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上海龍亞泵閥教你如何使用和維護管道離心泵

新聞來源:油泵 作者:真空泵 點擊數: 更新時間:2021-03-17 15:25:22 收藏此頁
上海龍亞泵閥教你如何使用和維護管道離心泵
泵是工業生產與人們日常生活中常見的一種設備。根據許多使用工況,設備可以分為許多類型。根據其性能的反饋,巨型泵的流量甚Z可以達到幾十萬小時,而微型泵的流量只能達到幾十毫升甚Z更少。因為需要不同,每個泵本身的壓力值也不一樣,大的可能達到19.61MPA以上。泵的主要用途是輸送液體,所以在運行中還有一個關鍵因素,就是液體本身的溫度。根據目前的技術水平,該泵可以承受低Z200℃甚Z更低的液體溫度,以及高達800℃或更高的溫度。
上海鈦龍管道離心泵、立式管道結構高同軸度管道離心泵具有工藝管道附件簡化、流體進出口穩定、軸端密封接近零泄漏、低噪音、高效率、低消耗的特點。鈦龍管道離心泵使用要點:(1)調試工作:檢查接頭是否松動;用手轉動聯軸器轉動轉子,看機組轉動是否靈活,有無異響和重量不均感,從而判斷泵內是否有異物或軸是否彎曲,密封是否安裝不正確等。檢查密封腔內清潔的20號潤滑油是否充滿1/2腔空間;離心泵機組表面是否清潔;單元轉向空載測試。(2)手動啟動:給泵加注(DY次),稍微打開出口閥,啟動電機,當壓力上升時,確認泵機組穩定運行時,出口閥逐漸打開Z工況要求。(3)運行檢查:泵在工頻(變頻)下正常運行時,應定期檢查并記錄泵組的電流表、電壓表、進出口真空計、壓力表和流量計的讀數。機組振動、噪音、溫升是否正常。軸封處不應有明顯的噴氣燃料泄漏。(4)正常停機:關閉排氣閥,使泵輕載,停止電機。(5)緊急停機情況:(1)泵電機工作電流表指示異常(過大或極少);WaterSunny泵系統發出異常噪音。⑵泵進口真空壓力表和出口壓力表指示異常,泵體振動大,發出異常噪音,導致性能嚴重下降。(3)泵電機產生異味,航空油從軸封泄漏,軸承溫度超過75度等。VAREM管道離心泵快速維護要點:1)每運行500小時,松開密封座上的塞子,用注射器抽出腔體內殘留的機油;用合格的20號機械油填充密封腔Z腔容積的一半(檢查加油方法是否合適:運行油泵,油不會流出);擰緊塞子以防泄漏。2)當電機機械噪音增大,軸承溫升異常時,檢查電機軸承的潤滑情況。如果油脂變色或變臟,應及時更換。3)當發現密封座漏油時,可松開密封座上的螺塞,運行油泵。當油出來聞起來像航空油時,可以判斷機械密封無效。停止使用管道泵,以便快速更換機械密封。4)更換失效機械密封的方法:(1)準備好放置泵類零件的工作臺(地面)和拆卸工具,不要亂放,以免損壞泵類零件。(2)拆卸前確認電機處于維護狀態;擰開油塞,用吸管吸出密封座腔內的潤滑油。(3)拆卸拼合聯軸器:先擰松聯軸器的固定六角凹頭螺釘,然后從軸上輕輕拉下聯軸器的一半(注意不要脫落)。用梅花扳手擰松泵軸懸掛螺栓和擋塊,讓葉輪慢慢沉入泵體,拆下ZILMET泵的聯軸器的另一半,取下泵軸擋圈。(4)拆卸密封座:擰松密封座壓緊螺母,輕輕取下密封座(注意:不要弄破密封座上的橡膠油封)并清洗干凈。(5)拆卸清洗軸承座:先將軸承座輕輕松開,然后用拆卸螺栓頂起軸承座,沿泵軸向上提起,卸下;用噴氣燃料清潔軸承和閥座,在安裝前將其干燥,并涂上少量20號機油以進行潤滑保護。(6)拆卸機械密封:抓住密封彈簧,沿泵軸向上提起。(7)機械密封裝配:在動靜環的鏡面上涂一層干凈的20號潤滑油;潤滑導向軸承座,然后將靜環輕輕放入導向軸承座;將潤滑油放在泵軸上,將機械密封的動環部分輕輕安裝在泵軸上,用手輕輕推動密封環,使其能夠自由伸縮(注意動環和靜環的防旋轉部分需要組裝到位)。(8)安裝密封座:先將橡膠油封安裝在密封座上,然后將密封座安裝在泵蓋上,壓在軸承座上,擰緊螺母。(9)聯軸器安裝:SX在電機軸頭上安裝擋圈,安裝聯軸器的一半,然后在泵軸端和聯軸器槽上安裝限位器,用梅花扳手擰緊螺栓(提升泵軸3~5 mm,提供機械密封預應力);然后安裝聯軸器的另一半,并擰上六角凹頭螺釘,該螺釘必須擰緊。安裝聯軸器的正確檢查要求:拼合聯軸器上下間隙均勻;用手轉動聯軸器幾次,檢查轉動是否靈活。(10)根據操作要點,檢查機械密封更換是否正確,泵組運行是否正常。實踐證明,如果按照上述方法正確使用管道離心泵并快速維護,作為停機坪管道加油系統的核心設備,可以保證其正常運行;通過變頻控制,可以充分發揮其運行穩定、高效、節能、持久耐用的優勢。目前,泵的幫助在許多領域都是不可或缺的,如農業、工業等。在農業中,泵的主要功能是用于灌溉和排水。我國的農業用地很廣,所以ZG大多數農村地區離不開泵的幫助。在造船工業領域,一艘遠洋船舶可能需要數百臺泵,需要使用的泵有很多種。給排水等水泵在城市建設中也是不可或缺的。從這些方面不難看出,泵在許多行業和領域都有應用,因此制造泵的行業需要更加專業化和標準化。上海龍亞泵閥專業研發各類多級離心泵、中間泵、長軸泵、凝結水泵、多級鍋爐給水泵、潛水泵、污水泵等。上海龍亞泵閥努力為廣大用戶提供GPZ的泵浦產品。
Shanghai Longya pump valve teaches you how to use and maintain the pipeline centrifugal pump
Pump is a common equipment in industry and even life. According to a lot of evidence, equipment can be divided into many types. According to the feedback of its performance, the flow rate of the giant pump can even reach hundreds of thousands of hours, while the flow rate of the micro pump can only reach tens of milliliters or even less. Because of different requirements, the pressure value of each pump itself is also different, which may reach more than 19.61 MPa. The main purpose of the pump is to transport liquid, so there is also a key factor in the operation, which is the temperature of the liquid itself. According to the current technical level, the pump can withstand liquid temperature as low as 200 ℃ or even lower, and temperature as high as 800 ℃ or higher.
