API 6D Fully Welded Ball Valve, ASTM A105, 28 IN, 600 LB, RF

Product Name: Fully Welded Ball Valve
Design Standard: API 6D
Body Material: ASTM A105
Size: 28 Inch, DN700
Pressure: Class 600 LB, PN100
End Connection: RF Flanged
Operation: Gear Box

The Fully Welded Ball Valve, also known as the Welded Body Ball Valve, features a robust, completely welded body designed for exceptional durability. These valves are primarily used as stop or shutoff valves in diverse systems, such as water and gas supply, heat-power engineering, housing and communal services, as well as in chemical, oil-refining, and pulp-and-paper industries.
The materials used in the manufacturing process undergo strict ultrasonic testing per ASME nondestructive flaw detection standards to ensure high quality and reliability. The connection face’s welding slope is further tested using liquid penetration methods for added quality assurance. A corrosion allowance is incorporated into the body wall thickness for enhanced protection in demanding environments.
Key components, such as the carbon steel stem, fixed shaft, ball, seat, and seat ring, are chemically nickel-plated in accordance with ASTM B733 and B656 standards. A variety of corrosion-resistant materials are available to meet specific application needs. Valve materials can be selected according to NACE MR 0175/ISO 15156 or NACE MR 0103 standards for environments prone to sulfurization. Strict quality control processes ensure these valves meet industry standards and performance requirements.

Technical Specifications

Size Range: NPS 1/2 - 48 Inch (DN15 - DN1200)
Design Pressure: Class 150-2500 LB (PN10-PN420)
Materials: Forged Carbon Steel, Forged Stainless Steel
Trim Materials: 13%Cr, SS 304, SS 304L, SS 316, SS 316L, and other special materials
Seat Materials: RPTFE, DEVLON, PEEK
End Connections: Flanged RF, RTJ, Welded
Operation: Handle, Worm Gear, Electric, Pneumatic
Design and Manufacture: API 6D, BS 5351, ASME B16.34
Face to Face (End to End): ASME B16.10
Flanged Connection: ASME B16.5, ASME B16.47
Test and Inspection: API 598, API 6D
Butt Welded End: ASME B16.25
Fire Safety: API 607, API 6A
Temperature Range: -46°C to 120°C
Medium: Water, Gas, Oil, etc.

Product Features

» Fully Welded Body
» Three-Piece or Two-Piece Body
» Metal-to-Metal or Soft Sealing
» Full Bore or Reduced Bore
» Flange End or Welding End
» Double Block and Bleed
» Locking Device
» Single Piston Effect or Double Piston Effect
» Automatic Internal Relief of Body Pressure
» Emergency Sealant Injection System
» Fire-Safe Design, Anti-static Device
» Anti-Blowout Stem Design
» Body Vent Device
» Suitable for Underground Use
» Optional Extended Bonnet
» Optional Extended Stem
» No Potential Body Joint Leaks for Environmental Protection
» Forged Steel Body for Uniform Fine Grain Structure
» Toughness Free from Cast Valve Defects such as Porosity or Gas Holes