Are 35 and 55cf tanks -cylinders of compressed gas nitrogen sold with a cap on the valve when purchased? If so how are they removed? I am a 62 year old female that wants to get someone to buy me a compressed nitrogen tank but if they have that round cap on, how does one remove it? Is it hard? Do you need special tools? I don't know anything about these tanks. The 20cf tank did not have a cap. Please let me know and what is needed. I am sick and don't have much strength. Also located in Canada.
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