Description
Product Overview
The Ophjerg Vacuum Breaker is a precision‑engineered component designed to replace the original vacuum breaker in Dometic SeaLand toilet systems. Constructed from high‑grade stainless steel, the unit offers superior corrosion resistance and long‑term durability compared with standard plastic alternatives. It features a 1.25‑inch threaded inlet and a matching 1.25‑inch NPT outlet, providing a secure, leak‑proof seal that meets OEM specifications. Weighing just 3.52 ounces and packaged in a compact 4.84 × 2.91 × 2.44 inch box, this kit includes everything needed for a straightforward swap.
Usage

Designed for recreational vehicles, marine applications, and off‑grid cabins, the vacuum breaker prevents wastewater backflow that can cause foul odors and potential contamination. Whether you are upgrading an older Dometic model or replacing a failed component, the Ophjerg kit fits a wide range of Dometic toilet part numbers, including 110, 111, 130, 131, 147, 148, 149, 210, 248, 506+, 508+, 509+, 510+, 511+, 547+, 548+, 557+, 558+, 606, 647, 648, 706, 709, 711, 712, 748, 749, 806, 808, 847, 848, 910, 911, 913, 1006, and 1008. Ideal for full‑time RVers, weekend adventurers, and boat owners who demand reliable sanitation on the move.
Why Choose Us
Ophjerg’s upgraded design incorporates thicker walls and a tighter connection to the toilet body, reducing the risk of cracks and wear over time. Each unit undergoes rigorous quality testing to ensure it meets or exceeds OEM standards. Our commitment to customer satisfaction includes responsive pre‑sale support and a clear warranty policy, giving you confidence in every purchase.
Key Features
- Stainless‑steel construction for maximum corrosion resistance
- 1.25″ threaded inlet and NPT outlet for a secure, leak‑free fit
- Compatible with over 30 Dometic toilet models and part numbers
- Easy DIY installation – replace the old unit in minutes
- Upgraded wall thickness for enhanced durability and longevity
FAQ
Will this vacuum breaker fit my Dometic SeaLand toilet?
Yes. The Ophjerg unit is engineered to match the OEM specifications for Dometic SeaLand models and is compatible with a broad list of part numbers, ensuring a direct replacement without modifications.
Do I need any tools to install the vacuum breaker?
Installation requires only basic hand tools such as a wrench or pliers. Remove the old breaker, thread the new unit into place, and tighten the connections—no special equipment is needed.
Is the stainless‑steel finish safe for potable water?
The stainless‑steel material used complies with marine‑grade standards and is safe for the waste‑water side of the system. It does not come into contact with drinking water.
What if I encounter a leak after installation?
Check that the threaded connections are fully seated and tightened to the recommended torque. If a leak persists, contact our support team for troubleshooting assistance.
Does this product include a warranty?
While the listing states no formal warranty, Ophjerg stands behind the quality of its products and offers responsive after‑sales support to resolve any issues you may encounter.








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