API 602 and API 600 are specifications published by the American Petroleum Institute (API) that define design, manufacturing and testing requirements for industrial valves. As leading gate valve manufacturer in China, we also provide the valves to match this standard. So let us have a read below about related API 600 and 602 series.
API 602 applies to small forged steel gate, globe and check valves with sizes up to 4 inches (100 mm).
It Covers Key Parameters Like:
• Valve body material – Forged steel grades specified
• Body dimensions – Minimum wall thickness, bore size, connection types
• Stem specifications – Minimum stem dimensions based on pressure class
• Seal requirements – Acceptable sealing methods and materials
API 600 applies to cast steel gate valves larger than 4 inches. It specifies design criteria for:
• Rising stem and non-rising stem valve types
• Allowable materials – Cast iron, cast steel, stainless steel
• Body dimensions – Minimum wall thickness, bore size
• Extension bonnet specifications
• Seal design parameters
The Main Difference Between API 602 And API 600 Is:
• API 602 applies to smaller forged steel valves up to 4 inches
• API 600 covers larger cast steel valves above 4 inches
Both specifications define critical design parameters to ensure valves can withstand pressure, temperature and cycling requirements in oil and gas production applications. Following API 602 or 600 helps manufacturers produce high-quality valves and helps purchasers verify valve suitability.
API 602 and 600 also define test procedures to verify emissions performance and sealing capability over the valve’s lifecycle. These “type tests” establish a baseline for valve performance and leakage rates.