Check valves are an ideal solution along any Tri Clamp fitted system to mitigate backflow. Each Tri Clamp check valve is 3A certified to meet high sanitary standards, has a 1/2 PSI break pressure, and comes with an EPDM seal. Other Tri Clamp sizes are available per special order.Please understand our quantity packs share from a communal inventory. A buyout of one pack type will consume inventory of other packs. Due to limitations, our system has a delay in updating other packs' stock quantities. Thank you graciously for understanding. Hydrators / Hoppers / Spargers. Glacier Tanks - A family owned business.. Our Mission: We're a growing company with big ambitions! Our affordable & quality-inspected products are a powerful combination that has helped us double in size by providing the best value in stainless steel equipment. Our 10-year mission is to innovate and improve the quality of life for everyone we work with: our employees, our customers, and our resident 4-legged family members. The item "Check Valve Tri Clamp 1.5 inch Stainless Steel SS316 (2 Pack)" is in sale since Friday, April 17, 2020. This item is in the category "Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Fittings & Adapters\Pipe & Hose Fittings\Sanitary Fittings". The seller is "glaciertanks" and is located in Vancouver, Washington. This item can be shipped to United States.