Many global customers choose to buy brass valve and other valve solutions from Chinese valve suppliers due to their compelling combination of competitive pricing, proven quality systems, and rapid engineering response. For businesses focused on export-oriented production, partnering with a reliable Chinese valve supplier like QUS helps optimize cost-performance balance without compromising safety, especially when it comes to crucial components like a aluminum valve for oven or brass valve for oven .

Ningbo Qianshou Valve Co.,Ltd (QUS) is a Chinese valve supplier focusing on plug valve manufacturing. Our products are widely installed in ovens and stoves, serving as essential components like the stove safety valve. With an annual R&D investment of 5 million RMB, QUS consistently improves its development capabilities year after year, ensuring we remain at the forefront of valve technology.

We follow strict quality control protocols—including 100% leakage testing, 40,000 times life-time testing, and full dimensional checks—to ensure our valves meet international standards.

Our quality department implements comprehensive quality control system throughout the entire production process.

The quality control system of QUS primarily covers four key aspects: raw materials, suppliers, measuring tools, and the production process.

• 1. Raw Materials
  Incoming material inspection process and accessories inspection regulations.
• 2. Suppliers
  ● We exercise strict control over our partner suppliers by conducting annual audits to ensure they continuously meet our quality standards and cooperation requirements.
  ● Raw Material Management: All inspection results are documented, utilizing digital calipers with data transmission for measurable items. For components that cannot be directly measured, sealed reference samples are retained for comparison and verification.
• 3. Measuring tools
  To ensure measurement accuracy, we send our calibration tools back to the original manufacturer for annual calibration and inspection.
• 4. Production process
  ● First-piece inspection is conducted at the start of production or after any process change.
  ● Operators perform self-inspection and submit parts for final inspection;
  ● Only after the first piece is confirmed as qualified can mass production proceed;
  ● Each subsequent process verifies the quality of the previous one and reports any defects promptly;
  ● The Quality Control Department conducts regular process inspections at defined intervals.