High-Temperature Stainless Steel Butterfly Valve DN50 Price – Designed for 500°C Service Conditions
When operating temperatures reach 500°C, only specially engineered valves with all-metal construction and advanced sealing designs can provide reliable performance. The high-temperature stainless steel butterfly valve DN50 is specifically designed for these demanding conditions, offering exceptional thermal resistance and long service life. This article provides a comprehensive 2026 price reference and outlines the essential selection parameters for this critical high-temperature component.The main Butterfly Valve product names of China Butterfly Valve Network include:Pneumatic Ventilation Butterfly Valve,Pneumatic High Vacuum Butterfly Valve,Pneumatic Desulfurization Wafer Butterfly Valve,Pneumatic Desulfurization Flange Butterfly Valve,Quick-installed Sanitary Butterfly Valve,Rectangle Louver Regulate Butterfly Valve,Rotundity Louver Electric Regulate Butterfly Valve,Spring(Emergency Off) Quick Off Butterfly Valve,Sanitary Butterfly Valve,Telescopic Butterfly Valve.
2026 Price Reference for High-Temperature Stainless Steel Butterfly Valve DN50
As of 2026, the price of a high-temperature stainless steel butterfly valve DN50 varies significantly based on the sealing design, pressure rating, and actuation method. Based on current market data, the following reference ranges apply:
For a standard manual wafer-type model with stainless steel body and metal seat suitable for temperatures up to 500°C, a well-known European brand product is priced at approximately €1,684.70 (about $1,800 USD) per unit . This premium pricing reflects the advanced double-eccentric design and high-temperature Inconel seat option.
For more economical domestic brand models, prices are considerably lower. A basic stainless steel high-temperature butterfly valve in DN50 size can be found in the range of ¥400 to ¥800 RMB (approximately $55 to $110 USD) , though these may have temperature limitations and simpler sealing designs . A manual stainless steel wafer butterfly valve with PTFE seat is quoted at approximately ¥50 for the valve body alone, though this configuration is not rated for 500°C service .
For motorized or electric actuated versions, prices increase substantially. An electric stainless steel butterfly valve in DN50 size with moderate temperature rating is priced at approximately ¥7,800 RMB (about $1,080 USD) . For 500°C-rated electric versions with metal seats and advanced sealing, the premium is even higher.
It is important to note that these are reference prices. The final transaction cost depends on several key factors including the specific sealing design (soft vs. metal seat), pressure rating, brand, and actuation type.
Key Factors Influencing the Price of DN50 High-Temperature Stainless Steel Butterfly Valves
Understanding what drives the cost of a high-temperature stainless steel butterfly valve is essential for making an informed procurement decision.
Sealing Design – Metal Seat vs. Soft Seat
The sealing mechanism is the most critical factor affecting both performance and price. Metal-seated (hard-sealed) designs are mandatory for 500°C service, as polymer seals degrade at temperatures above 200°C to 300°C . Metal-seated valves feature sealing surfaces made of stainless steel with hardfacing such as Stellite, ensuring reliable shut-off at elevated temperatures . These designs are significantly more expensive than soft-seated alternatives due to the precision machining and hardfacing required.
Valve design complexity directly impacts cost. Concentric designs are the most affordable but experience more friction and wear during operation.Double-offset designs reduce friction and improve seat life, making them suitable for moderate cycling at high temperatures . Triple-offset designs provide zero leakage and are preferred for critical high-temperature applications, but command the highest prices . The triple-offset geometry eliminates rubbing contact between the disc and seat, extending service life in demanding thermal services .
Body Material and Construction
The choice of body material affects both temperature capability and cost. For 500°C service, high-alloy stainless steels such as CF8M (316) or CF3M (316L) are standard . For even higher temperatures, 310S stainless steel (2520 grade) can withstand temperatures up to 650°C . High-nickel alloys such as Inconel are specified for the most demanding services but significantly increase the valve price .
The high-temperature stainless steel butterfly valve DN50 is an essential component for 500°C applications, offering reliable flow control in power generation, petrochemical, and thermal fluid systems. As of 2026, prices for manual metal-seated models range from approximately $55 to $1,800 USD depending on the brand and design complexity. Premium imported valves with triple-offset design and Inconel seats command the highest prices, while more economical domestic options provide basic functionality within their rated limits.
When selecting this valve, pay careful attention to the seat material (metal with Stellite or Inconel hardfacing is mandatory for 500°C), design configuration (double-offset or triple-offset is recommended), and pressure rating. For the most competitive and accurate pricing, contact manufacturers directly with your complete technical specifications. Investing in a correctly specified high-temperature stainless steel butterfly valve is not merely a purchase—it is an investment in operational safety, reliability, and efficiency in your high-temperature processes.
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