Power Generation & Thermal Energy Solutions
VALVA specializes in high-performance flow control for the thermal energy sector. From traditional coal-fired plants to advanced Combined Heat and Power (CHP) systems, our valves are engineered to manage the violent energy of high-pressure steam and the thermal cycling of modern energy recovery processes. We ensure that your thermal energy cycle operates with maximum efficiency and zero unplanned downtime.
Mastering the Thermal Cycle
Thermal energy production places immense mechanical and thermal stress on every component. VALVA addresses these critical challenges:
- High-Temperature Creep: Utilizing alloys like 310S and Inconel to maintain structural integrity under constant thermal load.
- Thermal Shock Resistance: Valves designed to handle rapid temperature fluctuations during plant start-up and shut-down.
- Steam Cutting & Erosion: Hard-faced (Stellite) seating surfaces to resist the abrasive nature of high-velocity dry and wet steam.
- Thermal Expansion Management: Precision tolerances that allow for metal expansion without compromising the valve’s sealing or operation.
Core Thermal Energy Applications
- Main Steam & Reheat Systems: High-pressure Gate and Globe valves designed for the most critical lines in the power house.
- Heat Recovery Steam Generators (HRSG): Optimized solutions for recovering heat from gas turbine exhaust to drive secondary steam turbines.
- District Heating: Large-scale isolation and control valves for municipal thermal energy distribution networks.
- Boiler Feed Water: High-pressure Check and Stop valves to prevent backflow and protect critical boiler components.
- Waste-to-Energy: Corrosion-resistant alloys (Hastelloy/Inconel) to handle the aggressive flue gases and steam in waste incineration plants.
Metallurgy for Thermal Endurance
In the world of thermal energy, the choice of material is a choice between safety and catastrophe:
| Component / Service | Recommended Material | Why it Works |
| Superheated Steam | Stainless Steel 310S / 904L | Superior oxidation resistance at temperatures exceeding 1000°C. |
| Boiler Internal Parts | Incoloy 800H / 825 | Excellent creep-rupture strength and resistance to carburization. |
| High-Pressure Feedwater | Carbon Steel A105 / WCB | High tensile strength and cost-efficiency for water-phase thermal lines. |
| Valve Seats (High-Wear) | Stellite 6 (Hard-facing) | Maintains hardness and prevents galling at extreme temperatures. |
Industry Standards & Thermal Safety
VALVA ensures every valve meets the rigorous global requirements for thermal power:
- Design Standards: ASME B16.34 (Valves-Flanged, Threaded, and Welding End).
- Boiler & Pressure Vessel Code: Compliance with ASME Section I and Section VIII.
- Non-Destructive Testing (NDT): 100% Radiographic Testing (RT) on castings and Dye Penetrant (PT) on hard-faced surfaces.
- High-Pressure Testing: Every valve undergoes body and seat testing per API 598 or ASME B16.34 standards.