ZBA68SB-100/160/210/550 C/I/V ZBA68 Series High Temperature and High Pressure Steam Safety Valve
ZBA68 Series High Temperature and High Pressure Steam Safety Valve for power plant boilers, high-pressure steam pipelines and steam pressure equipment. Key selection data include DN50-DN150, PN100, PN160, PN210 and PN550 model ratings, C type up to 425 deg C; I type up to 510 deg C; V type up to 550 deg C, materials, connection standard and set pressure.
最终整定压力、认证泄放量、材质代号及连接标准须以经批准的参数表为准，并在采购前予以确认。.
- Size range: DN50-DN150
- Pressure rating: PN100, PN160, PN210 and PN550 model ratings
- Temperature: C type up to 425 deg C; I type up to 510 deg C; V type up to 550 deg C
- Connection: Flanged inlet and outlet for high-pressure steam service
- Media: Steam
- 图纸、试验记录和材料文件已按订购配置确认。.
技术参数与选型数据
产品型号
ZBA68SB-100/160/210/550 C/I/V
尺寸范围
DN50-DN150
压力等级
PN100, PN160, PN210 and PN550 model ratings
温度范围
C type up to 425 deg C; I type up to 510 deg C; V type up to 550 deg C
适用介质
蒸汽
连接类型
Flanged inlet and outlet for high-pressure steam service
标准与合规
安全阀设计、性能及试验参考遵循 GB/T 12241、GB/T 12242 和 GB/T 12243；适用时，型号编制遵循 JB/T 308 阀门型号编制方法。.
工程解析：型号逻辑与应用边界
型号代码： A68SB = high-temperature high-pressure steam safety valve; pressure digits identify PN rating; C/I/V identify material and temperature class.
典型应用： power plant boilers, high-pressure steam pipelines and steam pressure equipment
排量审查： Catalog includes DN50-DN150 dimension table and high-pressure steam performance requirements. Final discharge sizing should be calculated from steam relieving duty.
本产品系列不应仅依据型号、公称尺寸或压力等级进行选型。请确认泄放工况、所需泄放量、整定压力、操作裕量、温度、背压及实际连接标准。.
尺寸与选型指南
The table below is transcribed from catalog page 046-048. Verify critical dimensions against the approved order drawing before fabrication or piping release.
| 型号 | 公称通径（DN） | D2 | DI | Nominal Pressure (PN) | L | L1 | Approx. H |
|---|---|---|---|---|---|---|---|
| A68SB-100/160/210/550C/I/V | DN50 | 100 | 88 | 100 – 2.5/4.0 | 1 、 6 | 180 | 250 |
| A68SB-100/160/210/550C/I/V | DN65 | 140 | 1 10 | 150.2.5/4.0 | 1 、 6 | 215 | 290 |
| A68SB-100/160/210/550C/I/V | DN80 | 140 | 1 17 | 150 – 2.5/4.0 | 1.6 | 215 | 310 |
| A68SB-100/160/210/550C/I/V | DN100 | 170 | 1 17 | 200.2.5/4.0 | 270 | 380 | |
| A68SB-100/160/210/550C/I/V | DN150 | 225 | 172 | 250 – 2.5/4.0 | 1 、 6 | 320 | 420 |
| NO. | Pa rt Name | Column 3 | Material | Column 5 |
|---|---|---|---|---|
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | NozzIe | 304/AI05+STL | 304/15CrM0+STL | 12CrMoV+STL |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Body | WC B | ZGI5Cr1MO | ZG15Cr1M01V |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Down Adj usting Ring | 20Cr13 | 304 | 304 |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Set Screw | 20Cr13 | 304 | 304 |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Disc | 304/17.4PH | N07718 | N07718 |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Up Adjusting Ring | 20Cr13 | 304 | 304 |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Guide | 20Cr13 | 304 | 304 |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Radiator | WC B | WCB | ZGI5Cr1MO |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Spring washer | C.St | C.St | C.St |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | SpindIe | 1Cr17Ni2 | 1Cr17Ni2 | 1Cr17Ni2 |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Bonnet | WC B | WCB | WCB |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Spring | 50CrVA | 30W4Cr2VA | 30W4Cr2VA |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Adjusting Bolt | 20Cr13 | 20Cr13 | 20Cr13 |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Adj; Bolt Nut | €BC.St | C.St | C.St |
| 1 2 3 4 5 6 7 8 9 12 13 14 15 | Ca p | WC B | WCB | WCB |
RFQ checklist
询价清单：型号或阀门类型、DN/NPS、PN/Class、整定压力、泄放介质、工作温度、阀体及内件材质、进出口连接标准、阀帽/杠杆/先导选项、数量、图纸、证书及检验要求。.
Failure Analysis, Manufacturing Evidence and Quality Control
Common misapplication risks: incorrect thread or connection standard, insufficient certified relieving capacity, unsuitable body or trim material, operating pressure too close to set pressure, unreviewed back pressure, and installation loads transferred to the valve.
Material review: body materials: High-temperature alloy steel material selected by C/I/V code and steam condition. Trim and internals: High-performance high-temperature disc and nozzle materials; Stellite hard alloy overlay on disc and seat. Spring and stem: High-performance spring tested under simulated high-pressure and high-temperature service conditions.
Testing and inspection: Set pressure tolerance <= +/-1 percent for PS > 7 MPa, overpressure <= 3 percent PS, blowdown <= 7 percent PS, plus thermal-state testing where required.
Source and scope: product data is based on Zobai Safety Valve Product Catalog.pdf, catalog page 046-048. Project compliance remains subject to the approved datasheet, drawing, calculation and controlled certificates for the ordered configuration.
Review material traceability, type-test scope 和 project certificate requirements.
Related Products
常见问题
Safety Valve FAQs
What models are covered by this ZBA68SB-100/160/210/550 C/I/V ZBA68 Series High Temperature and High Pressure Steam Safety Valve page?
ZBA68SB-100/160/210/550 C/I/V
应确认哪些尺寸、压力和温度数据？
Size: DN50-DN150. Pressure: PN100, PN160, PN210 and PN550 model ratings. Temperature: C type up to 425 deg C; I type up to 510 deg C; V type up to 550 deg C. Confirm the exact combination for the selected model.
该产品系列可处理哪些介质？
Steam. Material and sealing compatibility require review for the actual fluid composition and temperature.
产品目录中的尺寸表能否用于最终制造？
仅用于初步审查。在管道或设备制造前，请根据批准的订单图纸确认关键尺寸、连接细节和方向。.
询价单（RFQ）中应包含哪些内容？
询价清单：型号或阀门类型、DN/NPS、PN/Class、整定压力、泄放介质、工作温度、阀体及内件材质、进出口连接标准、阀帽/杠杆/先导选项、数量、图纸、证书及检验要求。.