How to adjust the pressure reducing valve of water heater

Adjustment methods of pressure relief valve of water heater: First, the pressure relief valve is not adjustable, and the general manufacturer will adjust it directly when leaving the factory, but cannot adjust it by itself; Two: adjustable, the pressure gauge is a reversible valve, which can be adjusted directly from left to right. Nowadays, water heaters are basically household appliances equipped by every household, and their appearance makes our life more convenient and fast. However, although we use water heaters almost every day, we don't know much about water heaters. Do you know how to adjust the pressure relief valve of the water heater? Next, let's take a look. Before solving this problem, let's take a look at what is the pressure reducing valve of water heater. The pressure reducing valve, also called the safety valve, is installed at the water inlet of the water heater. The pressure reducing valve of water heater is a kind of valve which can reduce the inlet pressure to a certain required outlet pressure by adjusting, and automatically keep the outlet pressure stable by relying on the energy of the medium itself. From the point of view of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, changing the flow and kinetic energy of fluid, different pressure losses are generated, so as to achieve the purpose of pressure reduction. Then, depending on the adjustment of the control and adjustment system, the pressure fluctuation behind the valve is balanced with the spring force, and the pressure behind the valve is kept constant within a certain error range. Action principle of pressure reducing valve: The pressure reducing valve mainly reduces the water pressure through the local resistance of the flow passage in the valve. The range of water pressure drop is automatically adjusted by the water pressure difference between the diaphragm connected with the valve disc or the inlet and outlet on both sides of the piston. The principle of constant pressure reduction is controlled by the water pressure ratio of the floating piston in the valve body, and the pressure reduction ratio at the inlet and outlet ends is inversely proportional to the area ratio of the piston at the inlet and outlet sides. This pressure reducing valve works smoothly without vibration; There is no spring in the valve body, so there is no problem of spring corrosion and metal fatigue failure; Good sealing performance, no leakage, reducing both dynamic pressure (when water flows) and static pressure (when the flow rate is 0); In particular, the pressure is reduced without affecting the water flow. Advantages of pressure reducing valve: Although the water flowing through the pressure reducing valve has great head loss, it is still energy-saving as a whole because it reduces the waste of water, makes the system flow distribution reasonable and improves the system layout and working conditions. Because the medium is steam, the pilot piston pressure reducing valve or pilot bellows pressure reducing valve is selected. In order to facilitate operation, adjustment and maintenance, pressure reducing valves should generally be installed on horizontal pipelines. Knowing so much about the pressure relief valve of water heater, let's get back to the topic-how to adjust the pressure relief valve of water heater? The adjustment method of the pressure reducing valve of the water heater is as follows: There are basically two kinds of pressure reducing valves in daily life: 1 and the pressure reducing valve is not adjustable. This kind of pressure reducing valve will be directly adjusted by the general manufacturer when it leaves the factory, and it cannot be adjusted by itself. Because this kind of pressure reducing valve is relatively safe, the price is high and the quality is relatively better. 2. It can be adjusted. The pressure gauge is a reversible valve, which can be adjusted directly from left to right. Domestic ones are generally medium-voltage, so it is best not to adjust them. Hotels use high-pressure valves, which can generally be adjusted. The pressure of liquefied gas in a steel cylinder is generally 3-5 kg/cm2, so it needs decompression to burn on the cooker. The function of the pressure regulator is to reduce the pressure of liquefied gas to about 0.035 kg/cm2. Ordinary civil voltage regulators cannot be adjusted. After reading so many introductions about the pressure reducing valve of water heater, we have a certain understanding and a better understanding of the adjustment of the pressure reducing valve of water heater. So what details should you pay attention to when using a water heater? 1. The water heater should be installed in the correct position and locked on the wall with expansion bolts. Moreover, the hot and cold pipes of the water heater need to be connected separately, so as to avoid the alternation of hot and cold of one pipe, which is easy to damage. In addition, hot and cold water pipes are different, so try not to be universal. 2. Before starting the water heater, be sure to tighten the water mixing valve, and pay attention to put down your hand after opening the water inlet valve to avoid water spraying on your body. At the same time, it is necessary to ensure that there is water in the water tank of the water heater to avoid dry burning and damage to the water heater. 3. The socket for connecting the water heater should be 16A, and the water heater should not be connected to the same socket with other electrical appliances, otherwise it is likely to cause short circuit. And before pressing the power button, be sure to connect the socket of the water heater to avoid sparks from the socket. 4. After connecting the power supply of the water heater, you can see the internal water temperature, and then you can set the problem yourself. When the indicator light is on, it means that the water heater is heating, and when the indicator light is off, it means that the heating is over. In addition, the water heater should not be operated too frequently, otherwise it will easily cause damage. The above is how to adjust the pressure reducing valve of water heater, which can be used as a reference. In our daily use, we must pay attention to cleaning and maintaining the water heater regularly.