1. Ultra-low Temperature Valves
Temperature range: -196°C to -100°C
Application: For ultra-low temperature media such as liquefied natural gas (LNG), liquid oxygen, and liquid nitrogen.
Material: Usually stainless steel, nickel alloy and other low temperature resistant materials are used.
2. Low Temperature Valves
Temperature range: -100°C to -29°C
Application: For cryogenic gas, refrigeration system, etc.
Material: Common materials include stainless steel, low temperature carbon steel, etc.
3. Normal Temperature Valves
Temperature range: -40°C to 120°C
Application: For normal temperature media such as water, air, and oil.
Material: Common materials include carbon steel, cast iron, bronze, etc.
4. Medium Temperature Valves
Temperature range: 120°C to 450°C
Application: For medium temperature media such as steam, hot water, and hot oil.
Material: Common materials include carbon steel, alloy steel, stainless steel, etc.
5. High temperature valve
Temperature range: ＞450°C
Application: Used for high temperature media such as high temperature steam, hot air, high temperature oil, etc.
Material: Common materials include alloy steel, stainless steel, heat-resistant steel, etc.
How do I properly install and maintain an API 594 check valve?
Temperature Classification of API Valves
Introduction to API Safety Valves
Recommended API Ball Valves
API 594 vs. API 6D vs. API 602: Core Differences in Check Valve Standards and Selection Guidelines
Valve Standard for Petrochemical Industry