The Wacker Neuson Expansion Tank is a genuine OEM component designed for the S3000 series hydronic surface heaters, including the S3000 Hydronic Surface Heater with 3000 ft hose and the S3000 Hydronic Surface Heater with Generator and 3000 ft hose. Sourced directly from Wacker Neuson, this expansion tank is manufactured to the exact specifications required by the HSH line, ensuring a direct, trouble-free installation. Confirm your model number against the S3000 fitment data before ordering to ensure compatibility with your specific configuration.
Key Features
- Genuine OEM Fluid System Integrity — Manufactured to Wacker Neuson's original pressure and volume tolerances, maintaining correct system pressure balance in the hydronic heating circuit.
- Direct Bolt-In Replacement — Engineered to match the original mounting points and hose connections on S3000 series units, allowing straightforward swap-out without custom fitting or modification.
- S3000 Series Compatibility — Verified fitment for the S3000 Hydronic Surface Heater (3000 ft hose) and S3000 Hydronic Surface Heater with Generator (3000 ft hose) configurations.
- Consistent Heat Output Protection — A properly functioning expansion tank absorbs fluid volume changes as the system heats and cools, protecting hoses, fittings, and the pump from pressure spikes that can cause premature failure.
- Pressure System Safety — In a closed hydronic loop, a failed or degraded expansion tank can cause dangerous pressure buildup. Replacing with a genuine OEM unit restores the system's designed pressure relief capacity and safe operating range.
The expansion tank in a hydronic surface heating system serves as a pressure buffer for the closed-loop fluid circuit. As the heating fluid warms up and expands, the tank absorbs the excess volume, preventing pressure from building to levels that could damage hoses, seals, or the circulation pump. When the expansion tank fails — whether through a ruptured bladder, a leak, or loss of pre-charge pressure — the system can experience erratic pressure fluctuations, reduced heating efficiency, or component damage throughout the loop. Keeping this component in good working order is essential to the safe and effective operation of the S3000 hydronic surface heater.
Part Details
| Part Number | 5000169700 |
|---|---|
| Old Part Number | 0169700 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Expansion Tank |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydronic Surface Heater w/ Gen erator, 3000 ft hose | S3000 | 5000620218, 5000620182 |
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.
