API 602 Forged Globe Valve Description
API 602 forged stop valve is a stop valve designed and manufactured according to the API 602 standard of the American Petroleum Institute (API).
Standard regulations
API 602 standard specifies the technical requirements for gate valves, stop valves and check valves with a nominal size of less than or equal to DN100 (NPS4), including valve design, materials, manufacturing, inspection and testing. API 602 forged stop valves are widely used in devices and pipelines in petrochemical, electric power, chemical and other departments, and the working media are steam, oil, corrosive media, etc.
Advantages
Reliable high-pressure sealing
Self-tightening valve cover: The higher the medium pressure, the stronger the sealing ring compression force; Metal hard seal: resistant to erosion, high temperature corrosion, and service life of more than 100,000 openings and closings.
Compact and efficient structure
The forged steel valve body has uniform wall thickness, and the pressure-bearing strength is 30% higher than that of the cast valve;
The Y-type flow channel reduces the flow resistance by 60%, and the energy-saving effect is significant.
Convenient and safe maintenance
Inverted sealing valve stem: supports pressure replacement of packing without shutdown;
Blowout-proof valve stem design: surface nitriding treatment, tensile strength ≥760MPa.
Adaptation to extreme working conditions
Temperature range -29℃～550℃ (chrome-molybdenum steel withstands 540℃ steam);
Optional Bellows seal, completely eliminating the risk of packing leakage
API 602 Forged Globe Valve Specification
| Item | Specifications |
|---|---|
| Design Standards | API 602 (forged steel valves) + ASME B16.34 (pressure-temperature rating) |
| Pressure Level | CLASS 150～2500LB(Max 42MPa) |
| Connection method | Socket weld (ASME B16.11) / Butt weld (ASME B16.25) / Flange (ANSI B16.5) |
| Valve cover structure | Bolted type (wound gasket seal) / Welded type (all-welded seal) / Self-sealing type (internal pressure self-tightening ring) |
| Valve Body Material | A105 carbon steel / F304/F316L stainless steel / WC6/WC9 chrome-molybdenum steel |
| Sealing surface | Stellite cobalt-based alloy cladding (Stellite 6/21, hardness ≥ HRC 55) |
| Inspection Standards | API 598 Class VI zero leakage (leakage rate ≤ 0.01ml/min) |
API 602 Forged Globe Valve
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