【鑄鋼法蘭截止閥,法蘭大口徑截止閥結構特點及用途】
1.全關時手輪按順時針方向旋轉;
When fully closed,the handwheel rotates clockwise.
2.可以安裝在管道的任何位置上,介質從下往上流;
Able to be mounted on any position of the pipeline,the medium flows from down to up.
3.不銹鋼截止閥適用于各類腐蝕性介質的管道上,有良好的防腐性和足夠的強度;
Stainless steel made stop valve is of good anti-corrosive property and enough strength and suitable for various pipelines with corrosive medium.
4.合金鋼截止閥適用于耐高溫的蒸汽、油品管道上,具有耐高溫特點。
Alloy steel made stop valve features high-temperature resistance,suitable for high-temperature steam and oil goods pipelines.
【鑄鋼法蘭截止閥,法蘭大口徑截止閥執(zhí)行標準】
設計規(guī)范:GB/T 12235
結構長度:GB/T 12221
法蘭連接:JB/T 79
試驗與檢驗:JB/T 9002
產品標識:GB/T 12220
供貨規(guī)范:JB/T 7928
【國標鑄鋼截止閥主要零部件材料】
產品類型Product classification | 零件名稱Part name | |||||||
閥體、閥蓋Body bonnet | 閥桿Valve stem | 閥瓣Disc | 密封面Sealing face | 閥桿螺母Yoke nut | 填料Packing | 緊固件Fastener | 手輪Handwheel | |
J41(H.Y)-C型 J941(H.Y)-C型 | 25、WCB | 鉻不銹鋼Cr.Stainless steel | 2Cr1325 | H:不銹鋼Y:鈷基硬質合金鋼H:Stainless steelY:Co-based carbide alloy steel | 鋁青銅Albronze | 柔性石墨Flexible graphite | 優(yōu)質碳鋼High-grade carbon steel | 可鍛鑄鐵Forgeable cast-iron |
J41W-P型J941W-P型 | 鉻鎳鈦鋼Cr.Ni.Ti steel | 鉻鎳鈦鋼Cr.Ni.Ti steel | 鉻鎳鈦鋼Cr.Ni.Ti steel | 鉻鎳鈦鋼Cr.Ni.Ti steel | 鋁青銅Albronze | 柔性石墨Flexible graphite | 不銹鋼Stainless steel | 可鍛鑄鐵Forgeable cast-iron |
J41W-R型 | 鉻鎳鉬鈦鋼Cr.Ni.Mo.Ti steel | 鉻鎳鉬鈦鋼Cr.Ni.Mo.Ti steel | 鉻鎳鉬鈦鋼Cr.Ni.Mo.Ti steel | 鉻鎳鉬鈦鋼Cr.Ni.Mo.Ti steel | 鋁青銅Albronze | 柔性石墨Flexible graphite | 不銹鋼Stainless steel | 可鍛鑄鐵Forgeable cast-iron |
J41Y-I型J941Y-I型 | 鉻鉬鋼 Cr.Mo steel | 鉻鉬鋼Cr.Mo steel | 合金鋼Alloy steel | 鈷基硬質合金鋼C0-based carbide alloy steel | 鋁青銅Albronze | 柔性石墨Flexible graphite | 合金鋼Alloy steel | 可鍛鑄鐵Forgeable cast-iron |
【試驗壓力】
公稱壓力PN(MPa)Nominal pressure | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
殼體強度試驗Shell strength test | 2.4 | 3.8 | 6.0 | 9.6 | 15 | 24 |
上密封試驗Back seal test | 1.8 | 2.8 | 4.4 | 7.0 | 11 | 18 |
密封試驗Seal test | 1.8 | 2.8 | 4.4 | 7.0 | 11 | 18 |