Products Description
The A105 ball valve is designed to comply with API 6D, ASME B16.34, and NACE MR0175 standards. End connections are available in flange, butt-weld, socket-weld, or threaded options, with nominal sizes ranging from DN15 to DN200. It can be configured with various drive types, including manual, pneumatic, or electric actuators, and is widely used for high-pressure shut-off applications in long-distance pipelines, urban gas distribution systems, and chemical plants.
Features:
High Strength: Integral forged A105 valve body with tensile strength ≥485 MPa, yield strength ≥250 MPa, and burst safety factor ≥4.
High Sealing: Ball and seat are paired and ground, with surface nickel-plated or hard alloy-coated via supersonic spraying to achieve ANSI/FCI 70-2 Class VI zero leakage; spring-loaded seat automatically compensates for wear.
Fireproof & Anti-static: Graphite packing forms secondary sealing during fire; conductive springs between stem, ball, and valve body ensure resistance ≤10 Ω.
Stem Blowout Prevention: Bottom-mounted stem with bonnet reverse-sealing structure prevents stem ejection, allowing online packing replacement.
Multiple Connection Options: Flanged ends comply with ASME B16.5, butt-weld ends with ASME B16.25, and threaded ends with ANSI B1.20.1 (NPT) for direct pipeline installation.
Easy Maintenance: Two-piece or three-piece design enables ball and seat extraction without pipeline disassembly; extended bonnet design facilitates insulation and remote operation.
Products specification
Pressure Rating:Class 900LB
Body: A105
Ball: SS316
Stem: A182 F316
Seat: Devlon
Standards
Design and Manufacture: API 6D
Face To Face: ASME B16.10
Flanged Ends: ASME B16.5
Test And Inspection: API 598
Selection Key Points
1. Operating Parameters: Determine the valve body material based on the media, temperature, and pressure. The A105 is suitable for non-corrosive or mildly corrosive media operating at -29°C to 425°C. For natural gas containing H₂S, select the NACE MR0175 sulfur-resistant version. For temperatures below -46°C, use LF2 forged steel.
2. Sealing Type: For clean media at room temperature, select PTFE or R-PTFE soft seals; for media containing particles or at high temperatures, select Stellite metal hard seals.
3. Connection Type: For high-pressure, large-diameter main lines, select butt-weld ends; for areas subject to frequent maintenance, select flange ends; for small-diameter skid-mounted equipment, select internal threads or socket welds.
4. Actuation:
- Manual: Handle or gearbox with a keyhole to prevent accidental operation;
- Pneumatic: Double-acting or spring-return, equipped with a solenoid valve, filter-pressure reducing valve, and limit switch;
- Electric: On-off or modulating type, explosion-proof Exd IIC T6, IP68.
5. Additional functions: For underground installation, the valve stem and protective cover must be lengthened; for steam operation, a heat dissipation bracket must be provided; for bidirectional sealing, the DIB-1 structure should be selected.
A105 Ball Valve
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