[robself705]

I know there is a lot of debate on PVC for pressure fittings but we have done the research, read all of the hazards and found tests that approve the schedule 40 pvc 3in that we are using has a SAFE working pressure of 200 psi. We rarely go above 60psi. In addition the burst pressure in tests shows that the pvc wont burst until 700 psi. I understand all of the concerns but a lot of the horror stories come from tanks that have been beat around, dropped, improperly glued, etc. Ours is securely mounted and cant be dropped or hit easily. We have considered building a copper tank but for the time and money required we will stick with the pvc. If we note anything unusual about it we will definitely switch. We have had much discussion about this issue. I will be doing a more in depth review of our robot when time permits.