The Wacker Neuson Exhaust Valve is a genuine OEM component designed for the PDT2, PDT3, PDI2, PDI3, and PG2 series diaphragm and dewatering pumps. As a factory-sourced part, it meets the exact material and dimensional standards set by Wacker Neuson, ensuring it seats, seals, and cycles exactly as the original. This valve services a wide cross-section of the Wacker Neuson diaphragm pump lineup, from 50mm/2-inch to 75mm/3-inch configurations. If your pump is losing prime, pulsing erratically, or showing a drop in discharge flow, a worn exhaust valve is a common cause — and is the correct direct replacement.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to Wacker Neuson's exact material spec, so the valve flexes and seals with the same performance as the original, cycle after cycle.
- Drop-In Replacement — Matches the original mounting geometry for the PDT2, PDT3, PDI2, PDI3, and PG2 pump valve housings, fitting directly without modification to the valve chest.
- Broad PDT / PDI / PG2 Coverage — A single part number covers both 50mm/2-inch and 75mm/3-inch diaphragm pump variants across multiple Wacker Neuson pump series.
- Restores Full Discharge Flow — A correctly functioning exhaust valve maintains the one-way flow path that drives pumping efficiency; a failed valve causes backflow, pressure loss, and erratic output.
- Fluid-System Compliance — Using the correct OEM-spec valve material matters in fluid-handling applications where incorrect elastomers can degrade, contaminate the flow path, or cause premature valve failure.
The exhaust valve is one of two check valves that control the direction of fluid flow through a diaphragm pump's valve chest. As the diaphragm cycles, the exhaust valve opens to allow fluid to exit toward the discharge port and closes to prevent it from flowing back. When this valve wears, cracks, or loses its seating ability, the pump loses the pressure differential it needs to move fluid efficiently — resulting in reduced flow, lost prime, or a complete failure to pump. Replacing a worn exhaust valve with a correct OEM part like the Wacker Neuson 5000205125 restores proper one-way flow and gets the pump back to full working capacity.
Part Details
| Part Number | 5000205125 |
|---|---|
| Old Part Number | 0205125 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Exhaust Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 50mm/2in Diaphragm Trash Pump | PDT2 | 5000009494, 5000620770 |
| 75mm/3in Diaphragm Trash Pumps | PDT3 | 5000009495, 5000620774 |
| PG2 Dewatering Pump | PG2 | 5000009496, 5000009497 |
| 50mm/2in Diaphragm Trash Pump | PDI2 | 5000009489 |
| 75mm/3in Diaphragm Trash Pump | PDI3 | 5000009491, 5000009492 |
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.
