Background
In automated rice production lines, fluid control precision directly determines rice texture and equipment stability, with rice metering and water dosing being particularly critical processes. Thanks to its compact structure, reliable sealing performance and fast response speed, GRAT pneumatic threaded ball valves have become the preferred components, well suited to the high-frequency start-stop operation and humid working conditions of rice cooking machines.
Key challenge
- Limited Installation Space: Rice cooking machines adopt small-bore pipelines ranging from DN15 to DN50. Traditional flanged valves feature complex installation and large footprint, failing to meet integrated design requirements.
- Insufficient Hygiene and Sealing Performance: Humid environments easily cause valve leakage and medium contamination, while frequent start-stop operations accelerate component wear.
- Poor Beat Matching: Fast processing cycles require timely fluid control response; delayed response impairs metering accuracy and rice texture.

Operation Condition
Product: Pneumatic On-Off Internal Thread Ball Valve
Media: Water, rice
Nominal Pressure: 1.6 MPa
Bore Size: DN25
Temperature Rating: ≤120℃
Actuation Mode: Double-acting
Material: Stainless Steel 304
Sealing Type: Soft seal
Connection Method: Threaded connection
Power Supply: AC220V
Protection Class: IP67
Commissioning Date: 2025
Location: Nanjing


Performance Result
- Simplified Installation: Internal threaded connection fits small-bore pipelines without flanges, reducing installation space. Food-grade 304 stainless steel construction resists moisture and prevents contamination.
- Zero Leakage & Contamination Prevention: PTFE soft seal combined with line seal achieves zero leakage, eliminating dripping and contamination, reducing wear, extending service life and lowering maintenance costs.
- Fast Response: Pneumatically actuated with full-stroke response within 1–2 seconds, adapting to high-frequency cycles. Water dosing accuracy is controlled within ≤±1%, ensuring precise processing.
- Condition Adaptability: Optimized parameters accommodate humid environments, ensuring stable on-off operation, mitigating water flow impact and preventing rice dispersion.
Call to Action
Optimize your rice production line’s fluid control accuracy, stability and hygiene standards with GRAT pneumatic threaded ball valves. Contact our technical team today for customized valve solutions tailored to your automated rice cooking equipment and production requirements.
