ANSI Gate Valve

ANSI Gate Valves are designed to provide efficient shut-off capabilities in various industrial applications. These valves comply with ANSI (American National Standards Institute) specifications, ensuring high-quality manufacturing standards, reliability, and durability. They are commonly used in industries such as oil & gas, petrochemicals, water treatment, power plants, and refineries, where tight shut-off and minimal pressure drop are essential.

Key Features:

• Design Standard: ANSI B16.34 / API 600 / API 602 / API 603
• Construction: Available in Bolted Bonnet, Pressure Seal Bonnet, and Welded Bonnet designs
• End Connections:
  • Flanged Ends – ANSI B16.5
  • Butt Weld Ends – ANSI B16.25
  • Socket Weld Ends – ANSI B16.11
  • Screwed Ends – ANSI B1.20.1 (NPT)
• Operation:
  • Handwheel Operated – for manual operation
  • Gear Operated – for larger sizes
  • Actuated Options – Pneumatic, Hydraulic, or Electric Actuators
• Pressure Ratings: ANSI Class 150, 300, 600, 900, 1500, 2500
• Size Range:
  • Inches: ½” to 24”
  • Metric: 15mm to 600mm
• Flow Characteristic: Bi-directional flow with low pressure drop
• Tight Shut-off: Full gate closure ensures zero leakage

Material of Construction:

ANSI Gate Valves are manufactured from different materials based on the application and working conditions:

1. Body & Bonnet Material:
   • Carbon Steel (ASTM A216 WCB, A105, A350 LF2) – Suitable for general industrial use
   • Stainless Steel (ASTM A351 CF8, CF8M, CF3, CF3M, A182 F304, F316, F316L) – For corrosion resistance
   • Alloy Steel (ASTM A217 WC6, WC9, C12, C5) – For high-temperature applications
   • Duplex & Super Duplex Stainless Steel (ASTM A890, A995 GR 4A, 5A, 6A) – For aggressive environments
   • Bronze (ASTM B62, B148) – For marine and seawater applications
2. Trim Material (Gate, Seat, Stem):
   • 13% Cr Stainless Steel (SS 410, SS 420) – Standard for carbon steel valves
   • Stainless Steel 304 / 316 – For corrosion resistance
   • Hard-faced trims (Stellite, Monel, Hastelloy) – For high-wear resistance

Working Conditions:

• Maximum Working Temperature: Up to 600°C (depending on material selection)
• Working Pressure:
  • Class 150: 285 psi (19.6 bar)
  • Class 300: 740 psi (51.1 bar)
  • Class 600: 1480 psi (102.1 bar)
  • Class 900: 2220 psi (153.1 bar)
  • Class 1500: 3705 psi (255.5 bar)
  • Class 2500: 6170 psi (425.3 bar)
• Medium Compatibility: Steam, Water, Oil, Gas, Air, Chemical Fluids

Applications:

ANSI Gate Valves are widely used in:

• Oil & Gas Pipelines – To regulate and shut off the flow of hydrocarbons
• Petrochemical & Chemical Processing – Handling aggressive chemicals and high pressures
• Power Plants – Controlling steam and high-temperature fluids
• Water & Wastewater Treatment – Large-diameter gate valves for water distribution
• Refineries – Managing crude oil and refining processes
• Marine & Offshore – Corrosion-resistant versions for seawater applications

Advantages of ANSI Gate Valves:

• Full Bore Design – Ensures unrestricted flow with minimal pressure loss
• Bi-Directional Sealing – Effective sealing from both directions
• Rugged Construction – Designed for high-pressure, high-temperature applications
• Long Service Life – Durable construction with replaceable components
• Wide Range of Sizes & Pressure Ratings – Suitable for various industrial needs