When embarking on plumbing and piping systems, it is important that the connections are totally secure. The high usage degree of black pipe fittings in different industries is mainly due to its robustness and quick installations they make possible. So, it is clear that the sealing performance has to be a priority of the black fittings in order to avoid the occurrence of mechanical breakdowns. In this article, we will show you many of the methods with which the sealing performance of the black pipe connectors can be effectively checked.
Ways for Testing Sealing Performance
Air pressure test method
Firstly, the pipe system made of Black Pipe Fittings needs to get one end shut and have the air pressure pump on the other end. After that, the aim is to provide compressed air to the pipe by the pump so that the pressure becomes 1.1-1.5 times that of the working pressure. The particular multiple must comply with the stipulated standard and the pipeline plan. In addition to these, all the pressure variations need to be kept in strict watch and recorded by the pressure meters during the process of pressurizing the system.
It is clearly a good seal when the pressure remains constantly high for a particular period of time for example, 10-30 minutes, with no significant drop as otherwise. If on the other hand, the pressure decreases quickly, then it is evident that something went wrong and now the air can be used to find the leak by producing bubbles on every joint with a small cloth dipped in soapy water.
Water pressure test method:
Before starting the water pressure test, it should be ensured that all unused outlets of the pipe system are closed except one (the one from which pure water will be injected into the pipe). Pure water will be injected into the pipe through the water injection port, and the air in the pipe will be expelled at the same time, eventually the pipe will be full of water. After that, a water pump will slowly increase the water pressure in the pipe to the specified test pressure. Normally, the test pressure is 1.25-1.5 times the working pressure of the pipe. Hold the pressure steady for about half an hour and see if the connection and Black Pipe Fittings’ points show signs of water leaking.
In case of water seepage, then it shows that a sealing problem exists at the place where the water is coming out and the faulty part needs to be repaired.
Vacuum test method
The vacuum test method requires extracting the air in the pipe system that contains not only the Black Pipe Fittings but also other parts, with the help of a vacuum pump to a certain degree of vacuum such as – 0.08MPa. It will be necessary to keep that vacuum degree for a period of time (usually 15-30 minutes) and observe how the reading of the vacuum gauge changes.
If the vacuum degree remains more or less the same, the pipe is well sealed; if the vacuum degree drops significantly, it indicates that air has entered the pipe and there is a leak. Furthermore, the use of specialized equipment, such as a halogen leak detector, is a solution for finding out the exact location of the leak in the connection of the pipe. The vacuum test also plays an important role where the issue of sealing is crucial, e.g. transport of the toxic, flammable, and explosive media in the pipe systems.
Best Practices for Ensuring Sealing Performance
Use Quality Fittings: Always choose high-quality black fittings from reputable manufacturers. This ensures durability and reliability.
Proper Installation: Follow installation guidelines carefully. Ensure that threads are clean and free of debris, and use appropriate thread sealants when necessary.
Regular Maintenance: Periodically check your piping system for signs of wear or leaks. Address any issues immediately to prevent further damage.
Training and Awareness: Ensure that all personnel involved in installation and maintenance are trained in proper techniques.
Conclusion
The inspection of the sealing performance of black pipe fittings is very important to the integrity and efficiency of your piping system. Methods such as pressure testing provide a proactive approach to leak detection and quick resolution.
Jianzhi Pipe Fittings are known for being a source of high-quality black pipe connectors that are good for use in extreme pressures and temperatures.
Feel free to contact us if you are interested in our products or if you would like to have a brochure. Decide on Jianzhi Pipe Fittings as the supplier you are confident with for all your piping needs!