The Multiquip 0480570850 is a genuine OEM Volute Casing O-Ring designed for QP3 series pump models including QP3TB, QP3TS, QP3THX, QP3TK, QP3TH, and QP3TZ. As a direct OEM replacement, this seal is manufactured to the exact material grade and compression specification required to maintain a leak-free joint between the volute casing and pump body. Choosing the correct OEM seal ensures the pump maintains rated discharge pressure across both centrifugal dewatering and trash pump configurations. DHS Equipment supplies this part direct, so you can confirm part number 0480570850 against your machine and order with confidence.
Key Features
- OEM-Grade Sealing Material — Manufactured to the exact elastomer compound and cross-section dimensions specified for the QP3 volute casing joint, ensuring consistent compression and a pressure-tight seal under pump operating loads.
- Drop-In Volute Casing Fit — Seats directly into the casing groove without trimming or stretching, restoring the original sealing interface when the volute is reassembled.
- Broad QP3 Series Coverage — A single part number covers QP3TB, QP3TS, QP3THX, QP3TK, QP3TH, and QP3TZ, spanning both centrifugal and trash pump variants in the QP3 family.
- Maintains Prime and Discharge Pressure — A worn or degraded volute casing O-ring allows air ingestion and internal leakage, causing the pump to lose prime and drop flow rate. Replacing with 0480570850 restores the sealed chamber the impeller needs to move water efficiently.
- Fuel and Fluid Resistance — The O-ring compound is formulated to withstand continuous contact with water and the debris-laden slurries common in trash pump applications, resisting swelling and compression set over time.
The volute casing O-ring creates a sealed boundary between the pump's spiral casing and its mating surface, preventing water from bypassing the impeller chamber during operation. When this seal degrades — through compression set, cracking, or swelling — the pump loses the internal pressure differential it relies on to draw water and build discharge head, resulting in weak prime or complete loss of flow. Replacing the O-ring at each major service interval or whenever the volute is disassembled is the simplest way to ensure the pump returns to full operating capacity.
Part Details
| Part Number | 0480570850 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Volute Casing O-Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Trash Pumps | QP3TB |
| Trash Pumps | QP3TS |
| Trash Pumps | QP3THX |
| Trash Pumps | QP3TK |
| Trash Pumps | QP3TH |
| Trash Pumps | QP3TZ |
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.
