The Wacker Neuson 1000012555 Non Return Valve is a genuine OEM component designed for the PT6Y and PT6YT series self-priming centrifugal trash pumps. As a direct OEM replacement, this valve is produced to the same specifications as the original part — ensuring correct seating, proper flow direction control, and a drop-in fit with no guesswork. Verified fitment covers PT6Y, PT6Y EPA T4, PT6YT, and PT6Y-AU variants, making this the right choice whether you are servicing a standard unit or a regional compliance model.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to original material and dimensional specs, ensuring consistent valve closure pressure and leak-free performance critical in high-volume pump applications.
- Drop-In Replacement — Matches the original mounting configuration for the PT6Y and PT6YT pump housings, allowing a straightforward swap during routine servicing or emergency repair.
- Broad PT6Y Series Coverage — Compatible with PT6Y, PT6Y EPA T4, PT6YT, and PT6Y-AU variants, consolidating fitment across multiple regional and compliance configurations into a single part number.
- Protects Pump Prime and Flow Efficiency — A properly functioning non return valve holds prime between pump cycles and prevents backflow through the inlet, keeping discharge output consistent under load.
- Fuel and Fluid System Compliance — As a fluid-control component, using the correct OEM-spec valve matters for maintaining rated flow performance and avoiding unintended fluid migration within the pump system.
A non return valve — also called a check valve — allows fluid to flow in one direction only and automatically closes to block reverse flow when the pump stops or loses pressure. In a self-priming trash pump like the PT6Y series, the non return valve plays a key role in maintaining the pump's prime: it holds residual water in the volute so the pump can re-prime quickly rather than drawing air from a dry start. When the valve wears, warps, or fails to seat properly, the pump loses prime rapidly, discharge pressure drops, and re-priming between cycles becomes unreliable — symptoms that often get misdiagnosed as impeller or seal problems before the valve is inspected.
Part Details
| Part Number | 1000012555 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Non Return Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PUMP PT6Y-AU | PT6Y-AU | 5100076956 |
| PT6Y | PT6Y-SA | 5100070835 |
| PT6YT | PT6YT-IN | 5100077923 |
| PT6YT | PT6YT | 5100070966 |
| PT6Y | PT6Y | 5100064168, 5100069617 |
| PT6Y | PT6Y EPA T4 | 5100073464 |
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.
