The Wacker Neuson 5000051301 is a genuine OEM Flapper Valve Gasket designed for the PDT3, PDI3, and PD3B series 75mm/3in diaphragm trash pumps. As a factory-original component, 5000051301 is manufactured to the exact material and dimensional standards required to maintain a proper valve seal within the pump's check valve assembly. This gasket fits a wide range of Wacker Neuson diaphragm pump models including the PDT3A, PDI3A, PDI3, PDT3, and PD3B, making it a go-to service part for operators running any of these 3-inch pump variants.
Key Features
- Genuine OEM Sealing Material — Manufactured to Wacker Neuson's original material specifications, ensuring the correct compression and chemical resistance needed to hold a leak-free seal in a diaphragm pump valve.
- Direct Drop-In Fit — Engineered to the exact dimensions of the flapper valve seat on PDT3, PDI3, and PD3B pump assemblies, seating cleanly without trimming or shimming.
- Broad 3-Inch Pump Compatibility — Covers multiple Wacker Neuson 75mm/3in diaphragm trash pump models, including both inline (PDI3, PDI3A) and standard (PDT3, PDT3A, PD3B) configurations.
- Restores Full Pump Efficiency — A worn or cracked flapper valve gasket allows fluid to bypass the check valve, causing pressure loss and reduced flow. Replacing this gasket restores proper directional flow and pump output.
- Verified by Part Number — Confirm fitment using part number 5000051301 against your pump's model and serial number plate before ordering.
The flapper valve gasket seals the interface between the flapper valve and its seat inside the pump's check valve assembly. In a diaphragm pump, check valves control the direction of fluid flow — one set on the inlet side draws fluid in, and one set on the outlet side pushes it out. The gasket creates a tight, pressure-resistant seal at this junction so fluid cannot leak back past the valve during each stroke. When the gasket deteriorates or takes a set, the pump loses prime, delivers reduced output, or fails to move fluid altogether — symptoms that can often be resolved quickly with a straightforward gasket replacement.
Part Details
| Part Number | 5000051301 |
|---|---|
| Old Part Number | 0051301 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flapper Valve Gasket |
Compatibility & Fitment
| Name | Models | Machine Number |
|---|---|---|
| 75mm/3in Diaphragm Pump | PD3B | 5000006802 |
| 75mm/3in Diaphragm Trash Pump | PDT3A | 5000007614, 5000007615, 5000007616 |
| 75mm/3in Diaphragm Trash Pump | PDI3A | 5000009407, 5000007628, 5000007629 |
| 75mm/3in Diaphragm Trash Pump | PDI3 | 5000009492, 5000009491 |
| 75mm/3in Diaphragm Trash Pumps | PDT3 | 5000009495, 5000007619 |
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.
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