The Multiquip 511278 Check Valve Seat is a genuine OEM component designed for MQ600TD80-TLRB, MQ600TD80-TLRP, MQ600H, MQ600HTB, and MQ600HTP series trash pumps. As a factory-sourced part, it meets the exact material and dimensional specifications Multiquip requires for correct valve sealing and consistent pump performance. This seat is a direct fit for the models listed above, eliminating compatibility guesswork when ordering service parts. DHS Equipment stocks genuine Multiquip OEM parts so you can get your pump back in service with confidence.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to Multiquip's exact material and surface-finish specifications, ensuring the check valve seals completely under pressure without bypass or leakage.
- Direct-Fit Replacement — Engineered to drop into the valve housing of MQ600-series trash pumps with no rework or shimming required during reinstallation.
- Broad MQ600 Series Coverage — Confirmed fitment across MQ600TD80-TLRB, MQ600TD80-TLRP, MQ600H, MQ600HTB, and MQ600HTP trash pump models.
- Sustained Prime and Flow Performance — A correctly seated check valve holds pump prime and maintains directional flow; a worn or damaged seat causes prime loss, backflow, and reduced output volume.
- Fluid-System Safety Compliance — Proper check valve seating prevents uncontrolled backflow during shutdown, protecting downstream connections and operators handling discharge lines.
The check valve seat is the sealing surface against which the check valve ball or disc presses to stop fluid from flowing backward through the pump. In a trash pump, this component is critical to maintaining prime — without a tight, undamaged seat, the pump loses its ability to hold suction, resulting in slow priming, intermittent flow, or a complete failure to move water. Over time, abrasive solids passing through the pump can erode or pit the seat surface, degrading the seal. Replacing the seat with a genuine Multiquip 511278 restores the valve's ability to close completely, keeping the pump primed and delivering full rated flow.
Part Details
| Part Number | 511278 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Check Valve Seat |
Compatibility & Fitment
| Name | Model |
|---|---|
| Trash Pumps | MQ600TD80-TLRB |
| Trash Pumps | MQ600TD80-TLRP |
| Trash Pumps | MQ600H |
| Trash Pumps | MQ600HTB |
| Trash Pumps | MQ600HTP |
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.
