25/618901 Main Relief Valve For JCB

Part number 25/618901 is the Main Relief Valve (MRV) used primarily in JCB construction machinery, specifically their backhoe loaders.

Primary Role: It screws directly into the front loader hydraulic control valve block. It serves as the primary safeguard for the entire machine’s gear pump hydraulic system by setting and maintaining the maximum allowable system working pressure.

Cross Reference: 25/222659 and 25/929310

This component is most widely used across the following JCB heavy equipment ranges:

Backhoe Loaders: JCB 3CX, 4CX, 5CX, and 3DX series.

North American Variants: JCB 214, 215, and 217.

Specific Model Trims: 4C444, 3CXC, 4CX444, 4CN444, and 4CXSM444

25/618901 Main Relief Valve For JCB

25/618901 Main Relief Valve