Can other types of valves than dn250 gate valves be used in the petrochemical industry? ? Please, expert!
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Excuse me, the medium is oily wastewater; what type of valve should be used in an environment at minus 30 degrees? ? ? The valve currently in use is a DN250 gate valve with a nominal diameter of 65 mm, a nominal pressure of 25 MPa, and a clamping connection method. The material is cast iron. Cast iron is particularly prone to cracking due to freezing in winter; are there any alternative valves that will not crack in cold weather?
Hello, what is the corrosion resistance of cast steel? ? Because chemicals are added to the medium irregularly, it has a certain degree of corrosiveness.
It’s cast steel; our unit has been in use for 7.8 years.
For LCB valves, if a certain quantity isn’t available, try to use them as little as possible; it’s not possible to purchase them in small quantities. Hey, please answer my question from that post you made about CL ions corroding pipes. . . .
DN250, nominal diameter 65MM? That can’t be right; gate valves don’t have clamps either. Cast iron doesn’t work at low temperatures; 304 works well and is also corrosion-resistant. To reduce costs, low-temperature butterfly valves can be used
If corrosion is a concern, go with stainless steel
-It’s 30 degrees now; WCB is no longer suitable. LCB valves are easy to buy, right? But you’re using a DN250 valve for your DN65 pipe… What does that mean?
Can a clamp with a pressure rating of 25Mpa be used to secure something? What do valves connected by such clamps look like? Please send a picture
Take a photo and check – is the pressure of the oily wastewater that high? 2.5mpa, right?