Bison Pumps provides an upgrade kit for Standard Cylinders that have the screw-in style check valves. By replacing the out-of-date components with the Cylinder Upgrade Kit, an old-style stainless steel body standard cylinder will be brought to current model conditions. This will improve performance and allow for the use of current Maintenance Kits.
There is an upgrade kit for each cylinder size. Select the kit that matches your cylinder diameter.
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