Van cổng loại hàn (kiểu Bonnet bắt vít)
Design
Cast steel gate valves are designed and manufactured to provide maximum service life and dependability. All gate valves are full ported and meet the design requirements of American Petroleum Institute standard API600&API 6D,British standard BS1414& BS EN 1984 and generally, conform to American Society of Mechanical Engineers standard ASME B16.34. Valves are available in a complete range of body/bonnet materials and trims.
| Size | NPS 1/2″~56″ |
|---|---|
| hiệu suất làm việc | Class 150~2500 |
| vật liệu | WCB,LCB,WC6,WC9,C12,C5,CF8,CF8M,CF3,CF3M |
| Temperature | -29~540℃ |
| tiêu chuần thiết kế và chế tạo | API 600,BS 1414,ASME B16.34 |
| khoản cách giửa hai đầu valve | ASME B16.10,BSEN 558 |
| End Connection | ASME B16.5,ASME B16.47,BSEN 1092 |
| kiểm tra và giám định | ISO 5208,API 600,BS 6755 |
| Structure Type | OS & Y,Bolted bonnet,Single Wedge |
| Operation Method | Manual,Electric Actuator,Pneumatic Actuator |
Description
vật liệu
Vật liệu thân xe / nắp ca-pô tiêu chuẩn bao gồm chín cấp carbon, hợp kim thấp và thép không gỉ. Đối với các ứng dụng đặc biệt, chúng có thể được cung cấp bằng các loại hợp kim và thép không gỉ khác. Có đầy đủ các loại vật liệu trang trí để phù hợp với bất kỳ dịch vụ nào. Vật liệu đóng gói và miếng đệm tùy chọn có sẵn cho đủ loại điều kiện dịch vụ.
có thể mô phỏng cho van thép
| thay đổi trim thay đổi kiểu kết nối thay đổi seal, vật liệu làm kín cấu trúc hoạt động tay vặn |
cân bằng áp suất By-Pass sơn hoàn thiệt theo yêu cầu Weld End Bore Changes Oxygen & Chlorine Clearing & Packaging |
| A)Operation Large handwheels for easy operation. also available with gearing.motor actuators, pneumatic or hydraulic actuators for more difficult services. |
B)Live Load Packing In services requiring frequent cycling or with high pressure/temperature variations,live loading extends the service life between maintenance periods by requiring less stments. Belleville springs are employed to provide constant packing gland stress. |
C)OS&Y Outside screw and yoke.Cast steel gate valve yoke integral with bonnet for 150Lb-8″ 600Lb-6″, 900Lb-4″&small. |
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| D)BB Bolted bonnet, welding bonnet and pressure seal bonnet in services requiring frequent cycling or with high pressure/temperature variations. |
E)End Connections A choice of flanged, RTJ flanged or buttwelding end for piping flexibility. |
F)Yoke Sleeve Extra long thread engagement between yoke sleeve and stem provide long thread life.valves of sizes larger than 150Lb-12″, 300Lb-10″,600Lb-6″, 900Lb/1500Lb/2500Lb-4″ are regularly provided with roll bearing yokes. |
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| G)Lantern Ring And Double Packing Set Lantern ring leak-off fitting connection and double packing stack is optionally available for critical services |
H)Body-to-Bonnet Joint A flat face gasket joint is used in the 150lb valves. A male and female joint is used in 300lb to 600lb valves.ring joint is used in the body to bonnet connections in 900lb & higher rated valves. |
I)Stem All wedge gate valves are provided with upset forged T-head stems. By forging the T-head ,the stem at the stem-wedge connection is stregthened,this design also allows the wedge possibility of a bent stem jamming the wedge. |
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| J)Wedge Integral guide rib faces assure self-centering of wedge.flexible wedge gate valve has a one piece, twin-disc wedge,which is designed so that each half flexes independently.avaliable in solid, flex split and his designs. |
tiêu chuẩn ứng dụng
●STEEL GATE VALVES API 600/API6D
●STEEL GATE VALVES ISO 10434/ISO 14313
●STEEL VALVES,ASME B16.34
●FACE TO FACE ,ASME B16.10
●END FLANGES ,ASME B16.5
●BUTTWELDING ENDS,ASME B16.25
●INSPECTION AND TEST API 598/API 6D
mô tả thiết kế
●FULL PORT DESIGN
●OS&Y OUTSIDE SRCEW AND YOKE
●BB.BOLTED BONNET
●FLEXIBLE WEDGE,FULLY GUIDED
●CHOICE OF SOLID OR SPLIT WEDGE
●RENEWABLE SEAT RINGS
●FORGED T-HEAD STEM
●RISING STEM AND NON-RISING HANDWHEEL
●FLANGED OR BUTTWELDING ENDS
●AVAILABLE WITH BG OPERATOR
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