Specification

DN100 PN16 Pneumatic Ceramic Discharge Double Gate Valve

I. Product Overview

NEWWAY DN100 PN16 Pneumatic Ceramic Discharge Double Gate Valve is a high – performance industrial valve engineered for harsh – condition applications involving abrasive, high – viscosity, or corrosive media. Leveraging advanced ceramic sealing technology and pneumatic actuation, it delivers reliable flow control, tight sealing, and exceptional wear resistance. Designed to meet the demands of industries like power generation, mining, and chemical processing, this valve ensures stable operation in scenarios such as ash handling, slurry transport, and corrosive fluid discharge, minimizing downtime and maintenance costs.

II. Key Attribute Specifications

1. Basic Dimensions and Pressure Rating

Nominal Diameter (DN): DN100, catering to medium – sized pipeline systems. This size balances flow capacity and installation space, suitable for typical industrial pipelines transporting abrasive media like ash slurries or mineral concentrates.

Pressure Rating (PN): PN16 (1.6MPa), aligning with low – to – medium pressure industrial pipelines. It can safely handle media pressure in applications such as power plant ash discharge lines (usually 0.6 – 1.2MPa) and mining slurry pipelines, ensuring structural integrity under normal operating conditions.

2. Material Composition

Valve Body: Crafted from high – quality cast steel (WCB as standard; optional stainless steel like 304/316 for enhanced corrosion resistance). Cast steel provides robust structural strength, withstanding pipeline pressure and external mechanical impacts. Stainless steel variants are ideal for corrosive environments, such as chemical plants dealing with acidic or alkaline media.

Gate and Sealing Components: Utilizes advanced structural ceramics (alumina Al₂O₃ or zirconia ZrO₂ as the main material). Ceramics boast extreme hardness (≥HRC85), far exceeding metal materials in wear resistance. In abrasive media like fly ash (with particles of 50 – 200μm in size) or mineral slurries, ceramic gates and seats maintain surface integrity, resisting particle erosion and prolonging service life.

Stem: Made of 2Cr13 alloy steel, featuring excellent corrosion resistance and torque resistance. The stem connects the pneumatic actuator and the gate, transmitting actuation force. Its alloy composition prevents rust and deformation under long – term operation, ensuring smooth gate movement.

Packing: Flexible graphite packing is employed. It offers high – temperature resistance (up to 450℃ in short – term, stable at 350℃ for long – term), good sealing performance, and self – lubricating properties. This prevents media leakage along the stem, even under temperature fluctuations and pressure changes, maintaining a clean and safe working environment.

3. Actuation and Control

Pneumatic Actuator: Adopts a double – acting (default; single – acting optional for fail – safe requirements) aluminum alloy cylinder. Aluminum alloy combines light weight and corrosion resistance, reducing the valve’s overall weight and easing pipeline load. The double – acting mode enables fast opening and closing (full stroke within 3 – 5 seconds), crucial for emergency shutdowns in ash handling systems to prevent pipeline blockages.

Control Compatibility: Equipped with limit switches and solenoid valves, seamlessly integrating with DCS (Distributed Control System) and PLC (Programmable Logic Controller). This allows remote operation, real – time status monitoring (e.g., open/closed position feedback), and automated process control, fitting modern industrial automation needs. For example, in a power plant’s ash handling system, it can be programmed to open/close based on ash hopper levels, achieving unmanned operation.