Shanghai Titano pipeline centrifugal pump and vertical pipeline structure high coaxial pipeline centrifugal pump have the characteristics of simplified process pipeline accessories, stable fluid inlet and outlet, shaft end sealing close to zero leakage, low noise, high efficiency and low consumption. Key points of pipeline centrifugal pump: (1) commissioning: check whether the joint is loose; rotate the coupling and rotor by hand to see whether the unit is flexible, whether there is abnormal noise and uneven weight, so as to judge whether there is foreign matter in the pump, whether the shaft is bent, whether the seal is installed incorrectly, etc. Check whether the clean No. 20 lubricating oil in the sealing chamber fills 1 / 2 of the chamber space; whether the surface of the pump unit is clean; unit steering no-load test. (2) Manual start: fill the pump (the first time), slightly open the outlet valve, start the motor, when the pressure rises, confirm the stable operation of the pump unit, gradually open the outlet valve to the working condition requirements. (3) Operation inspection: when the pump is in normal operation under power frequency (frequency conversion), the readings of ammeter, voltmeter, inlet and outlet vacuum gauge, pressure gauge and flowmeter of the pump set shall be regularly checked and recorded. Whether the vibration, noise and temperature rise of the unit are normal. There should be no obvious leakage of jet fuel at the shaft seal. (4) Normal shutdown: close the exhaust valve, make the pump light load, stop the motor. (5) Emergency shutdown: (1) abnormal indication of pump motor working ammeter (too large or very few); abnormal noise from watersunny pump system. (2) the indication of the vacuum pressure gauge at the inlet and outlet of the pump is abnormal, the pump body vibrates greatly and makes abnormal noise, which leads to serious performance degradation. (3) The pump motor has peculiar smell, the aviation oil leaks from the shaft seal, and the bearing temperature exceeds 75 ℃. The main points of rapid maintenance of varem pipeline centrifugal pump are as follows: 1) loosen the plug on the sealing seat every 500 hours, and use a syringe to extract the residual oil in the cavity; fill the sealing cavity to half of the cavity volume with qualified No. 20 mechanical oil (check whether the refueling method is appropriate: the oil will not flow out when the oil pump is running); tighten the plug to prevent leakage. 2) When the mechanical noise of the motor increases and the bearing temperature rises abnormally, check the lubrication of the motor bearing. If the grease is discolored or dirty, it should be replaced in time. 3) When oil leakage is found in the sealing seat, the screw plug on the sealing seat can be loosened to run the oil pump. When the oil comes out and smells like aviation oil, it can be judged that the mechanical seal is invalid. Stop using the pipe pump to replace the mechanical seal quickly. 4) Methods to replace the failed mechanical seal: (1) prepare the workbench (ground) and disassembly tools for placing pump parts, and do not place them randomly, so as to avoid damaging pump parts. (2) Before disassembly, make sure that the motor is in the maintenance state; screw off the oil plug and suck out the lubricating oil in the sealing seat cavity with the suction pipe. (3) Disassembly of split coupling: first loosen the fixed hexagon socket head screw of the coupling, and then gently pull down half of the coupling from the shaft (be careful not to fall off). Use a ring wrench to loosen the suspension bolt and stop of the pump shaft, let the impeller sink into the pump body slowly, remove the other half of the coupling of zilmet pump, and remove the pump shaft retaining ring. (4) Remove the