Posted by pete 23 on November 11, 2014 at 12:04:19 from (173.87.146.73):
In Reply to: Setting Relief valve posted by kopeck on November 10, 2014 at 16:33:50:
If depends entirely on how the added on valve is hooked up into the system. The way we usually hook them up is in parallel with the original relief valve that is in the reservoir. The factory set up with the Christmas tree valve uses the relief in reservoir which is about 1200 psi as the Christmas tree valve does not have a relief valve. If he has his hooked that way the lower relief will control the pressure.When hooked parallel you have to lock the tractor original lever in demand positon. If he is running direct to his new valve, no parallel connection he will be utilizing the relief in his new valve. That pump will stand 1500 psi, no problem as it is same pump as a 450 and they will run to 1500 psi.
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