What is the safety relief valve of the gas water heater?
The safety pressure relief valve of the gas water heater is a safety device with an automatic reset function. It is Installed on the outlet pipe of the gas water heater. When the water heater fails unexpectedly, the valve core of the safety valve opens pressure relief quickly under high temperatures and high pressure, and quickly discharges the gas in the water heater, so as to prevent the water heater from exploding. The safety pressure relief valve is suitable for gas water heaters, oil gas boilers, oil water heaters, and other gas equipment with gas pressure exceeding 1.0MPa, such as gas stoves, liquefied gas stoves, natural gas stoves, steam generators, etc.
Working principle of safety pressure relief valve
The working principle of the safety pressure relief valve is: when the water heater is accidentally flared out and other faults, the valve core of the safety pressure relief valve quickly opens pressure relief under high temperature and high pressure, and quickly discharges the gas in the water heater, so as to prevent the water heater from exploding. Among them, the guide sleeve and gasket play a guiding role. A sealing ring is installed inside the valve body, and the sealing ring is connected to the valve core through the guide sleeve. When the water heater accidentally flames out and other faults, the valve core opens to release pressure, and the pressure is transmitted outward through the sealing ring. When the external pressure is greater than the internal pressure of the water heater, the sealing ring will contract inward, closing the guide sleeve and the valve body. The whole process will not cause damage to the water heater.
Gas water heater safety pressure relief valve installation location
The installation location should be on the outlet pipe of the gas water heater. When installing, pay attention not to crush or bend the outlet pipe, and pay attention to the outlet pipe and the water heater outlet in the same direction to avoid excessive pressure. When installed behind the water heater, the outlet of the gas water heater can be placed on the outlet pipe rather than under the water heater to observe the operation of the safety pressure relief valve or to prevent the water outlet from being blocked when the water heater is replaced.
Safety valve use precautions
1. It is strictly forbidden to use gas water heaters that have exceeded their service life, and the hose connected between gas water heaters and water heaters should also be replaced regularly.
2. It is strictly forbidden to use the safety pressure relief valve of the gas water heater as an ordinary water inlet to prevent the danger of excessive pressure in the pipeline.
3. When using the gas water heater, the user should open the exhaust fan for air change and keep indoor ventilation.
1, the safety pressure relief valve can only be used as an auxiliary means, in the gas water heater accident flameout and other faults, such as can not be troubleshot in time, should close the water heater, and to the professional repair shop for maintenance.
2. In order to ensure the normal work of the safety pressure relief valve, the safety pressure relief valve should be checked regularly (every half a year). If it is found that the spool is rusty or the spring is rusty and broken, it should be replaced in time.
3. In the process of use, if an abnormal sound or large vibration is found in the safety pressure relief valve, stop using the water heater immediately and carry out maintenance.
4. when the safety pressure relief valve fails, should immediately stop using the water heater.