Extended Stem Ball Valves, ASTM A350 LF2, DN400, PN100, BW

Product Name: Extended Stem Ball Valves
Type: Fully Welded Ball Valve
Body Material: ASTM A350 LF2
Size: DN400, 400 mm, 16 Inch
Pressure: PN100, Class 600 LB
End Connection: BW
Operation: Gear Operated
Temperature Range: -46°C to 120°C

Fully welded ball valves, also known as welded body ball valves, feature a body that is completely welded. They are designed as stop or shutoff valves for water and gas supply systems, heat-power engineering, housing and municipal services, as well as process lines in chemical and oil-refining plants and pulp-and-paper production facilities. The forging materials undergo ultrasonic examination in accordance with ASME nondestructive testing requirements, and the welding seam on the connection face is subjected to liquid penetration inspection. A corrosion allowance is provided in the body wall thickness. Critical components, including the carbon steel stem, fixed shaft, ball, seat, and seat ring, are chemically nickel-plated according to ASTM B733 and B656. Additional corrosion-resistant materials are available based on user requirements. Valve materials can be selected according to NACE MR0175/ISO 15156 or NACE MR0103 standards. Strict quality control and inspection are carried out throughout manufacturing to ensure full compliance with applicable standards and reliable performance in sulfurized service 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, 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

Product Features

» Fully welded body
» Two-piece or three-piece body design
» Metal-to-metal sealing or soft sealing
» Full bore or reduced bore
» Flanged end or welded end
» Double block and bleed (DBB)
» Locking device
» Single-piston or double-piston effect
» Automatic internal body pressure relief
» Emergency sealant injection system
» Fire-safe design with anti-static device
» Blowout-proof stem design
» Body vent device
» Suitable for underground installation
» Optional extended bonnet
» Optional extended stem
» Ensures no potential body joint leaks for environmental safety
» Forged steel body provides uniform fine-grain structure and toughness
» Free from common casting defects such as porosity or gas holes