Fire pump is an essential facility in today's city, but many people today know it as a decoration, its function and use of methods is not very understanding, which is extremely detrimental to the disaster. Therefore, it is necessary to understand the operation and use of the fire pump, and will not be panicked when it needs to be used. The following Xiaobian to provide you with fire pump methods and steps used, I hope for your help. Fire pump use seven-step fire pump, there are several steps: 1, after opening, you should first check the motor operating current, including the pump to see the functioning of the function is not normal, in the event of failure, we must immediately stop. 2, observe the pressure gauge, see the pointer on the pressure gauge has been displayed at the rated working pressure, the valve open, wait until it no longer fluctuates, slowly open. In order to ensure safety and long-term use, the instrument should be maintained in all aspects of work stability. 3, when the pump check the water without any failure, the pump on the clutch handle, moved to show "points" place. 4, the pressure of the valve group should be stable, and maintain a certain value, preferably 0,8mpa or so, if the pressure can adhere to, you can normal operation, but if the pressure is difficult to persist, you need to properly regulate exports, so that Pressure to meet the required conditions. 5, the temperature of the pump is very important, including the temperature of the motor bearings, can not be ignored, the maximum temperature can not exceed 75 degrees, so when not in use should always insist to check to ensure that the temperature and operating current are within the normal range . 6, when the pump is stopped, to restore it to its original state, this step can be implemented in accordance with the pump's valve switch indicator. 7, to determine the fire pump stopped there is no other fault, you can clutch handle, move to "fit" position, this time did not fully operate, but also should open the air valve, so that the float restored to reset, ready to be Times use. The above is the specific steps used fire pump, of course, the most important thing is to operate the experiment, learn to use, so that some disaster situations can cope easily. This article is copyrighted industry interconnect (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor: Zeng Fenfen (QQ / micro letter:) starting: http: //beng.liuti.cn / (Service Hotline:)
Lock Washers External Teeth
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Lock washers with external teeth, also known as external tooth lock washers or external serrated lock washers, are a type of fastener used to prevent loosening or rotation of bolts, screws, or other threaded fasteners.
These washers have serrations or teeth on the outer edge, which bite into the mating surface or the underside of the fastener head when tightened. This creates friction and helps to prevent the fastener from loosening due to vibrations or other forces.
The external teeth on these washers are designed to dig into the material, providing a more secure grip compared to regular flat washers. They are commonly used in applications where there is a risk of fastener loosening, such as automotive, machinery, or construction industries.
Lock washers with external teeth are typically made from materials like steel, stainless steel, or other metal alloys. They are available in various sizes and can be used with different types of fasteners, depending on the specific requirements of the application.
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