Hastelloy Gate Valve DN65 Price for Strong Acid and Alkali Service
With Hastelloy C-276 and C-22 alloys providing exceptional resistance to hydrochloric acid, sulfuric acid, wet chlorine, and caustic solutions, these valves deliver reliable service where stainless steel and even high-grade alloys would rapidly fail. This article provides essential 2026 pricing information and key selection parameters for DN65 Hastelloy gate valves for strong acid and alkali applications.The main gate valve product names of China gate valve Network include:API Pneumatic Lug&wafer Knife-shaped Gate Valve,API Cryogenic Gate Valve,Electric Wafer Knife-shaped Gate Valve,Electro-hydraulic Wafer Knife-shaped Gate Valve,Pneumatic Wafer Knife-shaped Gate Valve,Pneumatic Wear-resistant Ceramic Discharge Gate Valve,Rising Stem Resilient Seat Seal Gate Valve.
2026 Price Reference for DN65 Hastelloy Gate Valve
Prices for DN65 Hastelloy gate valves vary based on alloy grade, pressure rating, and configuration:
Hastelloy C-276 PN16 flanged models with metal hardfaced seats are available from approximately $2,500 to $3,500 USD ex-works .
Hastelloy C-276 PN25 configurations range from approximately $3,050 to $4,150 USD .
Hastelloy C-22 models (PN16) are priced from approximately $2,900 to $3,850 USD .
Domestic market reference pricing for Hastelloy C-22 gate valves DN50-DN100 with PN16/Class 150 ratings ranges from approximately 8,000 to 20,000 CNY ($1,100 to $2,750 USD), with larger sizes commanding premium pricing .
Hastelloy C-276 ball valves DN65-DN150 with PN40/Class 300 are listed at approximately 9,000 to 30,000 CNY ($1,240 to $4,130 USD), serving as a comparative reference for alloy valve pricing .
Key factors affecting price include specific Hastelloy grade (C-276 vs C-22 vs B-2), pressure rating (PN16 to PN64/Class 150-600), seat type (metal hardfaced vs soft-seated), and certification requirements such as NACE MR0175 for sour service applications .
Why Hastelloy for Strong Acid and Alkali Service
Hastelloy nickel-based alloys offer several critical advantages for highly corrosive service:
Superior Corrosion Resistance: Hastelloy C-276 provides outstanding resistance to strong acids (hydrochloric, sulfuric, hydrofluoric), wet chlorine, hypochlorite, and aggressive chemical media where 304/316 stainless steels would rapidly fail . Alloy C-22 offers enhanced resistance in oxidizing media, while C-276 excels against reducing and mixed acids .
High Temperature Stability: Hastelloy maintains high strength and oxidation resistance at elevated temperatures, making it suitable for high-temperature corrosive applications . Standard Hastelloy gate valves operate from -29°C to 550°C depending on grade .
Dual-Phase Structure: The nickel-chromium-molybdenum matrix provides exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride environments .
Technical Specifications
DN65 Hastelloy gate valves are available with flanged connections per ASME B16.5, with rising stem (OS&Y) bolted bonnet design . Body materials are cast ASTM A494 CW-12MW or wrought B574 N10276 . Wedge and seat rings are typically hardfaced with Stellite alloy for wear resistance and reliable sealing .
Sealing surfaces feature metal hardfacing for extended service life in abrasive corrosive service . Valve stems are solid Hastelloy C-276 . Seat and shell testing per API 598 ensures bubble-tight zero leakage . Positive Material Identification (PMI) and Material Test Certificates (EN 10204 3.1) are provided with every order .
Application Industries
Hastelloy gate valves serve critical functions in chemical processing handling hydrochloric acid, sulfuric acid, and aggressive solvents ; wet chlorine and hypochlorite systems ; pharmaceutical and hydrometallurgical plants ; flue gas desulfurization (FGD) scrubbers ; and high-pressure hydrochloric acid service up to 16 bar .
Selection Considerations
When specifying a DN65 Hastelloy gate valve, verify alloy grade matches your specific corrosive media. Select C-276 for reducing acids and chlorides; C-22 for oxidizing environments . Specify metal hardfaced seats for wear resistance in severe service . Ensure flanged connections match your piping standard. For sour gas or H₂S environments, specify NACE MR0175 compliance .
Summary
DN65 Hastelloy gate valves are essential for reliable isolation in strong acid and alkali service, with 2026 prices ranging from approximately $2,500 USD for standard C-276 configurations to over $4,100 USD for higher pressure ratings. The combination of exceptional chemical resistance and high-temperature stability ensures long service life where standard alloys would rapidly fail. Selection requires careful evaluation of alloy grade, pressure rating, and seating type based on specific service conditions. Consulting with qualified manufacturers who provide certified material test reports and PMI verification is strongly recommended for critical corrosive applications.
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