What type is used for pneumatic isolation valves in large-diameter hydrogen pipelines?
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Gentlemen, for hydrogen pipelines with DN450 specifications, operating at 45 degrees Celsius and 0.05 MPa pressure, what type of pneumatic shut-off valve would be suitable? I saw for pneumatic cut-off ball valves; the largest size listed in the catalog is DN300
Butterfly valves are suitable for large diameters; they have the same angular stroke as ball valves, and their cost is lower for the same diameter: 412372706
Isn’t the tightness of butterfly valves not very good? The medium in question is hydrogen
There are numerous butterfly valves used for hydrogen. Choose the appropriate model and opt for manufacturers that guarantee good quality
There are many ball valves available with a model number of 450; just choose another manufacturer
Is this even more chaotic in terms of parameter modification than yours? Since the design institute designed it this way, there must be a reason for it
A butterfly valve is the preferred choice, with a valve port that features a soft connection. There are many joint ventures in the field of tooling; for reference.
We asked our supplier, and ball valves will do; ones in the 60-inch range are available
Butterfly valves are the preferred choice; we use them for handling highly toxic vinyl chloride. It’s advisable to purchase a high-quality version, as it can last for over a decade without any problems. Ball valves can handle 450 pressure without issue, but they are not the best choice in terms of cost. It’s not cost-effective; it’s large and bulky, with high switching torque as well.
When the operating pressure is not high, a butterfly valve can be used for the shut-off valve, and a soft seal can be employed when the temperature is not high.