Extended Stem Ball Valve, API 6D, BS 5351, CS, SS, 1/2-48 IN

Product Name: Extended Stem Ball Valve
Type: Fully Welded Ball Valve
Design Standard: API 6D, BS 5351, ASME B16.34
Body Material: Forged Carbon/Stainless Steel
Size Range: 1/2-48 Inch (DN15-DN1200)
Pressure Range: Class 150-2500 LB (PN10-PN420)
End Connection: BW
Operation: Gear Operated
Temperature Range: -46°C to 120°C

The fully welded ball valve, also known as a welded body ball valve, features a completely welded body. These valves are designed to serve as stop or shutoff valves in water and gas supply systems, heat and power engineering, residential and municipal services, as well as process lines in chemical plants, oil refineries, and pulp-and-paper production facilities. Forged materials undergo ultrasonic testing in accordance with ASME nondestructive flaw detection standards. The welded joint at the connection face is inspected using liquid penetrant testing. A corrosion allowance is incorporated into the body wall thickness. The carbon steel stem, fixed shaft, ball, seat, and seat ring are treated with chemical nickel plating according to ASTM B733 and B656 standards. In addition, various corrosion-resistant materials are available for selection. Depending on customer requirements, valve materials can be chosen to meet NACE MR0175/ISO 15156 or NACE MR0103 standards. Strict quality control and inspection are carried out during manufacturing to ensure compliance with applicable standards and to guarantee reliable performance under sulfurizing service conditions.

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 or soft sealing options
» Full bore or reduced bore
» Flanged or welded ends
» 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 venting device
» Suitable for underground installation
» Optional extended bonnet
» Optional extended stem
» Ensures no potential body joint leaks, addressing environmental concerns
» Forged steel body ensures uniform fine-grain structure
» Provides superior toughness and avoids defects common in cast valves, such as porosity and gas holes