Overview

Pneumatic dust butterfly valve, also known as powder butterfly valve or cement butterfly valve, is a dedicated pipeline on-off valve developed exclusively for media such as dust, granules, powder and dry bulk materials. Different from valves for anti-corrosion or high-temperature & high-pressure fluid service, it is optimized for dry powder working conditions. Driven by a pneumatic actuator, the valve disc rotates 90° to quickly realize pipeline cut-off, throttling and discharging control. Two standard connection types are available: flanged and wafer.

The valve body features a wide, unobstructed flow path without narrow dead zones or accumulation grooves. Matched with a highly wear-resistant resilient sealing structure, it effectively resolves issues like material buildup, jamming and abrasion when handling dry media including cement, fly ash, grain powder, plastic pellets and mineral powder. Benefiting from the fast response of pneumatic actuation, it suits assembly line processes such as automatic batching, dust removal, conveying and silo discharging. Widely deployed in dry powder conveying systems of building materials & cement, powder processing, environmental dust collection, grain storage, plastic chemical industry, mining and metallurgy, it serves as the core control valve for pneumatic powder conveying pipelines.

1、Features

·  Custom-designed for powder service, anti-jamming and no material accumulation Adopting a full-bore unobstructed passage with no internal recesses or redundant structures, the valve thoroughly prevents dust and fine particle deposition and blockage. The disc moves smoothly during opening and closing without pinching or jamming materials. Perfect for dry dust, granular and loose powder media, it fundamentally fixes common defects of ordinary butterfly valves such as powder clogging and incomplete shutoff.

·  ·  Fast pneumatic actuation with high response efficiency Equipped with a dedicated pneumatic actuator for stable and reliable air-driven operation and rapid opening/closing to instantaneously cut off or open pipelines, ideal for automatic continuous batching, pulse dust removal and intermittent discharging. It can be fitted with solenoid valves, limit switches and air filter regulator lubricator units to support remote automatic control and local manual operation, compatible with complete industrial automation systems.

·  ·  Heavy-duty wear-resistant seal with strong resistance to dust scouring Constructed with specialized wear-resistant rubber and polyurethane sealing materials featuring high toughness and outstanding anti-erosion performance against high-speed flowing dust and granules. Unlike PTFE-lined soft seals or metal hard seals, it is engineered for dry friction and scouring conditions, resisting abrasion, air leakage and powder leakage over long-term operation.

·  ·  Superior sealing performance to eliminate powder escape A flexible compression sealing design ensures tight contact between disc and sealing face, effectively blocking fine dust leakage with zero sealing gaps. It solves the prevalent problem of dust blow-by in powder pipelines, maintains a clean workshop environment and reduces material loss, optimized for low-pressure pneumatic conveying service.

·  ·  Lightweight structure with high flow capacity and low conveying resistance Compact and lightweight overall design with thin valve body wall and straight-through flow path delivers extremely low flow resistance. It creates no obstruction to pneumatically conveyed powder, reduces fan load and saves energy, especially suitable for high-volume powder transport and dust exhaust duct systems.

·  ·  Wide service adaptability with excellent dry abrasion resistance Engineered for normal-temperature dry working conditions and non-corrosive dry dust/granule media. The rigid valve body withstands airflow impact and material friction from pneumatic powder conveying, offering robust long-term resistance to dry wear with highly targeted performance for powder processes.

·  ·  Simple installation & maintenance with low cost Simple structure with few components enables easy disassembly and assembly and hassle-free upkeep. Seals can be replaced individually instead of the whole valve, greatly cutting after-sales maintenance costs. Wafer and flanged connection options fit various powder pipeline layouts for broad installation compatibility.

·  ·  Explosion-proof intrinsic safety for industrial workshop environments Fully pneumatic drive generates no electrical sparks, delivering intrinsically safe explosion-proof performance. It eliminates explosion risks in flammable and explosive dust environments, meeting safety production standards for high-risk workshops of powder processing, grain storage and chemical powder production.

Structure Diagram of Pneumatic Dust Butterfly Valve

Parts Name and Materials List

性能规范表Performance Specification Table

Outline Dimension Drawing of Pneumatic Dust Butterfly Valve

Outline Dimension Table of Pneumatic Dust Butterfly Valve

Due to the rapid R&D iteration speed of valve products from China Kaivex Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!