set value. When it opens, the input pressure is reduced. They can be used in dry risers. For greater safety, a manual opening system is also used, which will work in the event of a power failure. Legal provisions clearly require the use of such valves.
Of course, you can also choose electromagnetic valves, which should be used wherever the medium flow is much higher. They can be controlled manually. Therefore, they are a suitable choice in public places. It is also recommended to perform periodic functional checks. This can be done, for example, during each inspection of the fire protection system. Responsible use of valves affects the safety of people and property, but also limits losses. A safety valve is a non-return valve that protects against exceeding a certain pressure value. It maintains one direction of flow, transmitting the medium so that it does not flow back.
Priority valves at the Onninen wholesaler
The priority valve Resideo Braukmann DH300, DN50 is worth attention. This is a device that is used to control the flow of both water and other types of media. It works on the electromagnetic principle. Provides maximum functionality. It can be controlled remotely. In this case, a special control panel is used, so the operator can change the valve setting, but without the need to be physically present. To meet the needs of the most demanding users, the valve has an alarm function that lets you know when there is a failure or low pressure in the hydrant network. The valve then switches to the second power source. Thanks to this, there is no interruption in system operation.
The BERMAD 730,DN50 priority valve may also be a good choice. It maintains parameters even in the event of a power failure. The valve is hydraulically controlled. This model demonstrates not only mechanical and corrosion resistance, but also resistance to pressure fluctuations. It is necessary when firefighting takes place. It then ensures quick access to water.
The automatic priority valve Danfoss EV220B DN80 3" will also be suitable. It is made of brass and stainless steel. As in previous models, the manufacturer Danfoss used strong and reliable seals. Please note that the permissible differential pressure is up to 16 bar. Thanks to this, this valve can work in really difficult conditions.