ZBA37H/ZBA43H-16/25/40 C Dual Spring Safety Valve
Dual Spring Safety Valve for systems requiring two same-size safety valves on a shared Y-type inlet for higher discharge or duty arrangement. Key selection data include Y-connector nominal size per catalog combination table, PN16, PN25 and PN40, Up to 350 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: Y-connector nominal size per catalog combination table
- Pressure rating: PN16, PN25 and PN40
- Temperature: Up to 350 deg C
- Connection: Flanged Y-type dual valve assembly
- Media: Steam and air
- 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
ZBA37H/ZBA43H-16/25/40 C
尺寸范围
Y-connector nominal size per catalog combination table
压力等级
PN16, PN25 and PN40
温度范围
Up to 350 deg C
适用介质
Steam and air
连接类型
Flanged Y-type dual valve assembly
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： A37/A43 = dual spring safety valve assembly. The nominal DN refers to the Y-connector inlet; paired valve size follows the combination table.
典型应用： systems requiring two same-size safety valves on a shared Y-type inlet for higher discharge or duty arrangement
排量审查： Discharge and dimensions depend on the selected Y-connector and paired A47H valve combination.
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 23. Verify critical dimensions against the approved order drawing before fabrication or piping release.
| 型号 | 公称通径（DN） | do | R | G | 公称通径（DN） | do | Approx. H |
|---|---|---|---|---|---|---|---|
| A37H-16/25/40C | 50 | 1 15 | 225 | 165 | 32 | 2×25 | 310 |
| A37H-16/25/40C | 80 | 140 | 310 | 205 | 65 | 2×50 | 415 |
| A37H-16/25/40C | 100 | 160 | 355 | 255 | 80 | 2×65 | 420 |
| A37H-16/25/40C | 125 | 170 | 400 | 275 | 100 | 2×80 | 540 |
| A37H-16/25/40C | 150 | 190 | 440 | 300 | 125 | 2×100 | 625 |
| A43H-16/25/40C | 50 | 1 15 | 225 | 165 | 32 | 2×25 | 310 |
| A43H-16/25/40C | 80 | 135 | 285 | 190 | 50 | 2×40 | 380 |
| A43H-16/25/40C | 100 | 160 | 355 | 255 | 80 | 2×65 | 420 |
| A43H-16/25/40C | 125 | 170 | 400 | 275 | 100 | 2×80 | 540 |
| A43H-16/25/40C | 150 | 190 | 440 | 300 | 125 | 2×100 | 625 |
| A37H A37H Type A47H Relevant A47H Type A43H A43H Type A47H Relevant A47H Type | ( Nominal | DN ) Diameter | 50 | 80 | 100 | 125 | 150 |
| A37H A37H Type A47H Relevant A47H Type A43H A43H Type A47H Relevant A47H Type | Nominal | ( DN ) Diameter | 32 | 65 | 80 | 100 | 125 |
| A37H A37H Type A47H Relevant A47H Type A43H A43H Type A47H Relevant A47H Type | ( DN Nominal | ) Diameter | 50 | 80 | 100 | 125 | 150 |
| A37H A37H Type A47H Relevant A47H Type A43H A43H Type A47H Relevant A47H Type | Nominal | ( DN ) Diameter | 32 | 65 | 80 | 100 | 125 |
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: Y-connector material WCB; other valve materials follow A47H spring safety valve configuration. Trim and internals: Same main trim family as A47H, with hard sealing surface options according to order. Spring and stem: 50CrVA spring for standard service; stainless or coated fluoroplastic/304 spring options for corrosive service where specified.
Testing and inspection: Set pressure calibration, shell strength test, seat tightness/leakage test, reseating/blowdown check, dimensional inspection and material verification can be supplied according to the confirmed standard and order requirements.
Source and scope: product data is based on Zobai Safety Valve Product Catalog.pdf, catalog page 23. 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 ZBA37H/ZBA43H-16/25/40 C Dual Spring Safety Valve page?
ZBA37H/ZBA43H-16/25/40 C
应确认哪些尺寸、压力和温度数据？
Size: Y-connector nominal size per catalog combination table. Pressure: PN16, PN25 and PN40. Temperature: Up to 350 deg C. Confirm the exact combination for the selected model.
该产品系列可处理哪些介质？
Steam and air. 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。.