Power Station Valves: High-Temperature High-Pressure Valve Guide for Thermal Power Plants
Quick Answer: Power station valves are designed for HTHP steam services up to 570C and 2500 LB class. Types include gate, globe, check, and ball valves with pressure seal bonnets, flexible wedge discs, and Stellite hardfacing.
| Application | Valve Type | Design |
|---|---|---|
| Main Steam Isolation | Gate Valve | Pressure seal, flexible wedge |
| Feedwater Control | Globe Valve | Y-type, stellite trim |
| Extraction Steam | Check Valve | Tilting disc, slow-closing |
View power station valve products.
Materials: Up to 425C: WCB. 425-540C: WC6 (1.25Cr-0.5Mo). 540-570C: WC9 (2.25Cr-1Mo). Above 570C: C12A or stainless. All seats Stellite hardfaced.
Pressure Seal Bonnet: Higher pressure tightens the seal — ideal for cycling thermal services where bolted bonnets may leak.
FAQ
Q: Why do power station valves fail?
A: Thermal fatigue, wire drawing, stem galling, thermal shock. Annual inspection recommended.
Contact Vornet Valve for power station valve specifications.