Specification

DN100 PN16 Stainless Steel Electric Metal Seal Flange Ball Valve

I. Product Overview

Newway electric flange stainless steel metal seal ball valve is a high-performance automated flow control device engineered for industrial pipelines. Integrating a floating ball structure, metal-to-metal sealing, and electric actuation, it combines stainless steel durability with precise automation. Designed to handle media like oil, it features flange connections for secure integration, complying with industry standards for reliability in high-pressure, high-temperature, and corrosive environments. Suitable for industrial systems requiring remote or automated control, it balances sealing performance, operational efficiency, and adaptability, serving as a critical component in diverse industrial processes.

II. Key Attribute Parameters

Size Range: 1/2″~24″ (DN15~DN600), covering small to large-diameter pipelines to meet flow requirements in equipment interfaces, process loops, and transmission networks.

Pressure Rating: PN1.0~32.0MPa (Class 150~2500), with PN16 (1.6MPa) as a common specification, adapting to low, medium, and high-pressure systems.

Temperature Range: -40℃~425℃ (stainless steel 304/316), with material upgrades enabling operation up to 550℃ for high-temperature applications (e.g., superheated steam).

Material Configuration:

Body & Ball: Stainless steel (304/316), offering corrosion resistance—316 variants enhance resistance to chloride-rich media (e.g., offshore oil fields).

Seal: Metal-to-metal (stainless steel/Stellite-coated), designed to withstand high temps and abrasive media without degradation.

Actuator: Electric (AC220V standard), with optional DC24V or AC380V; featuring IP67 protection, torque output 50~5000N·m, and 90° rotation time 5~60s.

Connection Type: Flange (RF/RTJ per ASME B16.5), ensuring leak-free integration with pipeline systems, compatible with global flange standards.

Standards Compliance: Design per API 608, ASME B16.34; testing per API 598; actuator certified with IP67, CE; materials compliant with ASTM standards.

Product Overview

III. Structural Features

Electric Actuation System: Equipped with a modular electric actuator (integral with valve) for automated control, supporting remote operation via 4-20mA signals or on-site buttons. Manual override (handwheel) is included for emergency operation, ensuring functionality during power outages.

Floating Ball Design: The ball “floats” between seats, with upstream pressure pushing it against the downstream seat to form a self-tightening seal. This structure ensures tight shut-off even at low pressures, critical for preventing leaks in oil or hazardous media.

Metal-to-Metal Sealing: Precision-machined metal seats and ball surfaces (Ra ≤0.8μm) create a bubble-tight seal (ANSI FCI 70-2 Class V). Unlike soft seals, metal seals resist wear from solid particles and degradation at high temps (≥250℃), extending service life.

Stainless Steel Construction: 304/316 stainless steel resists rust, chemical erosion, and oxidation, making it suitable for humid, coastal, or mildly corrosive environments (e.g., industrial wastewater, oil with impurities).

Flange Connection: Standardized flange dimensions ensure compatibility with pipeline systems, providing a robust joint that withstands thermal expansion and pressure fluctuations—ideal for permanent installations in fixed industrial lines.

IV. Manufacturing Processes

Material Preparation: Stainless steel (304/316) raw materials undergo spectral analysis to verify chemical composition (316: 16-18% Cr, 10-14% Ni, 2-3% Mo) and ultrasonic testing to eliminate internal defects (cracks, inclusions).

Precision Machining:

Ball & Seal Surfaces: CNC grinders achieve ball roundness ≤0.01mm and surface finish Ra ≤0.8μm; seats are lapped to match ball contours, ensuring uniform contact for tight sealing across temperature cycles.

Body & Flange: CNC lathes machine flange sealing faces to flatness ≤0.05mm, with bolt holes drilled to ±0.1mm tolerance for alignment with pipeline flanges.

Actuator Integration: Electric actuators are assembled with torque limiters and position sensors, then mounted to the valve via a precision adapter plate. Linkage components (stem, coupling) are calibrated to ensure 90° rotation accuracy (±1°).

Testing & Calibration:

Valve Performance: Each valve undergoes hydrostatic shell test (1.5×rated pressure) and gas tightness test (0.6MPa nitrogen) with leakage ≤0.1×10⁻⁶ mL/s.

Actuator Function: Actuators are tested for 1000+ open/close cycles to verify torque output, response time, and position accuracy; IP67 waterproof testing ensures resistance to dust and water ingress.