The Wacker Neuson Check Valve Disc Seal 6in is a genuine OEM component designed for the APT6S and APT6T series submersible pumps. As a direct OEM part, is manufactured to the exact material and dimensional standards required to maintain proper valve function in these pumps — including standard, surge brake, electric brake, and cold weather variants. Verified fitment covers the APT6S Pump with Skid, APT6T Pump with Surge Brake, APT6T Pump with Electric Brake, and their cold weather counterparts, giving contractors confidence they're ordering the right seal the first time.
Key Features
- OEM Seal Material Grade — Genuine Wacker Neuson construction ensures the disc seal delivers the correct compression and chemical resistance needed to hold a positive seal against pump-grade fluids without deforming under pressure cycles.
- Drop-In Check Valve Replacement — Engineered to seat directly into the 6-inch check valve assembly with no trimming or shimming, maintaining correct valve geometry on reinstallation.
- Broad APT6 Series Coverage — Fits APT6S and APT6T pump models across standard, surge brake, electric brake, and cold weather configurations, making it a single-part solution for fleets running multiple APT6 variants.
- Sustained Flow Performance — A properly seated check valve disc seal prevents backflow between pump cycles, preserving discharge efficiency and protecting the pump from pressure shock that accelerates wear on internal components.
- Backflow Containment Integrity — In dewatering and fluid transfer applications, a failed check valve seal allows uncontrolled backflow that can compromise site drainage progress and place undue stress on the pump drive — making seal condition a critical service check point.
The check valve disc seal is the sealing element inside the pump's check valve — a one-way flow control that allows fluid to pass in a single direction while blocking reverse flow when the pump cycles or stops. When the disc seal is intact and properly seated, it maintains discharge pressure and prevents pumped fluid from draining back through the pump body. As the seal wears, cracks, or loses its seating contact, backflow increases, discharge performance drops, and the pump works harder to maintain output — accelerating wear on surrounding components and reducing overall pump efficiency.
Part Details
| Part Number | 5100041317 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Check Valve Disc Seal 6in |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6S Pump w/Skid | APT6S | 5200018982 |
| APT6T Pump, Surge Brake | APT6T | 5200019646, 5200019647 |
| APT6T Pump, Surge Brake, Cold Weather | APT6T CW | 5200019794, 5200019795 |
| APT6S Pump w/Skid, Cold Weather | APT6S CW | 5200019799 |
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.
