The Multiquip EM70831A Nun Plate Assembly ST80 is a genuine OEM component designed for the ST80 swing tube concrete pump. As an authentic Multiquip part, EM70831A is manufactured to the exact specifications of the original assembly, ensuring a correct, direct installation with no guesswork. This part is confirmed for the ST80 series, making it a reliable choice for operators performing scheduled maintenance or unplanned repairs on their concrete pump.
Key Features
- Genuine OEM Construction — Manufactured to the exact material and dimensional specifications of the original Multiquip assembly, ensuring consistent sealing and structural integrity within the pumping system.
- Direct-Fit for ST80 — Engineered specifically for the ST80 swing tube concrete pump, with mounting points and geometry that align directly with the original housing without modification.
- Confirmed ST80 Fitment — Verified compatibility with the Multiquip ST80 series, so you can order with confidence that this assembly matches your machine.
- Supports Consistent Pump Output — A properly seated nun plate assembly maintains the correct alignment and seal within the concrete pump's discharge path, supporting steady, uninterrupted material flow.
- Critical Wear Component — The nun plate is subject to continuous abrasion from concrete aggregate; replacing it with a genuine OEM part restores pump performance and prevents accelerated wear on adjacent components.
The nun plate assembly is a core wear component in the swing tube concrete pump's output valve system. It acts as the seating surface against which the swing tube rotates and seals during each stroke, directing concrete through the discharge port under pressure. When the nun plate wears down or becomes damaged, the pump loses sealing efficiency, resulting in concrete backflow, inconsistent output pressure, and accelerated damage to surrounding components — making timely replacement essential to keeping the pump operating at capacity.
For fitment questions or help confirming compatibility with your ST80, contact the DHS Equipment parts team for assistance.
Part Details
| Part Number | EM70831A |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Nun Plate Assembly ST80 |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST80 | ST80 |
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.
