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技術文章
進口自由浮球式疏水閥-進口（法蘭、焊接、內螺紋)德國威樂WILO閥門
德國威樂WILO進口自由浮球式疏水閥
利用高精度研磨不銹鋼空心浮球在閥腔內隨著凝結水的液位變化開啟或關閉閥門。該疏水閥的結構比較簡單，主要由浮球和自動排空裝置組成。閥腔內的動作元件——不銹鋼空心浮球，采用高精度研磨工藝制造，整個球面均可做密封面，工作時無集中磨損，使用壽命長 ; 閥腔內無易損件，可靠性高。浮球能根據水位變化而自由調節閥孔的開度，能夠連續排放凝結水，過冷度≈0℃，工作效率高。
自動排空裝置分為兩種 :（低壓PN25以內）液囊熱敏元件組成和（過熱蒸汽系統）雙金屬片組成。
Free-ball float trap
The drain valve is opened or closed by taking advantage of the change of liquid level of condensate water with the high-precision grinding stainless steel hollow float ball in the valve cavity. This steam trap has a simple structure, mainly consisting of float balls ａnd automatic emptying devices. The sole action elements, namely, the stainless steel hollow float ball is manufactured by high-precision grinding process, ａnd its entire sphere can serve as the sealing face ａnd will not be worn intensively during the work, so it has a longer service life. In addition, there is no wearing part in the valve cavity, with a high reliability. The float ball can freely adjust the openness of the valve opening in response to the change of water level ａnd discharge the condensate water continuously with a subcooled temperature of about 0℃ and higher efficiency.
The automatic emptying devices fall into two types : (within low pressure PN25) consisting of reservoir thermo-sensitive elements ａnd (overheated steam system) consisting of bimetals.
優點：
1、轉動的是高精度研磨的不銹鋼浮球，抗腐蝕。
2、結構簡單，維修方便。
3、不受壓力波動的影響，連續排水，噪聲小。
4、裝有自動排空裝置，能夠迅速排除空氣，防止氣堵和汽鎖。
5、體積小，排量大。
6、有水就排，能夠加快系統啟動速度。
Merits
1. The sole moving component is the high-precision grinding stainless float ball, which can resist erosion.
2. Its simple structure is convenient for maintenance.
3. To drain continuously with low noise, without being affected by the fluctuation of the pressure.
4. To be equipped with automatic emptying devices ａnd it can eliminate air quickly ａnd prevent air blocking ａnd steam locking.
5. Small volume ａnd large displacement.
6. To drain whenever there is water left over so as to quicken the startup speed of the system.
主要零件材料/The materials of primary accessories
| 零部件名稱Part ａnd component name | 材質Material |
| 閥體、閥蓋Valve body、valve cover | 鑄鐵、鑄鋼、不銹鋼Cast iron、Cast steel、Stainless steel |
| 自由浮球Free float ball | 304/316不銹鋼304/316 Stainless steel |
| 閥座Valve seat | 高鉻不銹鋼High chrome stainless steel |
| 自動排空氣裝置Automatic air exhaust | 不銹鋼、熱敏元件Stainless steel、Thermo-sensitive element |
| 過濾網、罩Filtrating screen、Cover | 不銹鋼Stainless steel |
不銹鋼球直徑/Diameter of stainless ball
| 材質/Material | B,JH5N | D,JH7N | E,JH9N | F,JH11N | G,JH13N |
| 鑄鐵 Cast iron | 68 | 110 | 150 | 180 | 200 |
| 鑄鋼 Cast steel | 70 | 120 | 150 | 190 | 220 |
原創作者：上海進典閥門有限公司
