The Wacker Neuson is a genuine OEM Neoprene Flapper Valve designed for the PDT2, PDT2A, PDI2, and PDI2A series 50mm/2-inch diaphragm trash pumps. Sourced directly from Wacker Neuson, this part meets the exact material and dimensional specifications required for proper pump operation. The is a direct-fit replacement that installs into the valve seat without modification, restoring correct fluid flow and check function. Compatible across multiple PDT2 and PDI2 configurations, this valve is the right choice when your pump's flow rate drops or backflow becomes a problem.
Key Features
- Neoprene Construction for Chemical Resistance — Neoprene compound resists the abrasive slurries, mild chemicals, and debris-laden fluids that diaphragm trash pumps routinely handle.
- Direct-Fit Valve Seat Replacement — Matches the original valve seat geometry of the PDT2, PDT2A, PDI2, and PDI2A pump bodies, seating and sealing correctly on installation.
- Broad PDT2 and PDI2 Series Coverage — A single part number covers both the standard and inline diaphragm configurations across the 50mm/2-inch pump family.
- Restores One-Way Flow Control — A worn or torn flapper valve allows backflow and pressure loss; replacing it with 5000118370 returns the pump to full priming and discharge efficiency.
- Genuine OEM Part — Supplied by Wacker Neuson to the same material specification as the original, ensuring the valve flexes and seals to the correct compression profile for this pump design.
The flapper valve is a one-way check valve inside a diaphragm pump that controls the direction of fluid movement through the pump body. As the diaphragm flexes, the flapper opens to allow fluid in on the intake stroke and closes to prevent backflow on the discharge stroke — this cycling action is what creates suction and pushes fluid through the outlet. When the neoprene flapper becomes cracked, stiff, or torn from wear or prolonged exposure to abrasive material, the pump loses its ability to self-prime, output pressure drops, and in some cases the pump will not move fluid at all. Replacing the valve promptly with the correct OEM part restores full pumping performance.
Part Details
| Part Number | 5000118370 |
|---|---|
| Old Part Number | 0118370 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Neoprene Flapper Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 50mm/2in Diaphragm Trash Pump | PDT2A | 5000007610, 5000007611 |
| 50mm/2in Inline Diaphragm Tras h Pump | PDI2A | 5000007624, 5000007625 |
| 50mm/2in Diaphragm Trash Pump | PDT2 | 5000009494, 5000007633 |
| 50mm/2in Diaphragm Trash Pump | PDI2 | 5000009489 |
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.
