The Multiquip EM98221 is a genuine OEM Main Cycling Valve Assembly designed for the LS-series hydraulic-driven concrete pump lineup, including LS300, LS300P, LS300GK, LS300G, LS400, LS40D, LS40TD, LS500, LS50TD, LS600, LS600P, and LS60TD models. As a direct OEM replacement sourced through Multiquip's authorized parts network, the EM98221 delivers the same tolerances and hydraulic compatibility as the original component installed at the factory. Confirm your model code against the fitment list above before ordering to ensure a correct, hassle-free installation. DHS Equipment stocks this part and stands behind its fitment accuracy.
Key Features
- Genuine OEM Hydraulic Compatibility — Engineered to match the exact flow characteristics and pressure ratings of the original valve assembly, ensuring consistent cycling performance in the LS-series hydraulic circuit.
- Direct-Swap Installation — Shares the same port configuration and mounting interface as the original, so the assembly seats and seals correctly without reworking hydraulic lines.
- Broad LS-Series Fitment — Confirmed for LS300, LS300P, LS300GK, LS300G, LS400, LS40D, LS40TD, LS500, LS50TD, LS600, LS600P, and LS60TD concrete pumps.
- Consistent Stroke Sequencing — A properly functioning cycling valve maintains precise alternating strokes between the two concrete cylinders, preserving steady output pressure and flow at the delivery end.
- Pressure-System Integrity — Valve assemblies operating in high-pressure hydraulic circuits must meet strict sealing and actuation standards; using a genuine OEM part protects the integrity of the entire pump hydraulic system.
The main cycling valve assembly is the hydraulic control component responsible for alternating the direction of the concrete pistons inside an LS-series concrete pump. It receives a signal from the hydraulic circuit and switches fluid flow between the two concrete cylinders in sequence, creating the push-pull stroke action that moves concrete through the delivery line. When this valve wears, sticks, or fails to cycle correctly, the pump loses stroke synchronization — leading to pressure fluctuations, reduced output, or a complete loss of concrete delivery. Replacing a degraded cycling valve assembly restores proper sequencing and protects the downstream hydraulic components from the stress of irregular pressure spikes.
Part Details
| Part Number | EM98221 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Main Cycling Valve Assembly |
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 | LS300P |
| Mayco Pumps | LS600P |
| Mayco Pumps | LS300GK |
| Mayco Pumps | LS300G |
| 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.
