The Multiquip EM25421 Junction Block 2 1/2 is a genuine OEM component designed for the ST30 swing tube concrete pump. As a direct OEM replacement sourced through Multiquip's authorized parts program, this junction block is built to the same specifications as the original unit installed at the factory. If you're maintaining or rebuilding an ST30, the part is the correct part to restore proper hydraulic circuit integrity and keep your pump operating as intended.
Key Features
- Genuine OEM Construction — Manufactured to the exact material and dimensional tolerances required for hydraulic junction applications in concrete pump systems, ensuring consistent fluid routing and connection integrity.
- Direct Drop-In Replacement — Engineered to match the original ST30 mounting configuration and port dimensions, allowing straightforward installation without reworking existing lines or fittings.
- Confirmed ST30 Fitment — Verified compatible with the Multiquip ST30 swing tube concrete pump series, so you can order with confidence knowing this is the correct junction block for your machine.
- Hydraulic Circuit Reliability — A properly functioning junction block maintains clean, leak-free distribution of hydraulic flow across connected lines; a failed or cracked block can cause pressure loss, fluid leaks, and pump cycle inconsistency.
- Built for Demanding Concrete Pump Environments — Constructed to withstand the continuous hydraulic pressure cycles and harsh operating conditions typical of concrete pumping applications.
A junction block serves as a central distribution point within the hydraulic circuit of a concrete pump, routing pressurized fluid from the pump's hydraulic system to multiple connected lines or actuators. On the ST30 swing tube pump, this component plays a key role in maintaining consistent hydraulic pressure delivery across the system. When a junction block cracks, corrodes, or develops a leak at its ports, the result is reduced hydraulic efficiency, erratic pump cycling, or visible fluid loss — all of which interrupt concrete placement operations and require immediate attention.
Part Details
| Part Number | EM25421 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Junction Block 2 1/2 |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST30 | ST30 |
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.
