The Wacker Neuson Check Valve is a genuine OEM component designed for HI750GM and HI900DGM series indirect-fired air heaters. As a direct OEM replacement, this part is built to the same standards as the original, ensuring proper fuel system operation and consistent heater performance in demanding jobsite conditions. Fitment covers multiple HI750GM and HI900DGM configurations, including surge brake and mobile variants rated to -40°. Always verify your machine's model number before ordering to confirm compatibility.
Key Features
- Genuine OEM Fuel System Integrity — Manufactured to exact flow and pressure specifications for Wacker Neuson indirect-fired heaters, ensuring the check valve seats and seals correctly under operating conditions.
- Direct Drop-In Replacement — Matches the original valve's port sizing and connection type for a straightforward installation in the fuel circuit of HI750GM and HI900DGM heaters.
- Broad HI-Series Fitment — Compatible across HI750GM, HI750GM HD Mobile, HI900DGM, and related indirect heater variants, including surge brake and -40° cold-weather configurations.
- Consistent Fuel Flow Control — A properly functioning check valve maintains one-directional fuel flow, preventing backflow that can cause hard starts, uneven combustion, or heater shutdown.
- Fuel System Safety — A worn or failed check valve can allow fuel to migrate back through the system, creating ignition inconsistencies and potential fuel handling hazards in cold-weather heating applications.
A check valve in an indirect-fired air heater controls the direction of fuel flow through the burner circuit, allowing fuel to pass in one direction only. This one-way function keeps fuel primed at the burner and prevents backflow that could disrupt combustion or cause the heater to fail to ignite. When the check valve wears out or loses its seal, operators may notice hard starting, erratic burner cycling, or complete loss of heat output — all of which point to a breakdown in fuel delivery control.
Part Details
| Part Number | 5000184027 |
|---|---|
| Old Part Number | 0184027 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Check Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI750 DGM HEATER-INDIRECT | HI750GM | 5000620859, 5000620930 |
| HI 750GM HD-Mobile Indirect Ai r Heater-Surge, -40 | HI750GMHD | 5000620969 |
| HI900 Heater-DGM,Srg,-40 | HI900DGM | 5200014221, 5200014222, 5200014165, 5200014166 |
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.