seal seat: loosen the compression nut of the seal seat, gently remove the seal seat (Note: do not break the rubber oil seal on the seal seat) and clean it. (5) Remove and clean the bearing seat: loosen the bearing seat slightly, lift the bearing seat with the removal bolt, lift it up along the axial direction of the pump and remove it; clean the bearing and valve seat with jet fuel, dry them before installation, and apply a small amount of 20 oil for lubrication protection. (6) Disassembly of mechanical seal: grasp the seal spring and lift it up along the axial direction of the pump. (7) Mechanical seal assembly: apply a layer of clean 20 lubricating oil on the mirror surface of the dynamic and static rings; lubricate the guide bearing seat, and then put the static ring into the guide bearing seat gently; put the lubricating oil on the pump shaft, install the dynamic ring part of the mechanical seal on the pump shaft gently, and push the seal ring gently by hand to make it retract freely (note that the anti rotation parts of the dynamic and static rings need to be assembled in place) )。 (8) Installation of sealing seat: first install the rubber oil seal on the sealing seat, then install the sealing seat on the pump cover, press it on the bearing seat, and tighten the nut. (9) Coupling installation: first install the retaining ring on the motor shaft head, install half of the coupling, then install the limiter on the pump shaft end and coupling groove, and tighten the bolts with a ring wrench (lift the pump shaft by 3 ~ 5 mm to provide mechanical seal prestress); then install the other half of the coupling, and screw on the hexagon socket head screw, which must be tightened. The correct inspection requirements for the installation of the coupling: the upper and lower clearance of the split coupling is even; rotate the coupling several times by hand to check whether the rotation is flexible. (10) According to the operation points, check whether the mechanical seal is replaced correctly and whether the pump unit operates normally. Practice has proved that if the above method is used correctly and maintained quickly, as the core equipment of the apron Pipeline Refueling System, it can ensure its normal operation; through frequency conversion control, it can give full play to its advantages of stable operation, high efficiency, energy saving and durability. At present, the help of pump is indispensable in many fields, such as agriculture, industry and so on. In agriculture, the main function of the pump is for irrigation and drainage. China's agricultural land is very wide, so most of China's rural areas can not do without the help of pumps. In the shipbuilding industry, an ocean going ship may need hundreds of pumps, and there are many kinds of pumps. Water supply and drainage pumps are also indispensable in urban construction. It is not difficult to see from these aspects that pumps are used in many industries and fields, so the industry of manufacturing pumps needs to be more professional and standardized. Shanghai Longya pump valve specializes in the research and development of various types of multi-stage centrifugal pumps, intermediate pumps, long shaft pumps, condensate pumps, multi-stage boiler feed pumps, submersible pumps, sewage pumps, etc. Shanghai Longya pump valve strives to provide high quality pump products for the majority of users.

