The Multiquip EM98276 Main Relief Valve is a genuine OEM component designed for LS300, LS300G, LS300GK, LS300P, and LS600P hydraulic-driven concrete pumps. As a direct OEM replacement sourced through Multiquip's authorized parts program, this valve is built to the same specification as the original unit installed at the factory. Correct hydraulic pressure regulation is critical to consistent concrete pump output, and the EM98276 ensures your machine operates within its designed pressure range. DHS Equipment stocks this part to keep your Mayco and LS-series pump operations running without unnecessary interruption.
Key Features
- Genuine OEM Pressure Specification: — Manufactured to the exact hydraulic pressure rating required by LS-series concrete pump circuits, ensuring the relief valve opens and closes at the correct threshold.
- Direct-Mount Replacement: — Engineered to install directly into the existing hydraulic manifold port on compatible LS-series pumps, matching original thread pitch and body dimensions.
- Broad LS-Series Compatibility: — Confirmed fitment for LS300, LS300G, LS300GK, LS300P, and LS600P hydraulic-driven concrete pump models.
- Hydraulic Circuit Protection: — A correctly functioning main relief valve prevents overpressure conditions that can damage hydraulic cylinders, hoses, and the pump drive system.
- Pressure Integrity Under Load: — Maintains stable hydraulic output during continuous pumping cycles, supporting consistent concrete placement and preventing pressure spikes during high-demand pours.
The main relief valve is a critical component within the hydraulic circuit of a concrete pump. Its job is to regulate system pressure by diverting hydraulic fluid back to the reservoir when pressure exceeds the designed operating limit — protecting the pump's cylinders, seals, and drive components from damage caused by overpressure. When this valve wears out or fails, the machine may exhibit erratic pumping pressure, reduced output, or in severe cases, hydraulic component failure that takes the pump out of service entirely. Replacing a worn valve with a correct OEM unit like the EM98276 restores proper pressure regulation and protects the broader hydraulic system.
For questions about fitment or to confirm this is the right part for your machine, contact the DHS Equipment parts team before ordering.
Part Details
| Part Number | EM98276 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Main Relief Valve |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | LS600P |
| Mayco Pumps | LS300G |
| Mayco Pumps | LS300GK |
| Mayco Pumps | LS300P |
| Mayco Pumps | LS300 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
