1. When the valve is manufactured in batches with a certain specification, an authoritative organization shall be entrusted to test the following performance:
① Opening and closing torque of valve under working pressure;
② Under the working pressure, it can ensure the continuous opening and closing times of the valve tightly closed;
③ Detection of flow resistance coefficient of valve under pipeline water transmission condition.
2. The valve shall undergo the following tests before delivery:
① When the valve is open, the valve body shall withstand the internal pressure detection of twice the working pressure of the valve;
② When the valve is closed, both sides shall bear 1.1 times of the valve working pressure, without leakage; However, the leakage value of the metal sealed butterfly valve shall not be greater than the relevant requirements.

Fengbao valve factory is an entity factory with professional production experience and professional manufacturing technology. The company adheres to the business philosophy of "customer-oriented, quality-oriented, attentive service", integrates all kinds of professional advantage resources, and creates cost- effective products. The company has an excellent R & D team, dedicated to creating trustworthy products. Seek new development and create new brand.

The core team has gathered professionals with experience in product R & D, production and operation. The company attaches great importance to the growth of its employees while growing up, and has long been committed to the cohesion and improvement of their sense of responsibility, technical level and professional knowledge. The company provides development opportunities and platforms for every excellent employee, provides standardized system training and promotion mechanism, and helps employees to improve and grow in their own work field.

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