Transfering Adhesive Materials and powder without choking with Scraper Rotary Valve
                     Transferring adhesive/ sticky 
materials and powders without 
choking using the Aishin Japan 
scraper type rotary valve.
Summary 
The pharmaceutical industry faces a critical challenge: transferring sticky or 
adhesive powders without encountering choking or blockages. This issue severely 
impacts production, causing downtime and compromising output quality during 
processing. Aishin Japan's master-engineered scraper-type rotary valve tackles this 
problem, ensuring seamless material transfer and enhancing operational efficiency 
in the pharmaceutical industry.
Introduction 
Sticky powders and granules 
often cause choking and 
clogging in industrial 
processes, adhering to valve 
surfaces and disrupting 
smooth flow. The cohesive 
nature of these substances 
hampers valve rotation, 
compromising operational 
efficiency. Aishin's Scraper 
Type Rotary Valve, featuring 
specialized scraping blades, 
efficiently manages sticky 
powder and granules, 
reducing clogging risks across 
various industrial applications.
AISHIN Scraper Type Rotary Valve
The Aishin Scraper Type Rotary Valve effectively handles adhesive powders or 
granules in the pharmaceutical industry. Its innovative design prevents common 
buildup and blockages, providing a reliable solution. Equipped with a rotor and 
scraper, it carries sticky material in specially designed pockets, ensuring smooth 
entry during each rotation, particularly ideal for highly adhesive powders prone to 
clogging.
Problem Statement
The Pharma company approached Aishin seeking an efficient, dependable solution 
to ensure uninterrupted powder transfer while maintaining the highest standards of 
quality and consistency. The company specializes in tablet production of 
multivitamins and vitamin tablets. The Plant operates 24*7 and encounters 
frequent choking issues with the local rotary valve. This valve chokes every 8 hours, 
leading to increased downtime and adversely affecting production. 
Conclusion
Following the implementation of Aishin's scraper type rotary valve, the pharma 
company experienced a transformative shift. Replacing the existing local rotary 
valves, the scraper types rotary valve significantly mitigated choking occurrences, 
reducing the choking frequency from every 8 hours to just once a week—a 
remarkable 95% decrease in choking incidents. Impressed by its performance, the 
company expanded its adoption, installing six additional scraper type rotary valves. 
This enhancement not only minimized downtime but also improved operational 
smoothness, enhancing production efficiency and upholding consistent quality 
standards throughout manufacturing processes.
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