Multiquip EM20709 Solenoid

The Multiquip EM20709 Solenoid is a genuine OEM solenoid designed for C30HDN and C30HD series concrete pumps. As a direct factory replacement, this solenoid meets the original electrical and mechanical specifications required to keep your pump operating as intended. Sourced through Multiquip's authorized parts network, it is the correct specification component for these Mayco concrete pump models.

Key Features

• Genuine OEM Electrical Specification — Matches the original coil resistance, voltage rating, and actuation force specified for the C30HDN and C30HD, ensuring consistent switching performance.
• Direct Bolt-In Replacement — Engineered to the same mounting interface and connector configuration as the original, allowing a straightforward swap without fabrication or adaptation.
• Confirmed Fitment — Verified for C30HDN and C30HD Mayco concrete pump models; check your model code before ordering to confirm compatibility.
• Hydraulic Circuit Integrity — A properly functioning solenoid maintains precise control of hydraulic fluid direction, keeping pump output steady and responsive under load.
• Fuel and Fluid System Safety — In concrete pump applications, a failed or sticking solenoid can cause uncontrolled hydraulic pressure or loss of shutdown function; replacing with a correct OEM unit restores safe system control.

A solenoid is an electromechanical valve that converts an electrical signal into mechanical movement, typically opening or closing a hydraulic or fuel circuit in response to an operator command or automatic control signal. In a concrete pump like the C30HD or C30HDN, the solenoid plays a direct role in directing hydraulic pressure to the pumping cylinders, controlling output and enabling safe shutdown. When a solenoid begins to fail — sticking, not actuating fully, or drawing incorrect current — pump output becomes erratic, the machine may not respond to controls properly, or it may fail to shut down as expected. Replacing a worn solenoid with the correct OEM part restores precise, predictable hydraulic control.

Part Details

Compatibility & Fitment

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.