When municipalities and industrial plants need reliable backflow prevention that can withstand decades of service in harsh environments, they turn to specialized manufacturers with deep elastomer expertise. Elasto-Valve Rubber Products Inc. (EVR) , headquartered in Sudbury, Ontario, has been providing exactly that kind of engineering-led solution since 1984 . This post explores EVR’s rich Canadian heritage, their comprehensive line of Duckbill Check Valves, and how their products protect critical infrastructure around the world.
The EVR Story: Four Decades of Canadian Innovation
Founded in 1984 in Sudbury, Ontario—the heart of Canada’s largest concentration of mining and pulp and paper activity—EVR was strategically positioned to serve the most demanding industrial applications from day one . As a subsidiary of Devjo Industries, Inc., the company has grown into a trusted manufacturer of hand-built, custom, and standardized elastomeric piping products .
EVR’s core strength lies in its significant engineering expertise with respect to elastomers and their application in various environments . Unlike companies that simply catalog standard products, EVR’s engineering team strives to understand every aspect of a client’s application: the media that will flow through the product, operating pressures, temperatures, mechanical stresses, flow rates, required ranges of movement, and vibration dampening needs . This collaborative, consultative approach ensures that each valve is ideally suited for its intended purpose.
The company is ISO 9001:2015 registered, reflecting its commitment to consistent quality and continuous improvement . With annual sales in the $5-9.9 million range and a dedicated team of 10-49 employees, EVR combines the agility of a specialized manufacturer with the reliability of an established industry player .
The EVR Duckbill Valve Advantage
EVR’s duckbill check valves are fully passive devices containing no hinges, springs, or mechanical components—eliminating the failure points associated with traditional flap gate and check valve designs . This simplicity translates directly into reduced maintenance requirements and lower long-term operating costs for municipalities and industrial operators managing complex fluid conveyance systems .
Gary Waldick, Vice President of EVR Products, notes the growing demand for these solutions: “We are seeing increased interest from engineers and facility managers who want dependable flow control without the maintenance burden that comes with mechanical alternatives. Duckbill valves offer that reliability in a straightforward, proven design” .
The flexible rubber construction of each valve adapts to varying flow conditions and permits passage of debris that would obstruct rigid mechanical check valves . When forward pressure is applied, the “duckbill” opens to allow flow. When flow reverses, the bill instantly collapses, creating a tight seal that prevents backflow .
Complete Duckbill Valve Model Series
EVR offers a comprehensive line of duckbill check valves engineered to address different installation requirements :
Duckbill Valve Key Applications Across Industries
EVR duckbill valves serve essential functions across a wide spectrum of industries and applications :
Municipal Wastewater and Stormwater
Backflow prevention remains a critical concern in municipal infrastructure. Reverse flow events can introduce contamination into clean water systems, damage pumping equipment, and create public health hazards . EVR duckbill valves, available in sizes up to DN2000, serve dual functions as both backflow prevention devices and odor control barriers, sealing against reverse airflow that can carry unpleasant gases back through piping networks into populated areas .
Flood Control and Watershed Management
Engineers controlling the Indian and McGregor Creek Watershed near Chatham, Ontario, attached EVR’s duckbill check valves to drain pipes to divert runoff water and prevent flooding of nearby residents’ homes . This real-world application demonstrates the valves’ effectiveness in protecting communities from water damage.
Mining and Industrial Processing
EVR serves numerous industries including mining, power generation, pulp and paper, and petrochemical processing . Their valves handle abrasive slurries, corrosive chemicals, and demanding process conditions with reliable, maintenance-free operation.
Potable Water Security
For applications requiring drinking water contact, EVR offers elastomer compounds suitable for potable water systems, ensuring both safety and reliable performance .
Food and Pharmaceutical Processing
EVR’s elastomeric products serve food and drug processing industries where hygiene, reliability, and material compatibility are paramount .
Contact Information and DuckBill Valve Global Distribution
EVR Products manufactures its full line of rubber duckbill check valves for distribution to engineering firms, municipalities, and industrial operators worldwide . The company encourages direct contact for technical discussions and application assistance.
Primary Contact Information:
- Phone: 800-461-6331 (toll-free) or 705-523-2026
- Email: [email protected]
- Address: 1691 Pioneer Road, Sudbury, ON, Canada P3G 1B2
- Website: www.evrproducts.com
Key Personnel:
- Gary Waldick, Vice President & General Manager
- Jim Allman, Engineering Manager
- Cal Hayes, V.P., Sales & Marketing
- Steve Sheppard, Marketing Manager
- Peter Sucharda, Sales & Marketing Engineer
The company’s website includes functionality for customers to access distributors around the world, submit Requests for Quotes, and browse products according to categories such as pinch valves, rubber connectors, and pressure sensors .
Recent News and Industry Recognition
March 2026: Growing Demand for Duckbill Valve Technology
EVR is drawing attention to the expanding role of duckbill valve technology in backflow prevention across wastewater, stormwater, and industrial piping systems . The company reports increasing interest from engineers and facility managers who recognize the long-term cost savings of maintenance-free passive solutions.
Continued Engineering Innovation
EVR’s commitment to innovation is demonstrated by its development of specialized products like the I-Beam Check Valve, a patented design that provides relatively low headloss and high inversion resistance for use in a wide variety of applications . This valve features a unique I-beam cross-sectional shape formed by multiple pairs of resilient lips, offering enhanced performance characteristics.
ISO 9001:2015 Certification
EVR maintains ISO 9001:2015 registration, ensuring that whether building expansion joints, duckbill check valves, pinch valves, or other piping connectors from 12 mm (1/2″) to 2700 mm (108″) in diameter, the team follows the same rigorous procedures to build quality into every product .
Customer-Driven Service
When mission-critical infrastructure is down, EVR has the expertise and resources to respond to unique customer needs. In 2016, the company received an urgent request to build and ship a large diameter rubber expansion joint. The team came together and worked around the clock, loading it onto an airplane just 29 hours after receiving the order .
Conclusion
For over four decades, Elasto-Valve Rubber Products has combined Canadian manufacturing excellence with deep elastomer engineering expertise to solve the world’s most demanding flow control challenges. Their comprehensive line of duckbill check valves—from the versatile CPO Slip-On series to specialized in-line configurations—provides reliable, maintenance-free backflow prevention for municipalities and industries worldwide.
When you specify an EVR duckbill valve, you’re choosing more than a component; you’re choosing a partner committed to understanding your application and delivering the best possible solution. Whether you’re protecting a watershed from flooding, managing mine tailings, or ensuring potable water security, EVR has the engineering expertise and product quality to meet your needs.
For more information about EVR’s duckbill valve offerings or to discuss your specific application requirements, contact their Sudbury, Ontario headquarters at 800-461-6331 or visit www.evrproducts.com.