Yes, you need to get a new one.. I usually change mine every 2-3 months when I realize that the suction is not strong. I buy the valves online from Pupsik.
without the valve there won't be any suction, broken part also will cause of low/no suction power, you can buy it at shopee
Yes. You will required to get a new one
U need to get spare tubing and valve.
You need to change valve once torn
Yes need to get replacement
You need to get a new valve
Yes :/
Mayb
Yes