Multiquip EM14903 Ball Stop Pin Kit

The Multiquip EM14903 Ball Stop Pin Kit is a genuine OEM replacement designed for Mayco C30HD series concrete pumps, including the C30HD, C30HDNI, C30HDNI Precision, C30HDNI Zenith, C30HDN, C30HDG, C30HDZ, and C30HDGA. This kit ships directly from authorized Multiquip inventory, so you can trust the part number matches exactly what your machine requires. Sourced from the original equipment manufacturer, the EM14903 delivers the correct material grade and dimensional tolerances your pump depends on to keep the ball valve circuit operating as designed. If you're servicing any C30HD-family concrete pump, this is the correct pin kit for the job.

Key Features

• OEM-Grade Pin Material — Manufactured to the same hardness and dimensional spec as the original, ensuring the ball stop engages and seats consistently under concrete pumping pressures.
• Complete Kit Format — Includes all necessary pin components as a matched set, so you have everything required for a full ball stop service in a single order.
• Broad C30HD Family Fitment — Confirmed for C30HD, C30HDNI, C30HDNI Precision, C30HDNI Zenith, C30HDN, C30HDG, C30HDZ, and C30HDGA Mayco concrete pump models.
• Direct-From-OEM Accuracy — Carrying the genuine Multiquip part number EM14903 means no guesswork on cross-references or compatibility — it installs into the original mounting location without modification.
• Valve Circuit Integrity — A worn or damaged ball stop pin allows the ball valve to over-travel or seat improperly, causing pressure loss and output inconsistency. Replacing with a correct OEM kit restores proper valve function.
• Pump Safety Relevance — Correct ball stop pin engagement is critical to managing hydraulic pressure within the pumping circuit; a failed pin can result in uncontrolled ball movement and pump system damage.

The ball stop pin is a precision component within the ball valve assembly of a cycloidal concrete pump. Its role is to limit the travel of the ball as it shifts between the hopper and the outlet, ensuring the ball seats fully and cleanly on each stroke to maintain pumping pressure and consistent concrete output. When the pin wears, bends, or breaks, the ball can over-travel or fail to seat correctly, leading to pressure drop, output loss, or damage to the valve seats — all of which can bring a pour to a halt. Replacing the pin kit at the first sign of wear keeps the valve circuit performing as designed and protects the surrounding pump components from secondary damage.

For questions about fitment or to confirm compatibility with your specific C30HD-series pump, contact the DHS Equipment parts team before ordering.

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.