SpudFiles

i was looking at getting a qev with 1/2 inch inlet port. http://www.ebay.com.au/itm/1-2-Inlet-Ou ... 1028017103
pt=Pneumatic_Hydraulic_Valves_Parts&hash=item3a726f8fcf#ht_1721wt_1344
this is the one i see used the most and it seems to have 1/4 inch ports (correct me if im wrong), so could i just tap out the chamber port for 1/2 inch npt fittings?

No, you can't. Better off getting this one.

i thought about getting the one i posted for semi auto use

any justified reason for getting other one instead?