Can I use checkvalve on a DIY CO2

[ikan]

I like to know if I can use checkvalve, the standard $2 clear plastic with blue insert, connected to a DIY CO2 coke bottle? Have anybody tried without blowing up the bottle. Seems to require a lot of pressure to work probably means the CO2 bottle will need to be refill more often??
Comment please before I try it tonight.
I am going to connect the CO2 silicon tube output to the water pump output and will travel for about 2 meters before flowing to the tank. Probably works like CO2 reactor also I don't need to connect an airstone as CO2 will get mix with water by the pump???
Comment also please.

[juggler]

It is certainly recommended. Prevents accidental back flow of water from tank.
I am not sure about the pump. But if it is a powerhead, shd be no problem.