API 602 Forged Gate Valves Description
API 602 forged gate valve is a steel valve that complies with API 602 standard. It is specially designed for the oil and gas industry and is suitable for high-pressure, high-temperature or corrosive media pipeline control with a nominal size of ≤DN100 (NPS 4). It covers gate valves, stop valves and check valves.
Valve body and connection method:
The valve body adopts forged steel forging technology (such as A105, F11, F22, F304L, etc.), and the pressure resistance level can reach Class 2500 (PN420).
The connection forms include internal thread (NPT), socket welding (SW), and flange (RF/RTJ), which are suitable for different pipeline requirements.
Sealing components:
Wedge gate: tightly fit with the valve seat through mechanical pressure, leakage rate ≤0.01mL/min.
Valve seat material: carbide surfacing or flexible graphite, wear-resistant and adaptable to high temperature (≤425℃).
Key design features
Compact structure: bolted, welded or self-sealing valve cover design to reduce installation space.
High pressure and impact resistance: full CNC processing technology ensures the accuracy of the valve body, suitable for high-pressure steam, oil and gas pipelines
API 602 Forged Gate Valves Specification
Place of Origin:Henan, China
Brand Name:GNEE
Model Number:Z961H 150LB
Application:General
Temperature of Media:Medium Temperature
Power:Manual
Media:Water
Port Size:customized
Standard or Nonstandard:Standard
Body material:a216 WCB
seal:metal / stainless steel
test standard:GB / T13927 API598
operating temperature:0 - 80℃
design standard:API
Color:Grey
O-ring:NBR rubber
API 602 Forged Gate Valves
Applications
Petroleum and Natural Gas
High-pressure oil and gas pipeline cutoff, wellhead device control and refining equipment medium isolation.
Chemical and Electric Power
High-temperature reactor, boiler steam system and corrosive chemical medium control.
Special working conditions
Pipeline containing particle slurry, low-temperature liquefied natural gas (LNG) and high-risk fluid.
Selection and Maintenance Points
Selection Recommendations
High pressure and high temperature: Forged steel material (such as F11/F22) and hard seal structure are preferred.
Corrosive environment: 316L stainless steel or alloy material is selected, with fluororubber/graphite seal.
Fireproof requirements: Metal sealing ring is configured to meet API 607 fireproof standards.
Maintenance Precautions
Regular inspection: Check the wear of the valve seat sealing surface every 1~2 years, and replace the spring or gasket in time.
Lubrication and maintenance: High-temperature grease (such as silicone grease) is injected into the valve stem thread every 6 months to prevent sticking.
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