上海龍亞泵閥教你如何使用和維護管道離心泵

新聞來源:油泵 作者:真空泵 點擊數: 更新時間:2021-03-17 15:25:22 收藏此頁
上海龍亞泵閥教你如何使用和維護管道離心泵
泵是工業生產與人們日常生活中常見的一種設備。根據許多使用工況,設備可以分為許多類型。根據其性能的反饋,巨型泵的流量甚Z可以達到幾十萬小時,而微型泵的流量只能達到幾十毫升甚Z更少。因為需要不同,每個泵本身的壓力值也不一樣,大的可能達到19.61MPA以上。泵的主要用途是輸送液體,所以在運行中還有一個關鍵因素,就是液體本身的溫度。根據目前的技術水平,該泵可以承受低Z200℃甚Z更低的液體溫度,以及高達800℃或更高的溫度。
上海鈦龍管道離心泵、立式管道結構高同軸度管道離心泵具有工藝管道附件簡化、流體進出口穩定、軸端密封接近零泄漏、低噪音、高效率、低消耗的特點。鈦龍管道離心泵使用要點:(1)調試工作:檢查接頭是否松動;用手轉動聯軸器轉動轉子,看機組轉動是否靈活,有無異響和重量不均感,從而判斷泵內是否有異物或軸是否彎曲,密封是否安裝不正確等。檢查密封腔內清潔的20號潤滑油是否充滿1/2腔空間;離心泵機組表面是否清潔;單元轉向空載測試。(2)手動啟動:給泵加注(DY次),稍微打開出口閥,啟動電機,當壓力上升時,確認泵機組穩定運行時,出口閥逐漸打開Z工況要求。(3)運行檢查:泵在工頻(變頻)下正常運行時,應定期檢查并記錄泵組的電流表、電壓表、進出口真空計、壓力表和流量計的讀數。機組振動、噪音、溫升是否正常。軸封處不應有明顯的噴氣燃料泄漏。(4)正常停機:關閉排氣閥,使泵輕載,停止電機。(5)緊急停機情況:(1)泵電機工作電流表指示異常(過大或極少);WaterSunny泵系統發出異常噪音。⑵泵進口真空壓力表和出口壓力表指示異常,泵體振動大,發出異常噪音,導致性能嚴重下降。(3)泵電機產生異味,航空油從軸封泄漏,軸承溫度超過75度等。VAREM管道離心泵快速維護要點:1)每運行500小時,松開密封座上的塞子,用注射器抽出腔體內殘留的機油;用合格的20號機械油填充密封腔Z腔容積的一半(檢查加油方法是否合適:運行油泵,油不會流出);擰緊塞子以防泄漏。2)當電機機械噪音增大,軸承溫升異常時,檢查電機軸承的潤滑情況。如果油脂變色或變臟,應及時更換。3)當發現密封座漏油時,可松開密封座上的螺塞,運行油泵。當油出來聞起來像航空油時,可以判斷機械密封無效。停止使用管道泵,以便快速更換機械密封。4)更換失效機械密封的方法:(1)準備好放置泵類零件的工作臺(地面)和拆卸工具,不要亂放,以免損壞泵類零件。(2)拆卸前確認電機處于維護狀態;擰開油塞,用吸管吸出密封座腔內的潤滑油。(3)拆卸拼合聯軸器:先擰松聯軸器的固定六角凹頭螺釘,然后從軸上輕輕拉下聯軸器的一半(注意不要脫落)。用梅花扳手擰松泵軸懸掛螺栓和擋塊,讓葉輪慢慢沉入泵體,拆下ZILMET泵的聯軸器的另一半,取下泵軸擋圈。(4)拆卸密封座:擰松密封座壓緊螺母,輕輕取下密封座(注意:不要弄破密封座上的橡膠油封)并清洗干凈。(5)拆卸清洗軸承座:先將軸承座輕輕松開,然后用拆卸螺栓頂起軸承座,沿泵軸向上提起,卸下;用噴氣燃料清潔軸承和閥座,在安裝前將其干燥,并涂上少量20號機油以進行潤滑保護。(6)拆卸機械密封:抓住密封彈簧,沿泵軸向上提起。(7)機械密封裝配:在動靜環的鏡面上涂一層干凈的20號潤滑油;潤滑導向軸承座,然后將靜環輕輕放入導向軸承座;將潤滑油放在泵軸上,將機械密封的動環部分輕輕安裝在泵軸上,用手輕輕推動密封環,使其能夠自由伸縮(注意動環和靜環的防旋轉部分需要組裝到位)。(8)安裝密封座:先將橡膠油封安裝在密封座上,然后將密封座安裝在泵蓋上,壓在軸承座上,擰緊螺母。(9)聯軸器安裝:SX在電機軸頭上安裝擋圈,安裝聯軸器的一半,然后在泵軸端和聯軸器槽上安裝限位器,用梅花扳手擰緊螺栓(提升泵軸3~5 mm,提供機械密封預應力);然后安裝聯軸器的另一半,并擰上六角凹頭螺釘,該螺釘必須擰緊。安裝聯軸器的正確檢查要求:拼合聯軸器上下間隙均勻;用手轉動聯軸器幾次,檢查轉動是否靈活。(10)根據操作要點,檢查機械密封更換是否正確,泵組運行是否正常。實踐證明,如果按照上述方法正確使用管道離心泵并快速維護,作為停機坪管道加油系統的核心設備,可以保證其正常運行;通過變頻控制,可以充分發揮其運行穩定、高效、節能、持久耐用的優勢。目前,泵的幫助在許多領域都是不可或缺的,如農業、工業等。在農業中,泵的主要功能是用于灌溉和排水。我國的農業用地很廣,所以ZG大多數農村地區離不開泵的幫助。在造船工業領域,一艘遠洋船舶可能需要數百臺泵,需要使用的泵有很多種。給排水等水泵在城市建設中也是不可或缺的。從這些方面不難看出,泵在許多行業和領域都有應用,因此制造泵的行業需要更加專業化和標準化。上海龍亞泵閥專業研發各類多級離心泵、中間泵、長軸泵、凝結水泵、多級鍋爐給水泵、潛水泵、污水泵等。上海龍亞泵閥努力為廣大用戶提供GPZ的泵浦產品。
Shanghai Longya pump valve teaches you how to use and maintain the pipeline centrifugal pump
Pump is a common equipment in industry and even life. According to a lot of evidence, equipment can be divided into many types. According to the feedback of its performance, the flow rate of the giant pump can even reach hundreds of thousands of hours, while the flow rate of the micro pump can only reach tens of milliliters or even less. Because of different requirements, the pressure value of each pump itself is also different, which may reach more than 19.61 MPa. The main purpose of the pump is to transport liquid, so there is also a key factor in the operation, which is the temperature of the liquid itself. According to the current technical level, the pump can withstand liquid temperature as low as 200 ℃ or even lower, and temperature as high as 800 ℃ or higher.
