PPR ball valve which face is open, which face is closed, there is a o, there is a s, which is off, ah, which is open, well intentioned people told me that the original finished by forget
Hello, I am glad to answer for you. O is on, s is off. I hope I can help you.
Hello, I am glad to answer for you. O is on, s is off. I hope I can help you.
Hello, I am glad to answer for you. O is on, s is off. I hope I can help you.
