Hydraulic pressure/flow

[Rltraver]

I upgraded to a Bobcat T650 and own several attachments that I used with my Case 1835B. I had concern with pressure ratings and checked the aux output pressure on both machines. Bobcat - 3400 PSI. Case 1500 PSI. My attachments all have various max pressures (ranging between 2250 & 3000 PSI) and my brush hog requires a flow of 15 to 20 GPM. My thoughts on the pressure issue is - Fabricate a QD pressure module that connects between the Bobcat and the attachment. I'd use two adjustable 1000 to 3500 PSI relief valves and "T" the relief ports together (do I need check valves?). The combined relief valve output would be connected the 3/8" case drain QD. Is my solution plausible? Any Unintended consequences? The Bobcat spec lists a 23GPM flow, however, the machine has 1/2" flat face QD's. Thus, I'm not 100% sure they'll actually allow 23GPM flow. If they do - will the motor function okay or will I just shorten the motor life. Thank you, Bob Traver

 

[Tazza]

What attachemnts are you running between the two machines?
Worst case, you can hook a relief valve to prevent damage, but the attachment may be able to handle the pressure just fine. That or it will find any weak points....