How to do the ball valve housing test? How long does the pressure test time take?

The shell test of the ball valve is in accordance with the provisions of JB T 9092.

Hydrostatic tests are carried out.

Housing test. Pressurize the installed valve body cavity, close the two ends of the valve, and open and close parts. During the test, there should be no leakage at each connection. In addition to the bellows sealing valve, the packing gland is pressed enough to maintain the test pressure, so that the packing box is tested, and there should be no leakage at the packing box during the test.

For valves with non-adjustable stem seals (e.g., "O" rings, single-layer seals, or similar packings), the seal should be leak-free during housing testing.

The test time is related to the diameter of the valve.

Table 3 Duration of maintaining test pressure.

Valve specifications. dn

mm Hold the test pressure for the shortest duration t

The shell is sealed and sealed.

Check Valve Other Valves Check Valve Other Valves.

Note: The minimum duration of maintaining the test pressure refers to the minimum time for maintaining the specified test pressure after the pressure of the test medium in the valve rises to the specified value.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

Pro, the shell test pressure of the valve should be times of the maximum allowable working pressure of the valve, and the sealing test pressure should be times of the maximum allowable working pressure. The valve shall not be less than 5 minutes between dust incubation under the test pressure. Generally speaking, the sealing test is consistent with the strength pressure test time, and the pressure test time is related to the specifications of the valve or pipe fittings, for the valve Kai with the brother fan DN50 below, the pressure test time is 15S, and the GB standard has provisions.