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O形圈屬于擠壓密封，擠壓型密封結構的基本特點依靠密封件發生彈xing變形、在密封接觸面上造成接觸壓力，當
接觸壓力大于被密封介質的內壓時，則起到密封作用，反之導致滲漏。兩片式球閥的左、右端體為金屬對金屬
接觸，屬于靜態密封結構，為了減小或消除它們之間的密封面間隙，在設計時選擇O形圈作密封元件，當介質壓
力較小時呈靜止狀態，所需密封力很小，此時靠裝配時的預緊力在O形圈彈力的作用下，即可保證左、右端體密
封；當介質壓力不斷升高時，密封比壓也隨著增大，O形圈驟然膨脹，此時O形圈有效地阻止了兩端縫隙間的泄
漏點，球閥的密封xing能因而得到保證產品SMK20-12L-VG-C6F入庫號產品SMK20-12L-VG-C6F入庫號
當球閥作啟、閉動作時，無論采用何種驅動方式，閥桿都要作旋轉運動，為防止介質通過中孔間隙竄出，在閥
桿處勾一凹槽嵌入O形圈雖然閥桿作往復轉動90，但由于O形圈的摩擦小和良好的自潤滑xing，它們相互
配合起到良好的密封效果。為了保證閥座與閥芯形成良好的密封副，同樣在閥座內加工一凹槽，把O形圈安裝
其中（如圖4）當閥腔介質壓力升高時，在彈huang力的推動下，閥座向閥芯產生位移，在O形圈高彈xing能的作
用下，保證了管道內腔的密封xing，此時O形圈在管道中啟動態密封效果，前兩種結構形式中，O形圈同屬于動
態密封結構。
BBV20020001K高壓方形球閥
BBV20040001K
BBV20060001K
BBV20080001K
BBV20120001K
BBV20160001K
BBV20160001H
BBV20200001K
BBV20240001K
高壓方形閥體球閥－BBV型
O型圈端面密封連接－公螺紋(ISO 8434-3)
BBV2B040001M高壓方形閥體球閥-BBV 型
BBV2B050001M
BBV2B060001M
BBV2B080001M
BBV2B100001M
BBV2B120001M
BBV2B160001M
高壓方形閥體球閥-BBV 型
24度錐連接-輕系列(ISO 8434-1)
BBV2DN0406L0001M
BBV2DN0608L0001M西德福stauff高壓球閥BBV2DN0608L0000M
BBV2DN0810L0001M
BBV2DN1012L0001M
BBV2DN1315L0001M
BBV2DN1318L0001M
BBV2DN2022L0001M
BBV2DN2528L0001M
BBV2DN2535L0001M
BBV2DN2542L0001M
西德福stauff高壓球閥BBV2DN0608L0000M
BBV2DN0408S0001M
BBV2DN0610S0001M閥體.球體.閥桿.碳鋼材質
BBV2DN0812S0001M
BBV2DN1014S0001M
BBV2DN1316S0001M
BBV2DN1320S0001M
BBV2DN1620S0001M
BBV2DN2025S0001M
BBV2DN2530S0001M
BBV2DN2538S0001M
FBV2G200001M
FBV2G240001M
FBV2G320001M
高壓鍛造閥體球閥-BBV型NPTmu螺紋(ANSI B1.20.1)
FBV20200001M
FBV20240001M
FBV20320001M
高壓鍛造閥體球閥－FBV型UN/UNFmu螺紋(SAE J 514)
FBV21200001M
FBV21240001M
FBV21320001M
HBV2DN0610S00B1M德國原裝正品西德福高壓球閥HBV2DN0610S00B1M
HBV2DN0408S00B1M
HBV2DN0812S00B1M
HBV2DN1014S00B1M
HBV2DN1316S00B1M
HBV2DN1320S00B1M
HBV2DN2025S00B1M
HBV2DN2530S00B1M
原裝西德福高壓球閥BBV22120001M
BBV22160001M
BBV22X080001M
BBV22X120001M
BBV22X160001M
高壓鍛造閥體球閥－ FBV22/23 型
3000 PSI SAE 對開法蘭連接 (ISO 6162-1)
FBV22200001M
FBV22240001M
FBV22320001M
FBV22X200001M
FBV22X240001M
FBV22X320001M
高壓鍛造閥體球閥 -FBV22/23 型
6000 PSI SAE 對開法蘭連接(ISO 6162-2)
FBV23200001M
