On/Off question

[Dark Side]

I've searched for an answer but have not found what I am looking for. Now correct me if I happen to be wrong but, to keep the current reactivity that the RT/X's have; the on/off pin top requires a small surface area. Am I right?

I have an interesting way to improve the Valve if I am.

[SchoolU101]

I believe you are correct.

[athomas]

The top is the part furthest in. To maintain high reactivity, you need to maintain a large top diameter. By decreasing the top diameter, you reduce reactivity, which is why the ULT has less reactivity than the standard on-off.