Directly Buried Fully Welded Ball Valve, ASTM A105, Custom

Product Name: PE Directly Buried Fully Welded Ball Valve
Design Standard: API 6D
Material: ASTM A105
Size: Customized
Pressure: Customized
End Connection: Butt Weld
Operation: Gearbox
Temperature Range: -46°C to 120°C
Medium: Water, Gas, Oil, etc

The fully welded ball valve, also known as the welded body ball valve, features a body that is entirely welded. It is designed to serve as a stop/shutoff valve in various applications, including water and gas supply systems, heat-power engineering, housing and communal services, as well as in process lines at chemical and oil-refining plants, and pulp-and-paper production facilities.
The forging materials used in the valve are subjected to ultrasonic examination in accordance with ASME nondestructive flaw detection requirements. The welding slope on the connection face is also inspected using liquid penetration examination. A certain corrosion allowance is incorporated into the body wall thickness to enhance durability. The carbon steel stem, fixed shaft, ball, seat, and seat ring are treated with chemical nickel plating as per ASTM B733 and B656 standards. Additionally, a variety of corrosion-resistant materials are available for users to choose from, depending on their specific needs. To meet customer requirements, valve materials can be selected based on NACE MR 0175/ISO 15156 or NACE MR 0103 standards. Strict quality control and inspection processes are implemented during manufacturing to ensure that the valves fully comply with these standards and are suitable for use in sulfidation environments.

Technical Specification

» Type: Full Weld Ball Valve
» Size Ranges: NPS 1/2-48 Inch (DN15-DN1200)
» Design Pressure: Class 150-2500 LB (PN10-PN420)
» Materials: Cast Carbon Steel, Stainless Steel, Duplex, or Other Specials
» Trim Materials: 13%Cr, SS 304, SS 304L, SS 316, SS 316L, and other specials
» Seat Materials: RPTFE, DEVLON, PEEK
» Ends Connections: Flanged RF, RTJ, Welded
» Operation: Handle, Worm Gear, Electric, Pneumatic
» Design and Manufacture: API 6D, BS5351, 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

Product Features

» Fully Welded Body
» Three Pieces Body or Two Pieces Body
» Metal to Metal Sealing or Soft Sealing
» Full Bore or Reduced bore
» Flange End or Welding End
» Double Block and Bleed
» Locking Device
» Single Piston Effect, 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
» Ensure no potential body joint leak for environmental concern.
» Also forged steel body assures uniform fine grain structure
» And toughness free from inevitable cast valves defects such as porosity, gas hole.