Pneumatic 3-way Ball Valve ISO ANSI Stainless Steel Reversing Valve Switching Valve

TIANYU Pneumatic 3-Way Ball Valve: A Precision Solution for Industrial Fluid Diverting Control

I. Technical Overview

II. Core Product Features

(A) Three-Way Flow Control Design

• L/T Mode Switching: The L-type switches between two perpendicular channels (e.g., medium redirection), while the T-type connects three channels for diversion or confluence, with a switching accuracy of ±0.5° to meet DCS system precision requirements;
• Low Flow Resistance: The flow path follows ASME B16.34, with a resistance coefficient ≤0.8 (same-diameter pipeline), reducing pressure loss by 40% compared to traditional globe valves, saving ~12,000kWh annually;
• Bidirectional Bubble-Tight Sealing: The seat uses PTFE + carbon fiber reinforced material with spring preloading, achieving bidirectional sealing (leakage rate ≤1×10⁻⁹m³/s), compliant with API 598 Class IV.

(B) Pneumatic Drive Advantages

• Rapid Response System: Double-acting pneumatic actuator responds within ≤0.8s (DN100 model), supporting 0.4–0.7MPa air pressure, integrable with solenoid valves, positioners, and other accessories;
• Dual-Mode Actuation: Offers double-acting (pneumatic bidirectional) and single-acting (spring return) actuators. The single-acting type automatically resets to a safe position during air loss, suitable for emergency shutdown;
• Explosion-Proof Design: Optional ATEX-certified actuators suit Class I, Div. 1 hazardous areas, complying with petrochemical explosion-proof standards.

(C) Material & Structural Advantages

• Fully Forged Stainless Steel Body: Forged from 304/316 stainless steel (forging ratio ≥4:1), with tensile strength ≥515MPa, resistant to chloride stress corrosion for coastal and chemical environments;
• Maintenance-Free Design: The stem uses a blowout-proof stepped structure (ASME B16.34) with V-type PTFE packing, lasting 100,000 cycles with a 24-month maintenance interval;
• Lightweight Compact Design: 25% lighter and 30% more space-efficient than cast steel valves, facilitating installation in high-altitude or confined spaces.

III. Key Technical Attributes

IV. Precision Manufacturing Processes

(A) Forging & Machining

• Body Forming: Stainless steel billets forged by 1000-ton friction press, with ASTM No.7+ grain size, UT-tested for defects (sensitivity ≥Φ1.2mm);
• Ball Precision Machining: 5-axis CNC ground to ≤0.005mm roundness, ≤0.01mm fit with seat, Ra≤0.8μm roughness for sealing precision;
• Actuator Assembly: Pneumatic actuator cylinders undergo anodic hardening, end caps use metal polyester coating, and output shafts are electroless nickel-plated for corrosion resistance.

(B) Quality Control

• Full Inspection: 100% air pressure test (0.6MPa, 15-min hold), CMM measurement for key dimensions (accuracy ±0.02mm);
• Life Testing: Sampled for 50,000 cycles (under pressure) with ≥95% sealing retention, exceeding industry standards (30,000 cycles);
• Certifications: CE, SIL functional safety certified, some models comply with API 6D and ISO 9001.