Wacker Neuson 5100026797 Pressure Regulator

The Wacker Neuson Pressure Regulator is a genuine OEM component designed for the HI 400HD G Indirect Air Heater. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original unit installed at the factory — no guesswork on fit or calibration. It is a direct replacement for the HI 400HD G series, ensuring the heater's fuel or fluid delivery system operates within the correct pressure range. Keep your heater running at peak output with a part built to the same standard as the one it replaces.

Key Features

• Genuine OEM Pressure Specification: — Calibrated to the precise operating pressure required by the HI 400HD G, ensuring consistent fuel or fluid delivery without over- or under-pressurization.
• Direct Drop-In Replacement: — Engineered to the original mounting configuration and connection points of the HI 400HD G, so installation is straightforward with no adaptation needed.
• Confirmed Fitment — HI 400HD G: — Verified for the Wacker Neuson HI 400HD G Indirect Air Heater, eliminating compatibility uncertainty before you order.
• Sustained Heating Performance: — A properly functioning pressure regulator keeps combustion stable and heat output consistent; a failed or drifting regulator leads to uneven heating, flame-outs, or excessive fuel consumption.
• Fuel System Safety: — Pressure regulation is a critical safety function in indirect air heaters — using a genuine OEM part ensures the system operates within its designed pressure envelope, reducing the risk of fuel system faults.

A pressure regulator controls and maintains the fuel or fluid supply pressure delivered to the heater's combustion system, ensuring it stays within the range the burner assembly is designed to handle. When pressure is too high or too low, the heater may fail to ignite, run inefficiently, or shut down on a safety fault. Over time, regulators can wear internally or lose the ability to hold a stable set point, making timely replacement important for reliable, safe heater operation.

Part Details

Compatibility & Fitment

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.