The advantage of the Bonomi valve brand extends to check valves, as well, and here's why you can't afford to overlook them. While a check valve appears simple on paper, real-world performance depends heavily on stability under varying fluid velocities. A standard spring-loaded check valve with a 1/2 psi cracking pressure opens easily under nominal flow, but low flow velocities can cause disk chatter and premature seat failure if the valve design lacks proper stem guidance. Any check valve designed to open at 1/2psi (standard) may work great under a normal water supply rate, but may falter under low flow conditions. Bonomi, in their pioneering tradition, have taken such factors into account when designing and manufacturing check valves.
The Difference is in Design
At first glance, Bonomi check valves look like any other, but there are significant differences to consider--particularly inside. A major point you should take note of is the snugness of a Bonomi check valve's disc assembly. Bonomi knows that the stability of the disc is crucial to performance and longevity; inferior designs often fail under low flow conditions--either intentional or accidental, depending on application--due to a phenomenon known as "wobbling."
Valve chatter occurs under low-velocity or turbulent flow conditions where dynamic line forces fluctuate. Bonomi mitigates this by precision-machining tight tolerances between the stem and stem guide to prevent disc tilt and side-loading. Additionally, Bonomi utilizes high-grade engineering thermoplastics like Polyetherimide (PEI / Ultem®) and NBR/PTFE soft seats for exceptional wear resistance and bubble-tight shutoff. Another advantage Bonomi enjoys over the competition is superior disc material: Polyetherimide--a thermoplastic--is extremely abrasive-resistant.
Bonomi Check Valves
Consider the following examples of Bonomi check valves:
- Bonomi Type 100012 LF: Bonomi Type 100012 LF: An inline lead-free brass check valve (1/4" to 2") suitable for vertical or horizontal piping. Rated for 400 WOG (non-shock cold working pressure) and maximum operating temperatures up to 210°F. Features FNPT connections and full compliance with Safe Drinking Water Act (NSF/ANSI 61 & 372) standards
- Bonomi Type 100612 LF: Press system connections for quick piping assembly. Lead Free. Patented disc guide. Flow profile is designed to prevent head loss; spring loaded/fast seating; high capacity. Perfect for either low or high pressure flows. Exceptional corrosion resistance. Available in sizes 1/2" to 2" at 200WOG.
- Bonomi Type 100712 LF: Bonomi Type 100712 LF: Compact lead-free forged brass check valve featuring an NBR seat and stainless steel spring. Rated for 400 WOG pressure applications at temperatures up to 180°F, delivering high flow coefficients ($C_v$) while preventing backflow and water hammer.
- Bonomi S800: Bonomi Series S800: Investment-cast 316 Stainless Steel inline check valve rated for 800 WOG / 125 WSP saturated steam. Features dual stem guidance, a 316 SS disc, and PTFE seating for tight shutoff across a temperature range of -20°F to 400°F. Highly corrosion-resistant- perfect for use with a wide range of chemicals.
All Bonomi check valves utilize a standard cracking pressure of 1/2psi. But, unlike the competition, Bonomi check valves are compatible with, and perform superbly in, high or low flow conditions, due to elastomeric seating, interior dimensions, and a superior design which allows them to maintain optimal cracking pressure in any flow rate.
Bonomi check valves edge out the competition by being versatile, making each valve the preferred choice for a variety of applications and flow rates. And Bonomi's lead-free forged brass alloys are engineered to resist dezincification (DZR) and stress-corrosion cracking, ensuring long-term structural integrity in harsh water conditions.
Conclusion
If you're in the market for a Bonomi check valve, you've come to the right place. Contact us today! And if you found this introductory article about Bonomi check valves informative and would like to know more about the Bonomi brand, please feel free to browse the following blogs:
