These Rexroth valves make up the SANY concrete pump truck valve range that controls hydraulic flow on SANY concrete pump trucks. The pumping circuit, the boom, the outriggers and the agitator all depend on valves of this type holding pressure and shifting cleanly when the operator moves a lever. The listing covers two solenoid directional valves, 4WE6J70/HG24N9K4 and 4WEH25G67/6EG24N9, and the DB30-1-52/315 pressure valve.
Each unit is supplied new from our SANY spare parts range, with the cast body in its blue painted finish, the solenoid coil mounted on the end, a knurled adjustment knob on the side and the Rexroth nameplate on top. The mounting holes are drilled for the manifold face, and the plug connector arrives capped so dust stays out of the coil until the machine is wired up.
A solenoid valve on its way out usually announces itself as a function that will not hold: a boom that drifts down, an outrigger that creeps, a spool that sticks when the oil is cold. A pressure valve past its service life shows up as weak or jumpy pumping pressure and a machine that will not repeat the same stroke twice. Replacing the valve restores the circuit, but oil cleanliness, filtration and a healthy coil supply have to be right for the new part to last.
The same Rexroth families are used on lifting equipment, so crane parts suppliers and workshops that run pumps and cranes together often put a hydraulic crane part on the same order rather than opening a second shipment.
| Product type | Rexroth solenoid directional control valves and pressure valves |
| References covered | 4WE6J70/HG24N9K4; 4WEH25G67/6EG24N9; DB30-1-52/315 |
| Machine application | SANY concrete pump truck hydraulic systems |
| Condition | 100% new, not rebuilt or refurbished |
| Body | Cast valve body, blue painted finish |
| Actuation | Solenoid coil with plug connector |
| Manual override | Knurled adjustment knob on the side |
| Mounting | Top mounting holes, machined manifold face |
| Identification | Rexroth nameplate with MNR material number and FD code |
Match the valve by its nameplate, not by the machine alone. Every Rexroth unit carries the material number (MNR) and a factory code (FD) on the plate, and the MNR is the reference to quote. A SANY concrete pump truck valve can be one of several directional valves of the same body size on a machine, so the machine model on its own rarely narrows it down to one part.
Plates go missing. Construction machinery and crane spare parts that have been repainted, steam-cleaned or rebuilt often arrive with the label unreadable or gone altogether. When that happens, send a photo of the mounting face, the coil connector, the port layout on the body and the machine serial number. We compare them with the reference data and come back with the closest match rather than a guess.
Two details help. The reference is often stamped into the body as well as printed on the plate, so clean the side faces before giving up. And the FD code changes with the production batch, so a different FD on a valve carrying the same MNR is normal and does not make the part wrong.
A Rexroth valve of this size is a compact assembly, and knowing which part does what makes a repair quicker. The body is a single casting with the ports and mounting holes machined after casting, and the blue paint protects the cast surface in wet, dusty yards. Inside, the spool is moved either by the solenoid coil on the end or, where a manual override is fitted, by the knurled knob on the side, which lets a fitter test a function without energising the coil.
The coil is the part handled most in service. It is a sealed winding in a black housing, connected through the plug on the side; the cap that ships on that plug keeps dust and water out until the mating connector goes on, and it is worth leaving in place while the valve waits on the shelf. Coils and connector caps are typical of the crane electrical components we hold as spares, so a cracked plug does not mean a complete new valve.
The nameplate sits on top of the body with the MNR and FD codes, and the mounting screws are at the corners of the casting. Because coils, connectors and mounting patterns repeat across the Rexroth range, a hydraulic crane part from a neighbouring reference sometimes shares the same coil, which is worth asking about if two machines in your fleet are down at once.
Not sure which part fits your machine? Send the part number, the machine model, and a photo of the nameplate or the worn item, and our engineers — each with more than ten years in the construction machinery business — will confirm the correct reference and quote it. We advise on installation, help trace faults, and answer technical questions before and after dispatch. Since 2017 we have built this support on a supplier network covering FUWA, SANY, XCMG and ZOOMLION, so SANY spare parts and older, hard-to-find references can usually still be sourced.
Usually, yes. Send photos of the body from both sides, the port pattern on the mounting face, the coil connector and the machine serial number. The reference is often stamped into the casting as well as printed on the plate, so a clean side face may give us the number directly. Construction machinery spare parts that have been repainted or rebuilt lose their plates often, and we match them from casting marks, the machine record and the circuit the valve sits in. If nothing can be read, we will tell you exactly which measurements and photos we need before quoting.
The 4WE6 is the smaller body, a direct solenoid valve usually fitted where manifold space is tight and flow demand is modest. The 4WEH25 is the larger, pilot-operated body for heavier flow. Both are solenoid operated, both have a manual override, and both use a plug-in coil connector. The G24 in the reference indicates a 24 V DC solenoid, so confirm the supply on your machine before fitting, because a 12 V circuit will not drive the coil correctly.
It is the pressure valve of the group. It sets and limits pressure rather than directing flow, which is why the digits after the dash identify the version and the pressure setting. The valve has to be ordered as a complete reference; a unit with the same body but a different setting will not behave the same way on the machine. Send the full nameplate line and we will match it. If the plate has gone, the machine's specified pressure and the circuit diagram usually narrow it down.
New. Every unit is supplied in 100% new condition, and no rebuilt, resealed or used valves are offered under this listing. The bodies arrive with their original finish and the coils are new. If the valve you are replacing has already been rebuilt once, tell us, because that history helps us advise on what else in the circuit may need attention.
The Rexroth families in this listing appear across SANY excavators, cranes and concrete machinery, so the same body often serves more than one machine type. Fitment still comes down to the reference, because a valve that looks identical may carry a different spool, spring or coil. Send the machine model and the MNR together and we will confirm. Crawler crane parts and drilling rig components from the same families are stocked as well, which helps when one workshop looks after a mixed fleet.
Yes. Coils, plug connector caps, O-rings and seal kits are available separately for these valves, and they are the items most often needed when a machine is brought back into service. Many cross over between references, but not all, so send a photo of the old coil together with the valve nameplate and we will match voltage, connector shape and mounting. Other crane electrical components such as harnesses and connectors can be added to the same list.
Oil cleanliness comes first, because a new valve on contaminated oil will fail again quickly. Check the return filter and the suction strainer, look at the oil for metal or water, and flush the circuit if the old valve came out in pieces. Check the coil supply voltage at the plug, inspect the manifold face for scoring and fit new O-rings. Once the machine runs, cycle each function at low pressure before loading it.
