The Multiquip EM98226 is a genuine OEM Shuttle Unloading Relief Valve designed for the hydraulic-driven concrete pump lineup, including LS300, LS400, LS500, LS600, LS40D, LS40TD, LS50TD, and LS60TD models. As a direct Multiquip OEM part, the EM98226 is manufactured to the exact specifications required to maintain proper hydraulic system function within these Mayco concrete pump units. Sourcing a genuine OEM component like this one ensures you are installing a part that matches the original design intent — critical in a high-pressure hydraulic circuit where incorrect valve behavior can compromise the entire pumping system. DHS Equipment stocks this part to keep your concrete pump operating at full capacity with minimal interruption.
Key Features
- Genuine OEM Hydraulic Specification — Manufactured to Multiquip's exact pressure rating and flow tolerances for the LS-series hydraulic circuit, not a generic valve substitute.
- Direct Bolt-In Replacement — Engineered to match the original valve port configuration and thread specification, allowing straightforward installation into the existing hydraulic manifold.
- Broad LS-Series Compatibility — Confirmed fitment across LS300, LS400, LS500, LS600, LS40D, LS40TD, LS50TD, and LS60TD hydraulic-driven concrete pumps.
- Protects Hydraulic System Integrity — A correctly functioning shuttle unloading relief valve prevents pressure spikes from damaging downstream hydraulic components, maintaining consistent pump output and cycle control.
- Pressure Circuit Safety — In a high-pressure concrete pumping application, a failed or bypassing relief valve can lead to uncontrolled pressure buildup; replacing with the correct OEM part restores safe operating parameters.
The shuttle unloading relief valve is a critical component within the hydraulic control circuit of LS-series concrete pumps. Its role is to regulate and relieve excess hydraulic pressure during the shuttle or changeover phase of the pumping cycle, preventing pressure spikes that could damage the hydraulic pump, cylinders, or directional valves. When this valve wears out, sticks open, or fails to seat correctly, the pump may lose output pressure, cycle erratically, or develop unsafe pressure conditions — all of which can halt a pour and risk equipment damage.
Have questions about fitment or availability? Contact the DHS Equipment parts team to confirm compatibility with your specific unit before ordering.
Part Details
| Part Number | EM98226 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Shuttle Unloading Relief Valve |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | LS50TD |
| Mayco Pumps | LS40TD |
| Mayco Pumps | LS40D |
| Mayco Pumps | LS400 |
| Mayco Pumps | LS600 |
| Mayco Pumps | LS500 |
| Mayco Pumps | LS300 |
| Mayco Pumps | LS60TD |
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.
