Multiquip EM14842 Lower Seat

The Multiquip EM14842 Lower Seat is a genuine OEM component designed for Mayco concrete pump models C30HD, C30HDNI, C30HDG, C30HDZ, C30HDGA, and C30HDN. As a direct OEM replacement, it meets the original engineering standards set for this pump series, ensuring consistent performance in demanding concrete pumping applications. Verify your model code against the fitment list — this seat is confirmed compatible across the full C30HD family of cycloidal-drive concrete pumps.

Key Features

• Genuine OEM Material Integrity — Manufactured to the same material and dimensional specifications as the original, ensuring proper sealing contact and valve function in the pump's fluid end.
• Drop-In Replacement — Engineered to the original seat geometry for correct positioning within the valve assembly, requiring no reworking of the surrounding components.
• Broad C30HD Family Coverage — Fits C30HD, C30HDNI, C30HDNI Precision, C30HDNI Zenith, C30HDN, C30HDG, C30HDZ, and C30HDGA pump models.
• Valve Sealing Performance — A correctly seated lower seat maintains the compression needed for efficient concrete flow; a worn or cracked seat causes pressure loss and inconsistent pump output.
• Pressure-Side Reliability — Sourcing a genuine OEM seat ensures the part withstands the cyclical hydraulic forces and abrasive concrete slurry that accelerate wear on aftermarket alternatives.

The lower seat is a critical valve component in the fluid end of a concrete pump. It provides the seating surface against which the valve ball or poppet closes to create a pressure seal, directing concrete through the pump's discharge circuit with each stroke. When the lower seat is worn, cracked, or improperly seated, the valve cannot seal fully — resulting in backflow, reduced output pressure, and uneven concrete delivery at the pour site.

For fitment questions or to confirm compatibility with your specific C30HD pump configuration, contact the DHS Equipment team directly.

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.