Shanghai Titano pipeline centrifugal pump and vertical pipeline structure high coaxial pipeline centrifugal pump have the characteristics of simplified process pipeline accessories, stable fluid inlet and outlet, shaft end sealing close to zero leakage, low noise, high efficiency and low consumption. Key points of pipeline centrifugal pump: (1) commissioning: check whether the joint is loose; rotate the coupling and rotor by hand to see whether the unit is flexible, whether there is abnormal noise and uneven weight, so as to judge whether there is foreign matter in the pump, whether the shaft is bent, whether the seal is installed incorrectly, etc. Check whether the clean No. 20 lubricating oil in the sealing chamber fills 1 / 2 of the chamber space; whether the surface of the pump unit is clean; unit steering no-load test. (2) Manual start: fill the pump (the first time), slightly open the outlet valve, start the motor, when the pressure rises, confirm the stable operation of the pump unit, gradually open the outlet valve to the working condition requirements. (3) Operation inspection: when the pump is in normal operation under power frequency (frequency conversion), the readings of ammeter, voltmeter, inlet and outlet vacuum gauge, pressure gauge and flowmeter of the pump set shall be regularly checked and recorded. Whether the vibration, noise and temperature rise of the unit are normal. There should be no obvious leakage of jet fuel at the shaft seal. (4) Normal shutdown: close the exhaust valve, make the pump light load, stop the motor. (5) Emergency shutdown: (1) abnormal indication of pump motor working ammeter (too large or very few); abnormal noise from watersunny pump system. (2) the indication of the vacuum pressure gauge at the inlet and outlet of the pump is abnormal, the pump body vibrates greatly and makes abnormal noise, which leads to serious performance degradation. (3) The pump motor has peculiar smell, the aviation oil leaks from the shaft seal, and the bearing temperature exceeds 75 ℃. The main points of rapid maintenance of varem pipeline centrifugal pump are as follows: 1) loosen the plug on the sealing seat every 500 hours, and use a syringe to extract the residual oil in the cavity; fill the sealing cavity to half of the cavity volume with qualified No. 20 mechanical oil (check whether the refueling method is appropriate: the oil will not flow out when the oil pump is running); tighten the plug to prevent leakage. 2) When the mechanical noise of the motor increases and the bearing temperature rises abnormally, check the lubrication of the motor bearing. If the grease is discolored or dirty, it should be replaced in time. 3) When oil leakage is found in the sealing seat, the screw plug on the sealing seat can be loosened to run the oil pump. When the oil comes out and smells like aviation oil, it can be judged that the mechanical seal is invalid. Stop using the pipe pump to replace the mechanical seal quickly. 4) Methods to replace the failed mechanical seal: (1) prepare the workbench (ground) and disassembly tools for placing pump parts, and do not place them randomly, so as to avoid damaging pump parts. (2) Before disassembly, make sure that the motor is in the maintenance state; screw off the oil plug and suck out the lubricating oil in the sealing seat cavity with the suction pipe. (3) Disassembly of split coupling: first loosen the fixed hexagon socket head screw of the coupling, and then gently pull down half of the coupling from the shaft (be careful not to fall off). Use a ring wrench to loosen the suspension bolt and stop of the pump shaft, let the impeller sink into the pump body slowly, remove the other half of the coupling of zilmet pump, and remove the pump shaft retaining ring. (4) Remove the seal seat: loosen the compression nut of the seal