Advantages and Characteristics of Forged Steel High Pressure Flange Ball Valve

1、鍛鋼高壓法蘭球閥的手動部分可采用鋼板壓制的手柄或不銹鋼鑄造的手柄。手柄設有限位結構，在閥門開啟、關閉的位置設定限位，當鍛鋼高壓法蘭球閥使用在關鍵裝置上時，限位塊上設有鎖孔可鎖定開關位置避免誤操作。手柄上有明顯地開和關標識。

1. The manual part of forged steel high pressure flange ball valve can be made of steel plate pressed handle or stainless steel cast handle. The handle is equipped with a limit structure to set limits at the opening and closing positions of the valve. When the forged steel high-pressure flange ball valve is used on key devices, the limit block is equipped with a lock hole to lock the switch position to avoid misoperation. The handle has obvious opening and closing marks.

2、鍛鋼高壓法蘭球閥的閥桿采用A182F（1Cr13）整體鍛造并調制處理，硬度達到HB220～250。閥桿通過平鍵或花鍵或方契與手柄連接，通用性強，拆裝方便。閥桿設有防吹出結構。

2. The valve stem of forged steel HP flange ball valve is integrally forged with A182F (1Cr13) and modulated, with hardness of HB220~250. The valve rod is connected with the handle through a flat key, spline or square wedge, which has strong versatility and is convenient for disassembly and assembly. The valve rod is equipped with anti blow out structure.

3、鍛鋼高壓法蘭球閥的填料選用編結、柔性石墨密封圈或四氟烯密封圈，使得閥桿在一定的潤滑情況下實現可靠的密封。

3. The packing of forged steel high pressure flange ball valve shall be braided, flexible graphite seal ring or tetrafluoroethylene seal ring, so that the valve rod can be reliably sealed under certain lubrication conditions.

4、根據需要，鍛鋼高壓法蘭球閥可設計成防靜電結構，在球體與閥桿、閥桿與殼體之間設置導電彈簧，避免靜電打火點燃易燃物質，確保系統安全。

4. As required, forged steel high pressure flange ball valve can be designed into an anti-static structure. A conductive spring is set between the ball and the valve stem, and between the valve stem and the housing to avoid static electricity igniting flammable substances and ensure system safety.

5、密封副型式多樣。根據不同工況可選用軟密封、硬密封、防火閥座等結構；DN150以下為浮球型式鍛鋼高壓法蘭球閥，DN200以下為固定球型式。

5. Various types of sealing pairs. Soft seal, hard seal, fireproof valve seat and other structures can be selected according to different working conditions; The ball valve below DN150 is a floating ball type forged steel high pressure flange ball valve, and the ball valve below DN200 is a fixed ball valve.

6、鍛鋼高壓法蘭球閥閥座處可設置輔助密封結構，在閥座和閥桿部位加裝注脂閥，緊急情況下可暫時密封，并可根據需要加長閥桿以適宜埋地鋪設得場所。

6. Auxiliary sealing structure can be set at the valve seat of forged steel high pressure flange ball valve, and grease injection valve can be added at the valve seat and valve stem, which can be temporarily sealed in case of emergency, and the valve stem can be lengthened as required to suit the place of buried laying.

鍛鋼高壓法蘭球閥是主要用于石油、天然氣的長距離管線輸送和城市煤氣管道系統的重要部分。鍛鋼高壓法蘭球閥有長輸管線用閥的獨有的特征，就是在設計上很好的考慮了其能承受管道應力的能力。由于管道運輸的特殊性，需要鍛鋼高壓法蘭球閥具有很好的安全性、可靠性和較長的使用壽命，所以在鍛鋼高壓法蘭球閥的結構設計上需要特別注意，也需要經過特有的產業標準。擰開排除裝置可檢查閥座是否發生泄漏，也可排放中腔滯留物減少介質對閥單方面上的污染。一般來說鍛鋼高壓法蘭球閥的使用材料必須具有很好的耐腐蝕性，并且能保證其密封性能穩定。較密封圈損傷的情況下，鍛鋼高壓法蘭球閥也應該具有一定的密封性，這樣才可以在出現泄漏時的緊急救護作用。鍛鋼高壓法蘭球閥除了耐腐蝕性還需要很好的耐硫化能力，在防火、防靜電等性能上，也一定是非常優良。

Forged steel high pressure flange ball valve is mainly used for long-distance pipeline transportation of oil and natural gas and an important part of urban gas pipeline system. Forged steel high pressure flange ball valve has the unique feature of valves for long-distance pipeline, which is that its ability to withstand pipeline stress is well considered in design. Due to the particularity of pipeline transportation, forged steel high pressure flange ball valve is required to have good safety, reliability and long service life. Therefore, special attention should be paid to the structural design of forged steel high pressure flange ball valve, and special industrial standards should also be passed. Unscrew the discharge device to check whether the valve seat leaks, or discharge the residues in the middle chamber to reduce the pollution of the medium on the valve side. Generally speaking, the materials used for forged steel high pressure flange ball valves must have good corrosion resistance and ensure stable sealing performance. When the seal ring is damaged, the forged steel high pressure flange ball valve should also have a certain degree of tightness, so that it can be used for emergency rescue in case of leakage. In addition to corrosion resistance, forged steel high pressure flange ball valve also needs good sulfur resistance, which must be very good in fire protection, anti-static and other performance.

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