मैनुअल वाल्व कें उपयोग करय कें समय, वाल्व खोलला पर मध्यम बल पर ध्यान देल जेबाक चाही, बेसि बल नहि, ताकि दुर्घटना सं बचल जा सकय. मैनुअल वाल्व कें सही उपयोग निम्नलिखित छै:
When the valve is fully opened, the handle should be turned a little in the opposite direction to make the threads tight to prevent loosening and damage. Pay attention to the rising stem here, and remember the accurate position of the valve stem when it is fully opened and fully closed, so as to prevent collision with the top dead center when fully opened. It is also helpful to check whether it is no problem when it is fully closed. If the valve disc is loose, or the valve core sealing part is mixed अपेक्षाकृत पैघ मात्रा मे अन्य मलबा के संग, रॉड के स्थिति पूरा बंद भेला पर बदलत, जेकर परिणामस्वरूप वाल्व सीलिंग साइड या वाल्व हाथ के पहिया सेहो क्षतिग्रस्त होयत{.}
वाल्व खुलबाक घटना : जखन तितली वाल्व, बॉल वाल्व आ प्लग वाल्वक तनाक उपरका भाग पर नाली चैनलक समानांतर होइत अछि , तखन एकर अर्थ होइत अछि जे वाल्व पूर्ण रूपेण खुलल स्थिति मे होइत अछि ; when the valve rod rotates to the left or right by 90 degrees, the groove is vertical to the channel, which means that the valve is in the fully closed position. Some plug valve stem top, butterfly valve, ball valve to channel and wrench into a parallel line for open, vertical for stop. The operation method of three-way and four-way reversing valve should be carried out according to the marks of opening, closing and reversing. वास्तविक संचालन के बाद, रोटरी हैंडल हटाना चाहिए{.
