Only use a swing check if you have larger solids than 25% based on your line size. The site below can help you with sizing your check valve to the specific application. Check out this site to solve your problem.
www.dft-valves.com
Contact Durabla Fluid Technology at 1-800-206-4013 to solve this problem. You will not solve your problem using a "poppet" style valve. Wrong design. Long term consistant shut capabilities can be achieved using Durabla in-line silent checks.
For check valves contact Durabla Fluid Technology at 1-800-206-4013. They specialize in all check valve applications. They may have a reference customer/OEM that can help you.
Contact Durabla Fluid Technology at 1-800-206-4013. They are the original in-line silent check valve designer & have been making the check valve you need for many years. They will size the valve to your flow requirements
You need to check the type of check valves that are being used in the system. Water hammer also results when the wrong check valves are installed such as, swing checks & double door designs, they close after the reverse flow pressure slams them to the seat. This is most evident when using swing...