These valves are essential in LPG storage, ammonia handling, brine systems, and other applications where standard carbon steel would become dangerously brittle below -29 degrees Celsius . This article provides essential pricing information and key selection parameters for DN100 low temperature steel safety valves rated for -46 degree Celsius service.The main safety valve product names of China safety valve Network include:Anti-sulfur Spring Type Safety Valve,ANSI Bellows Safety Valve,Air, Gas Valve,Ammonia-used Safety Valve,Explosion Wave Proof Safety Valve,F2-250/400 Main Safety Valve,Fan Engine Safety Valve,Freezer-used Safety Valve,Single Lever Safety Valve,Spring Fall Lift, Low Lift Thread Safety Valve,Sleeve Insulation Safety Valve,Safety Check Valve.

 Price Reference for DN100 Low Temperature Steel Safety Valve

Prices for DN100 low temperature steel safety valves vary based on brand, material grade, and configuration:

Premium imported low temperature stainless steel safety valves from established brands are available from approximately 1,250 to 1,350 CNY per unit for DN100 configurations, with bulk discounts reducing costs for larger orders .

Domestic Chinese market pricing for low temperature safety valves ranges from approximately 100 CNY for basic carbon steel models to over 1,000 CNY for premium imported configurations, depending on material grade and certification requirements .

Key factors affecting price include specific material grade (LCB vs LCC), pressure rating, connection type (flanged vs threaded), and certification requirements for low temperature impact testing.

Material Specifications for -46 Degree Celsius Service

For -46 degree Celsius service, material selection is critical to prevent brittle fracture. Valve body and bonnet materials must maintain impact toughness at the minimum design temperature. ASTM A352 LCB and LCC low temperature steel grades are specifically designed for this service, with LCC offering enhanced strength characteristics .

Standard carbon steel (ASTM A216 WCB) becomes dangerously brittle below -29 degrees Celsius and must not be used for -46 degree Celsius applications . All low temperature materials must undergo Charpy V-Notch impact testing to verify toughness at the specified minimum temperature, with complete Material Test Reports provided for all pressure-containing components .

Technical Specifications

Pressure and Temperature: DN100 low temperature steel safety valves typically handle pressure ratings up to PN64 (6.4MPa) with temperature capability from -46 degrees Celsius to +80 degrees Celsius . Some designs extend temperature range to -196 degrees Celsius for cryogenic service.

Design Features: Full lift design provides maximum discharge capacity for gas and vapor applications. Closed bonnet construction prevents media leakage to atmosphere. Some models feature cooling fins to protect spring mechanisms from temperature extremes .

Connections: Available with flanged ends per ASME, DIN, or GB standards, as well as threaded and welded connections. DN100 typically uses flanged connections for secure installation.

Applicable Standards: Compliance with cryogenic standards such as BS 6364 and ISO 28921-1 for guaranteed safety in low temperature service . GB/T 40011-2021 applies to low temperature pilot operated safety valves with working temperatures down to -196 degrees Celsius .

Low Temperature Applications

DN100 low temperature safety valves serve critical functions in LPG storage and distribution systems, ammonia refrigeration and handling, brine cooling circuits, ethylene and propylene processing, and natural gas processing facilities at temperatures around -46 degrees Celsius .

Selection Considerations

When specifying a low temperature safety valve for -46 degree Celsius service, verify material grade meets minimum temperature requirements. Specify LCB or LCC steel with certified impact test documentation. Confirm pressure rating exceeds maximum system operating pressure. Select connection type matching existing piping configuration. For critical applications, request full material test reports including Charpy impact test results.

Summary

DN100 low temperature steel safety valves are essential for safe overpressure protection in -46 degree Celsius service, with prices ranging from approximately 1,250 CNY for premium imported configurations to lower prices for domestic models. Material selection is critical, with LCB and LCC low temperature steels providing the required impact toughness at low temperatures. Selection requires careful evaluation of material grade, pressure rating, and certification documentation. Consulting with qualified manufacturers who provide certified material test reports and impact test results is strongly recommended for critical low temperature applications.

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