On the protection of Henan gas boiler - safety valve (B) 1. Henan gas boiler safety valve must have the following means: ⑴ spring safety valve must lift handle means and preventing movement of the adjustment screw is screwed lightly. ⑵ lever-type safety valve should prevent movement of the self-apparatus and the weight beyond the limitation of the lever guide frame. Means ⑶ weight plate from flying off the safety valve should prevent static weight. 2. For rated steam pressure less than or equal to 3.82MPa boiler safety valve throat diameter of not less than 25mm; the rated steam pressure is greater than 3.82MPa boiler safety valve throat diameter of not less than 20mm. Several valves as mounted on a short tube directly connected with the drum, the passage sectional area of the short tube is not less than 1.25 times the amount of all the area of the exhaust valve. 3. Valve should normally be installed exhaust pipe, exhaust pipe should be as straight outside, and there is sufficient cross-sectional area to ensure smooth exhaust. Exhaust valve to the bottom of the tube should be fitted with a safe place of drainage pipe. On the exhaust pipe and drainage pipe not allow the installation of the valve. 4. Henan gas boiler valve seat throat diameter of not less than 25mm. Bleed tube valve should be installed in the drain pipe does not allow the valve means. Discharge pipe should be through a safe place, and there is sufficient cross-sectional area and freezing measures to ensure the smooth flow of exhaust. 5. Henan and safety valve for the gas boiler maintenance after a new installation, should check the safety valve open start pressure, pressure from the seat and the back seat pressure. Safety valve reseating pressure is usually the beginning of the start pressure 4 to 7%, the maximum does not exceed 10%. When the pressure is less than the beginning of Kai 0.30MPa, back seat a maximum differential pressure of 0.03MPa. The course of the general safety valve should be checked every year. After checking the safety valve, which began Kai pressure, pressure from the seat, back seat pressure calibration results should be recorded in boiler technology files. After the safety valve by check, should be locked or seal, is strictly prohibited heavy object, move the hammer, the spool stuck any other means to increase the pressure relief valve or safety valve open start failure. Henan gas boiler in operation, the safety valve is strictly prohibited splitting. 6. To prevent adhesions safety valve plug and seat, should regularly do manual or automatic safety valve exhaust, turn on the water test.
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Electric boiler protection measures must be taken! Look at your electric boiler has none of these measures: In recent years, more and more users start using large electric boiler heating equipment, surface phenomenon, people began to realize environmental protection, energy saving importance. Fast boiler electric boiler production precisely because there is no combustion chamber and chimney, with a clean environment, no pollution, no noise, automatic, user groups in the widely popular.
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