News

how to test the performances of the PVC ball valve made in china ?

  The size test: generally speaking, if the quality of the PVC ball valve made in china is very high, then when the production manufacturer producing them would had adopts the high production technology, so its size would up to the national standard requirements, for example, its size should meet up to the GB/T5836.2-2006 standard requirements, the tolerance between the middle inner diameter and the deep wall thickness should be equal or beyond the minimum ball thickness of the same specificationPVC ball valve made in china, so when you buy the PVC ball valves, you should take account more about this factor;

  The oven pilot test: to ensure the quality of the PVC ball valve made in chinais good or not, you also can choose to using the oven pilot testing method to confirm, for example, you can put one sample into the oven pilot, then after a curtain time, take out the sample and looking at the surface of the ball valves, you should make sure that there are have no bubbles and the fragmentation damage; but if the position is the spell suture place, then we can allow it has some cracking phenomenon happened;

  The drop test: generally speaking, you also can put the PVC ball valve made in chinain a very high position, then put the ball valve down to the ground, then to check the appearance of the PVC ball valve, if you find that there are have no rupture damage, then it means that this kind of the PVC ball valve has a very high quality.