The Wacker Neuson Relief Valve is a genuine OEM component designed for the E 1250P Hydronic Heater in both Premium Diesel and Premium LP/NG configurations. As a direct OEM part, it is manufactured to the exact specification required by these hydronic surface heating systems, ensuring a correct, code-compliant installation every time. This relief valve is the right choice when servicing E 1250P units on cold-weather concrete curing, ground thawing, or enclosed-space heating applications where system pressure integrity is critical.
Key Features
- Genuine OEM Pressure Rating — Manufactured to the exact pressure threshold specified for the E 1250P hydronic circuit, so the valve opens and closes at precisely the right point — not too early, not too late.
- Dual-Fuel Compatibility — A single OEM part number covers both the Diesel and LP/NG variants of the E 1250P Premium Hydronic Heater, simplifying parts procurement for mixed fleets.
- Direct Drop-In Replacement — Threaded to factory dimensions, this valve seats into the existing port on the E 1250P without re-threading or adaptation, restoring the system to as-built condition.
- Protects the Hydronic Circuit — A correctly functioning relief valve prevents over-pressurization of the fluid loop, protecting hoses, fittings, and the heat exchanger from damage caused by pressure spikes.
- Safety-Critical Pressure Control — On a pressurized hydronic heating system, a failed or stuck relief valve can result in dangerous over-pressure conditions. Using the correct OEM part ensures this safety device performs as engineered.
A relief valve is a safety and pressure-management device within the hydronic fluid loop of the heater. It monitors system pressure continuously and opens automatically if that pressure exceeds a safe operating threshold, venting fluid to relieve the spike before it can damage downstream components. When the valve sticks closed, the system risks over-pressurization, which can rupture hoses or damage the heat exchanger. When it sticks open or fails to seal, the system loses pressure and can no longer circulate heated fluid effectively, reducing heating output and potentially causing the unit to fault or shut down.
Part Details
| Part Number | 5100017814 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Relief Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
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.
