Engineered for reliable flow isolation in corrosive environments, the API 600 ASME 304 Stainless Steel RF Flanged Gate Valve delivers exceptional durability and performance.
Manufactured from high-grade 304 stainless steel (cast equivalent CF8), this valve provides outstanding resistance to general corrosion, oxidation, and a wide range of chemical media. Designed strictly to API 600 and ASME standards, it features a robust bolted bonnet construction and an Outside Screw and Yoke (OS&Y) rising stem design for clear visual position indication. Euipped with standard Raised Face (RF) flanged connections (ASME B16.5), this gate valve ensures smooth flow, reliable sealing, and seamless integration into critical chemical, water, and petrochemical piping systems.
Key Features & Benefits
• 304 Stainless Steel Construction: Crafted from premium 304 (CF8) stainless steel, providing excellent general corrosion resistance, oxidation resistance, and durability in demanding chemical and marine environments.
• API 600 & ASME Compliance: Manufactured to strict API 600 and ASME B16.34 standards, ensuring dimensional compatibility, structural safety, and reliable performance in global industrial infrastructure.
• RF Flanged End Connections: Features Raised Face (RF) flanges compliant with ASME B16.5 standards, ensuring easy installation, secure sealing with non-metallic gaskets, and leak-proof performance.
• OS&Y Rising Stem Mechanism: Features an Outside Screw and Yoke design with a non-rotating rising stem, providing a clear visual indication of valve position and protecting stem threads from corrosive media exposure.
• Full Port Flow Area: The full bore design matches the pipeline diameter, minimizing flow resistance, reducing pressure drop, and facilitating pipeline pigging operations.
• Stellite Hard-Faced Trim: Seat rings and wedge seating surfaces are overlaid with Stellite 6 (Co-Cr-W alloy) to resist severe erosion, corrosion, and galling, ensuring long service life.
Technical Specifications
Parameter | Specification |
Valve Type | Stainless Steel Flanged Gate Valve |
Design Standard | API 600, ASME B16.34 |
Body Material | 304 Stainless Steel (CF8) |
End Connection | Flanged (RF) per ASME B16.5 |
Pressure Rating | Class 150LB - 2500LB |
Size Range | 2" to 24" (DN50 - DN600) |
Temperature Range | -196°C to +425°C |
Trim Material | 304 SS, 316 SS, or Stellite Hard-Faced |
Operation | Manual Handwheel / Gear Operator |
Testing & Inspection | API 598 |
Applications
This high-performance 304 SS RF flanged gate valve is widely deployed in:
• Chemical Processing: Handling corrosive chemicals, weak acids, and oxidizing media.
• Petrochemical Plants: Corrosive fluid isolation and distribution systems.
• Water & Wastewater Treatment: Seawater, desalination, and corrosive wastewater systems.
• Marine & Offshore: Shipbuilding, offshore platforms, and coastal facilities requiring saltwater corrosion resistance.
• Food & Beverage: High-purity processing lines requiring sanitary and corrosion-resistant materials.
FAQ
Q: What does 304 stainless steel mean in gate valves?
A: 304 stainless steel (cast equivalent CF8) is the most widely used austenitic stainless steel. It offers excellent general corrosion resistance, good formability, and high-temperature strength, making it ideal for chemical processing, water treatment, and food industries.
Q: What is an RF (Raised Face) flange?
A: RF stands for Raised Face. It is a flange type where the gasket seating surface is raised above the bolting circle. RF flanges are typically used with non-metallic gaskets (like PTFE or EPDM) and are the most common flange type for low to medium-pressure corrosive applications.
Q: Why choose an OS&Y (Outside Screw and Yoke) design?
A: The OS&Y design features a rising stem that moves up and down with the handwheel, providing a clear visual indicator of whether the valve is open or closed. Additionally, the stem threads are located outside the valve body, preventing them from being exposed to corrosive media, which significantly extends the valve's lifespan.
