Specifications
| Parameter | Specification |
|---|---|
| Series | ECOLINE BSGL-S |
| Body Material | A216 WCB (cast) / A105 (forged) |
| Pressure Class | Class 150, 300, 800 |
| Size Range | NPS ½–8 (cast); NPS ½–2 (forged) |
| Max Temperature | 400°C |
| Max Pressure | Class 300: 51 bar; Class 800: 136 bar |
| Design Standard | ANSI/ASME |
| End Connections | Flanged RF (cast), Socket Weld (forged) |
| Construction | 316 Ti bellows + backup graphite packing, globe pattern disc |
| Trim / Sealing | Integral seat with Stellite hard-facing option |
Material & Applications
Why Carbon Steel WCB/A105: Same zero-emission 316 Ti bellows technology as the BSGT-S gate valve, but in globe pattern for throttling and flow regulation. The globe disc design allows precise flow control from fully open to fully closed, with the bellows maintaining zero stem emission at every position. Used where both emission prevention AND flow modulation are required — a combination that conventional packed globe valves cannot achieve without some stem leakage.
Typical applications: Chemical dosing and regulation of toxic or hazardous fluids. Vacuum pressure control. Solvent flow regulation. Any throttling application where both emission control AND flow modulation are required simultaneously. Commonly used in pharmaceutical plants where process fluid must not leak to atmosphere for both safety and product purity reasons.