Steam pipeline valves
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What type of gate valve is used for pipes with a steam pressure of 5 kilograms?
Z40H-16C wedge gate valve Z40H-16Q wedge gate valve
Gate valves cannot be used in pipes with a steam pressure of 5 kilograms; gate valves are used for water pipelines, while steam pipelines require ball valves or globe valves. Choose a valve based on the steam flow rate and temperature.
Ball valves for steam can’t use soft seats, right? The temperature resistance of soft seats isn’t very high, is it?
With only a pressure of 5KG, which is very low, a gate valve with a pressure rating of 10KG will suffice; there is no need to use a globe valve.
It depends on whether you follow the design provided by the design institute or go by practical application; after all, a pressure of 5 Kg is relatively low
Boss, ball valves are generally not used on steam pipes. A globe valve is sufficient for steam at a pressure of 5 kilograms
Steam pressure is classified into low pressure (P≤2.5Mpa, T≤400℃), medium pressure (2.5Mpa＜P≤6Mpa, 400℃＜T≤450℃), and high pressure (6Mpa＜P≤14Mpa, 460℃＜T≤540℃)
I recommend using a 10-kilogram globe valve, as this provides some margin and ensures tight sealing when shutting off the steam.
The selection of steam pipeline valves is related to the pipe diameter: butterfly valves are used for diameters greater than 300 MM, while globe valves are used for diameters 300 MM or less
It would be best if the suggestions given included an explanation of the principles behind their selection – why are there so many varied suggestions?
It is recommended to use gate valves for diameters larger than DN250, as such large-diameter valves are generally used as main valves that require a tight seal and easy operation; gate valves offer good sealing performance； For diameters DN80-200, globe valves are used; these valves are typically employed in process applications where regulation is necessary, and globe valves offer good regulating capabilities as well as easy operation for opening and closing ； For diameters ranging from DN15 to DN65, globe valves and stop valves are the better choices. Stop valves are convenient for adjustment, while globe valves offer better sealing performance; however, they are more difficult to operate. They are suitable for valves of smaller diameters. Choose according to your requirements.
Let’s talk about a practical example of the design of one of our systems. The device uses 30 kg of steam at DN80, 5 kg of steam at DN200, and 10 jin of steam at DN80. Gate valves are used on both the main pipes and the branch pipes (flow regulation is not required), though I haven’t studied the specific reasons in detail; let’s learn about it together*……
The lowest pressure rating valves I’ve seen are 20 kgf (150 LB); are there any with a rating of 10 kgf?
Personally, I think a plunger valve is better.
Of course, a stop valve is used; I’ve never seen a gate valve used on steam pipes
High-temperature ball valves are the preferred choice, offering good sealing quality at a low price.
A Z41H-16C gate valve will suffice. Our factory uses this model everywhere