A strainer and checkstop is an integral part of the prison valve assembly and provides a means of shutting off the water if the valve needs servicing. A check valve in the checkstop eliminates cross flow of hot or cold water into the opposite supply line. Fine mesh stainless steel strainers keep normal line debris from interfering with the mechanical components of the valves.
VMS stocks complete strainer and checkstop assemblies and the parts to repair them such as; bonnets, pistons, stems, strainers, springs and other repair parts from Acorn, Bradley, I-CON, Kohler, Metcraft and Willoughby.