1. Common reasons for water leakage at the live joint are: loose joint, water leakage on the body, and damage to the live joint pad.
2. If there is water leakage at the live joint, first use a suitable wrench to evenly force it, and tighten it slowly (do not use brute force). Check while twisting, if there is no more water leakage, it means that the loose joint is caused.
3. If the union still leaks after tightening, try to check whether there are obvious cracks on the body of the union and whether there are obvious rust spots on the body of the leaking point. If so, it may be caused by the poor quality of the union body. replace.
4. If the water flows out from the wire mouth, it is not the above problem. Basically, it can be determined to be caused by the problem of the live joint pad. The main reason is that the mat is not compressed due to the unevenness of the live joint, there are foreign objects such as sediment between the live joint pad and the live joint body, and the live joint pad is damaged.
5. Open the union and remove the union pad. Clean all contact surfaces of the union.
6. Replace the new live joint pad. Note that the live joint pads are mostly cones, don't install them backwards.
7. When tightening, pay attention to ensure that the joint surfaces on both sides of the joint are parallel. Especially for radiators with multiple joints, it is necessary to tighten each joint a little at a time to ensure that each joint surface is as parallel as possible. Do not fully tighten one before tightening the other.
Precautions
1. The live joint pad should be made of good material, elastic, thick, and the surface is smooth and intact.
2. The material of the live joint pad has a scope of application, for example, it is only suitable for cold water, etc., the purchase should be consulted clearly.
3. Nowadays, many pipe fittings are connected by welding. When tightening the union, it is necessary to slowly exert force to ensure that there is no water leakage. It is not necessary to tighten it too tightly, so as not to damage the welded part and cause more trouble.