止回閥
Check valve
止回閥這種類型閥門的作用是只允許介質向一個方向流動，而且阻止反方向流動。通常這種閥門是自動工作的，在一個方向流動的流體壓力作用下，閥瓣打開；流體反方向流動時，由流體壓力和閥瓣的自重合閥瓣作用于閥座，從而切斷流動。
Check valve the function of this type of valve is to only allow the medium to flow in one direction and prevent the flow in the opposite direction. Normally, this valve works automatically. Under the pressure of fluid flowing in one direction, the valve flap opens; When the fluid flows in the opposite direction, the fluid pressure and the self weight of the valve disc act on the valve seat to cut off the flow.
信號蝶閥
Signal butterfly valve
信號蝶閥就是普通蝶閥加了一組信號線并和監視模塊一起連接到消防報警主機，信號（輸入模塊）模塊指示燈常亮是閥門關閉，模塊信號指示燈閃亮是閥門正常打開。消防中的信號蝶閥就是消防管網中的開關，因為消防管網的水必須保持暢通，這樣才能保證滅火的及時性，所以信號蝶閥一旦關閉，信號模塊就會報反饋信息給主機，通知監控消防管網處于關閉狀態。而普通蝶閥的開閉不能通過報警主機得知，只能現場查看。
The signal butterfly valve is an ordinary butterfly valve with a set of signal lines and is connected to the fire alarm host together with the monitoring module. If the indicator light of the signal (input module) module is always on, the valve is closed, and if the indicator light of the module is flashing, the valve is normally opened. The signal butterfly valve in fire fighting is the switch in the fire fighting pipe network. The water in the fire fighting pipe network must be kept unblocked so as to ensure the timeliness of fire fighting. Therefore, once the signal butterfly valve is closed, the signal module will report the feedback information to the host to inform the monitoring center that the fire fighting pipe network is closed. The opening and closing of ordinary butterfly valves can not be known through the alarm host, but can only be checked on site.
閥
Safety valve
閥在系統中起保護作用。當系統壓力超過規定值時，閥打開，將系統中的一部分氣體/流體排入大氣/管道外，使系統壓力不超過允許值，從而保證系統不因壓力過高而發生事故。閥屬于自動閥，平時不需要人去開啟或者關閉，當管道內氣體（液體）壓力超過規定值時，壓力會自動頂開閥上的彈簧裝置，將超壓部分的氣體（液體）排出。
The safety valve plays a safety protection role in the system. When the system pressure exceeds the specified value, the safety valve is opened to discharge part of the gas / fluid in the system into the atmosphere / pipeline, so that the system pressure does not exceed the allowable value, so as to ensure that the system will not have accidents due to the high pressure. The safety valve is an automatic valve. Normally, no person is required to open or close it. When the pressure of gas (liquid) in the pipeline exceeds the specified value, the pressure will automatically open the spring device on the safety valve to discharge the gas (liquid) in the overpressure part.
低泄高封閥
Low relief high seal valve
低泄高封閥的作用是為了防止系統由于驅動氣體泄漏的累積而引起系統的誤動作而在管路中設置的閥門。它安裝在系統啟動管路上，正常情況下處于開啟狀態，只有在進口壓力達到設定壓力時才關閉，其主要作用是排除由于氣源泄漏積低泄高封閥聚在啟動管路內的氣體。輕微泄漏的氣體壓力不足以頂動彈簧，氣體順著彈簧兩邊的出氣孔排出，一旦氣體壓力超過低泄高封閥設定的數值，氣壓頂動彈簧封住出氣孔，保證驅動氣體的壓力能打開啟動氣瓶。
The function of the low leakage high sealing valve is to prevent the system from misoperation due to the accumulation of drive gas leakage. It is installed on the start-up pipeline of the system and is normally open. It is closed only when the inlet pressure reaches the set pressure. Its main function is to remove the gas accumulated in the start-up pipeline due to the leakage of the gas source. The slightly leaked gas pressure is not enough to push the spring, and the gas will be discharged along the air outlets on both sides of the spring. Once the gas pressure exceeds the value set by the low pressure relief high pressure sealing valve, the air pressure pushing spring will seal the air outlet to ensure that the pressure of the driving gas can open the starting gas cylinder.
浮球閥
Float valve
大圓球為空心，密度遠低于水，浮漂始終都要漂在水上，當水面上漲時，浮漂也跟著上升。浮漂上升就帶動連桿也上升。連桿與另一端的閥門相連，當上升到一定位置時，連桿支起橡膠活塞墊，封閉水源。當水位下降時，浮漂也下降，連桿又帶動活塞墊開啟。常用于消防水池和屋頂水箱的補水，到了規定的液位值，自動停止補水。
The large round ball is hollow and its density is far lower than that of water. The float always floats on the water. When the water surface rises, the float also rises. When the float rises, the connecting rod also rises. The connecting rod is connected to the valve at the other end. When it rises to a certain position, the connecting rod supports the rubber piston pad to close the water source. When the water level drops, the float also drops, and the connecting rod drives the piston pad to open. It is commonly used for water replenishment of fire pool and roof water tank. When the specified liquid level is reached, the water replenishment will be automatically stopped.
The above is the detailed introduction of Shanghai Lianggong valve Shandong Sales Office. I hope it will help you. If you have any questions, please contact us. We will provide you with services in a professional manner http://www.szgotta.com.cn
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