seat, gently remove the seal seat (Note: do not break the rubber oil seal on the seal seat) and clean it. (5) Remove and clean the bearing seat: loosen the bearing seat slightly, lift the bearing seat with the removal bolt, lift it up along the axial direction of the pump and remove it; clean the bearing and valve seat with jet fuel, dry them before installation, and apply a small amount of 20 oil for lubrication protection. (6) Disassembly of mechanical seal: grasp the seal spring and lift it up along the axial direction of the pump. (7) Mechanical seal assembly: apply a layer of clean 20 lubricating oil on the mirror surface of the dynamic and static rings; lubricate the guide bearing seat, and then put the static ring into the guide bearing seat gently; put the lubricating oil on the pump shaft, install the dynamic ring part of the mechanical seal on the pump shaft gently, and push the seal ring gently by hand to make it retract freely (note that the anti rotation parts of the dynamic and static rings need to be assembled in place) )。 (8) Installation of sealing seat: first install the rubber oil seal on the sealing seat, then install the sealing seat on the pump cover, press it on the bearing seat, and tighten the nut. (9) Coupling installation: first install the retaining ring on the motor shaft head, install half of the coupling, then install the limiter on the pump shaft end and coupling groove, and tighten the bolts with a ring wrench (lift the pump shaft by 3 ~ 5 mm to provide mechanical seal prestress); then install the other half of the coupling, and screw on the hexagon socket head screw, which must be tightened. The correct inspection requirements for the installation of the coupling: the upper and lower clearance of the split coupling is even; rotate the coupling several times by hand to check whether the rotation is flexible. (10) According to the operation points, check whether the mechanical seal is replaced correctly and whether the pump unit operates normally. Practice has proved that if the above method is used correctly and maintained quickly, as the core equipment of the apron Pipeline Refueling System, it can ensure its normal operation; through frequency conversion control, it can give full play to its advantages of stable operation, high efficiency, energy saving and durability. At present, the help of pump is indispensable in many fields, such as agriculture, industry and so on. In agriculture, the main function of the pump is for irrigation and drainage. China's agricultural land is very wide, so most of China's rural areas can not do without the help of pumps. In the shipbuilding industry, an ocean going ship may need hundreds of pumps, and there are many kinds of pumps. Water supply and drainage pumps are also indispensable in urban construction. It is not difficult to see from these aspects that pumps are used in many industries and fields, so the industry of manufacturing pumps needs to be more professional and standardized. Shanghai Longya pump valve specializes in the research and development of various types of multi-stage centrifugal pumps, intermediate pumps, long shaft pumps, condensate pumps, multi-stage boiler feed pumps, submersible pumps, sewage pumps, etc. Shanghai Longya pump valve strives to provide high quality pump products for the majority of users.
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