FBV23240001M
FBV23320001M
FBV23X200001M
FBV23X240001M
FBV23X320001M
BBV2EM080001M
BBV2EM120001M
BBV2EM160001M
3000 PSI(代碼61)-UNC螺紋
BBV2E080001M
BBV2E120001M
BBV2E160001M
高壓方形閥體球閥 -BBV22/23 型
6000 PSI SAE 對開法蘭連接 (ISO 6162-2)
6000 PSI(代碼62)ISO公制螺紋
BBV2SM080001M
BBV2SM120001M(代碼62)ISO公制螺紋
BBV2SM160001M
6000 PSI(代碼62)UNC螺紋
BBV2S080001M
BBV2S120001M
BBV2S160001M
高壓鍛造閥體球閥－FBV型2通球閥
3000 PSI SAE 法蘭連接9ISO 6162-1)
3000 PSI(代碼61)ISO公制螺紋
FBV2EM240001M
FBV2EM200001M
FBV2EM320001M(代碼61)ISO公制螺紋
FBV2EM400001M
3000 PSI (代碼61)UNC螺紋
FBV2E200001M(代碼61)UNC螺紋）
FBV2E240001M
FBV2E320001M
FBV2E400001M
BBV2D(1-2)080001M
BBV2D(1-2)120001M
BBV2D(1-2)160001M
BBV2D(1-2)200001M
BBV2D(1-2)240001M
BBV2D(1-2)320001M
BBV2D(1-2)400001M
BBV2D1480001M
400bar/5800 PSI系列(ISO 6164)ISO公制螺紋
BBV2D(1-2)080001M
BBV2D(1-2)120001M
BBV2D(1-2)160001M
BBV2D(1-2)200001M
BBV2D(1-2)240001M
BBV2D(1-2)320001M
BBV2D(1-2)400001M
BBV2D2480001M
BBV2D2640001M
KHZ27M080001M
KHZ27M120001M
KHZ27M160001M
KHZ27M200001M高壓方形閥體球閥
KHZ27M240001M
KHZ27M320001M
3000 PSI系列(代碼61)UNC螺紋
KHZ27080001M
KHZ27120001M
KHZ27160001M
KHZ27200001M
KHZ27240001M
KHZ27320001M
KHZ28M080001M法蘭連接(ISO 6162-2)
KHZ28M120001M
KHZ28M160001M
KHZ28M200001M
KHZ28M240001M
KHZ28M320001M
KHZ28080001M西德福球閥
KHZ28120001M
KHZ28160001M
KHZ28200001M
KHZ28240001M
KHZ28320001M
球閥德國西德福高壓方形閥體球閥BBV25060001M
BBV25080001M
BBV25120001M
BBV25160001M
BBV25200001M
BBV25240001M
BBV25320001M
BBV35040001M板式安裝球閥
BBV35060001MBBV35型L形通孔3通
BBV35080001M
BBV35120001M
BBV35160001M
BBV35200001M
BBV35240001M
BBV35320001M
BBVS35040001M
BBVS35060001M多通球閥
BBVS35080001M3通板式安裝
BBVS35120001M
BBVS35160001M
BBVS35200001M
BBVS35240001M
BBVS35320001M
高壓方形閥體球閥 CBV型/多通球閥
CBV3G020001M
CBV3G040001M
CBV3G060001M
西德福球閥BBV2G060001M
CBV3G080001M
CBV3G120001M
CBV3G160001M
CBV3G200001M
CBV3G240001M
CBV3G320001M
CBV30020001KNPT母螺紋(ANSI B1.20.1)
CBV30040001K
CBV30060001K
CBV30080001K
CBV30120001K
CBV30160001K
CBV30200001K
CBV30240001K
CBV30320001K
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