Chrome-Molybdenum Steel High Temperature Safety Valve DN65 Price – Temperature Resistance 550℃
With chromium-molybdenum alloy construction providing exceptional creep strength and oxidation resistance at temperatures up to 550℃, these valves ensure reliable system protection where standard carbon steel would fail. This article provides essential pricing information and key selection parameters for DN65 chrome-molybdenum steel safety valves rated for 550℃ service.The main safety valve product names of China safety valve Network include:,Explosion Wave Proof Safety Valve,F2-250/400 Main Safety Valve,Fan Engine Safety Valve,Freezer-used Safety Valve,Spring Fall Lift Closed High Pressure Safety Valve,Spring Fall Lift Safety Valve,Spring Fall Lift Safety Valve With Radiator,Spring Low Lift Air Compressor Safety Valve(With Connecting Pipe).
Understanding Chrome-Molybdenum Steel for 550℃ Service
Chrome-molybdenum alloys such as ASTM A217 WC6, WC9, and 12Cr1MoV are specifically engineered for elevated temperature service. The addition of chromium enhances corrosion and oxidation resistance, while molybdenum increases structural strength and creep resistance at temperatures up to and exceeding 550℃ . For 550℃ applications, V-type chrome-moly-vanadium steel (ZG15Cr1Mo1V) is specified, while I-type chrome-molybdenum steel (ZG1Cr5Mo) is suitable up to 500℃ .
Price Reference for DN65 Chrome-Molybdenum Safety Valve
Prices for DN65 chrome-molybdenum steel high temperature safety valves vary based on material grade and configuration:
Economy segment chrome-molybdenum steel safety valves with I-type material (500℃ rating) typically range from approximately $110 to $290 USD for domestic brand models .
Premium V-type chrome-molybdenum steel safety valves rated for 550℃ service with hardfaced alloy seats command higher pricing. For reference, A48Y-16V models (chrome-moly-vanadium steel) are quoted at approximately $5,950 USD (43,220 CNY) per unit for DN65 configurations .
High-end models with imported packing, Stellite hardfacing, and comprehensive certification packages range from $360 to $720 USD .
Key factors affecting price include material grade (I-type at 500℃ vs V-type at 550℃), pressure rating (PN16 to PN160), seal type (hard seal with Stellite vs soft seal), and certification requirements.
Technical Specifications for 550℃ Service
Pressure and Temperature: DN65 chrome-molybdenum safety valves are available in pressure ratings from PN16 to PN160. V-type material (ZG15Cr1Mo1V) provides temperature capability up to 550℃ . Pressure-temperature ratings per ASME B16.34.
Materials: Body materials include ASTM A217 WC6, WC9, or C12A. Trim materials feature Stellite hardfacing on disc and seat rings for wear resistance at high temperatures. Spring material is 50CrVA alloy steel with Teflon coating for consistent performance .
Design Features: Full lift design for maximum discharge capacity, cooling fin/radiator structure to protect spring from overheating, and lever-operated options for periodic testing .
Connections: Flanged ends per JB/T 94 or ASME standards.
Applicable Standards: API 526, ASME Section VIII, GB/T 12243, and NACE MR0175 for sour service applications.
Selection Considerations
When specifying a chrome-molybdenum safety valve for 550℃ service, verify the material grade meets maximum operating temperature. For steam temperatures reaching 550℃, specify V-type chrome-moly-vanadium steel. Confirm pressure rating with appropriate safety margin. Select hardfaced Stellite trim for high-temperature steam service to ensure reliable sealing. For critical applications, request certified material test reports per ASTM A217/A217M .
Summary
DN65 Chrome-Molybdenum Steel High Temperature Safety Valves are essential for overpressure protection in 550℃ steam and thermal oil service, with prices starting from approximately $110 USD for I-type models and exceeding $5,950 USD for premium V-type configurations. Chrome-moly alloy construction provides the creep strength and oxidation resistance necessary for reliable operation at extreme temperatures. Selection requires careful evaluation of temperature rating, pressure class, and trim material. Consulting with qualified manufacturers who provide certified material test reports and performance documentation is strongly recommended for critical high-temperature applications.
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