Description

When your loader won’t lift like it used to or your three-point hitch struggles with implements it once handled easily, a faulty relief valve might be bleeding off your hydraulic pressure. When the relief valve fails, it typically sticks open, dumping your hydraulic pressure back to the tank instead of to your cylinders where it’s needed. This TISCO replacement relief valve is calibrated to 2550 PSI and gets your vintage Massey Ferguson running at full hydraulic power again.

What You’re Getting

Precision 2550 PSI pressure setting that matches your tractor’s original specifications
Precision-ground valve and seat maintain accurate pressure control despite thousands of cycles
Direct replacement for factory relief valve – no modifications needed
Quality aftermarket construction that handles the pressure cycles of daily farm use
Protects your hydraulic pump from dangerous over-pressure situations

Built for Classic Farm Work

This valve fits your TO35, MF50, MF65, MF135, MF150, MF165, MF175, and MF180 tractors – those reliable workhorses that have been handling everything from hay operations to loader work for decades. Whether you’re running a front-end loader, operating your three-point hitch, or using hydraulic remotes, proper relief valve function keeps your system working safely and efficiently.

Made to Last

TISCO builds this valve to handle the demanding conditions these older tractors face every day. The hardened components resist wear from constant pressure cycling, while the precision machining ensures accurate pressure regulation season after season. It’s the same quality protection your hydraulic system needs to keep working reliably.

Installation Notes

The valve installs in the hydraulic pump body, usually accessible after removing the pump from the tractor. Clean the valve bore thoroughly before installation; any debris can prevent proper seating. Don’t attempt to adjust or modify the pressure setting – these are factory calibrated and tampering will cause problems. Test your system with various implements after installation to make sure full pressure is restored.