| 
 If you don't wanna rent crimping tool use shark bite fitting they are Csa approved. Use a shark bite tee to cut into line outta that a shark bite valve 1/2 x3/8 then use a John  guess 3/8x1/4 coupling this is just one Wayne doing it.  the valve above in pic would be perfect but in all my years plumbing never seen that fitting for sale  good luck. |