The Rainstopper Difference
No minimum orders, custom solutions, and three generations of water industry expertise.
At Rainstopper, we build manhole inserts that solve problems in the field, not just on paper. What started as an inflow protection solution has become a product line municipalities rely on for flood mitigation, sewer odor management, construction debris control, and grease trap backup protection.
Proven, patented, and American-made, our inserts protect infrastructure, reduce treatment costs, and deliver dependable performance you can trust.
Our Guarantee
We guarantee an immediate return on investment (ROI) upon installation of our manhole inserts with performance and savings you can measure from day one.
Why Choose Rainstopper?
Every insert reflects the same values that have guided us since 1969:
integrity
innovation
& reliability
you can count on.
- Proven Legacy – A third-generation, family-owned company with over 50 years of hands-on experience in the water industry.
- Made in the USA – Every insert is designed, built, and assembled in America with uncompromising quality.
- Field-Proven Reliability – Decades of real-world results backed by industry-leading warranties.
- Patented Performance – Features like Tetherlok, relief valves, and the 50-Year Gasket set the benchmark for reliability.
- Flexible Solutions – No minimum orders. Whether standard or custom, every insert fits your project needs.
- Warranty You Can Trust – 15-year warranty on stainless steel, 1-year on HDPE, plus the unmatched 50-Year Gasket model.
- BABA Compliant – Fully aligned with Build America, Buy America standards for federally funded infrastructure work.
Manhole Inserts
Explore our patented stainless steel and HDPE inserts. Proven inflow protection built to last and engineered for long-term performance, safety, and reliability.
Standard Reliability
Flush-fit design, proven durability, maintenance-free performance.
Premium Extended Life
Advanced gasket technology for maximum longevity and peace of mind.
Cost-Effective Solution
Lightweight, economical, ideal for budget-conscious projects.
Custom Fabrication: Built In-House
Rainstopper combines more than 50 years of hands-on experience with an in-house fabrication shop and multiple U.S. patents. When a standard part doesn’t fit the problem, we don’t wait on someone else to build it. We do — whether that’s modifying an insert for an off-spec manhole, welding a custom handle, or fabricating a replacement part that’s hard to source elsewhere.
Our size gives us an advantage: we can move fast, customize freely, and bring solutions to life without layers of approval. When a unique challenge arises, we don’t just accommodate it. We excel at it.
Since 1969
Rainstopper has stood for quality, honesty, and hands-on service. As a third-generation, family-owned business, we bring decades of real-world experience to every project. When you work with us, you get direct access to the people who design, build, and stand behind every insert we make.
What Sets Us Apart
- Generational Expertise – A family legacy of hands-on water and wastewater knowledge passed through three generations.
- Integrity in Every Detail – Trusted relationships built on reliability, honesty, and follow-through.
- Proven Innovation – Patented gaskets, valves, and theft-prevention systems that deliver lasting results.
- Flexible and Responsive – No minimum orders, and a willingness to solve unique challenges.
- American-Made – Manufactured in the USA with pride and purpose since 1969.
Ready to Get Started?
Whether you’re ready to order or need help configuring the right solution, we make it easy to move forward.
Industry Leadership & Partnerships
Rainstopper is proud to be an active member of the water and wastewater industry’s most trusted organizations. Our commitment to professional development, industry standards, and collaborative problem-solving keeps us at the forefront of inflow protection innovation.
These partnerships ensure we stay current with industry best practices, regulatory requirements, and emerging technologies so you benefit from solutions that meet today’s standards and tomorrow’s challenges.
