The 90 Degree Needle Shutoff Valve is used to shutoff the flow of hydraulic fluid to each tower on a Signature Frame Machine. This is convenient for when doing multiple pulls in one area.
For instance if you are making two pulls in one area, but one tower needs to pull farther than the other, you are able to shutoff the one tower. The pressure will stay the same on that one, and you will be able to pull further with other one. It is rated for 10,000 PSI.