The following navigation utilizes arrow, enter, escape, and space bar key commands. Left and right arrows move across top level links and expand / close menus in sub levels. Up and Down arrows will open main level menus and toggle through sub tier links. Enter and space open menus and escape closes them as well. Tab will move on to the next part of the site rather than go through menu items.

This 2 1/2 to 4 inch check assembly red silicone disc kit includes the parts necessary to repair or replace the first check of series 957, reduced pressure zone assembly, or reduced pressure detector assembly, series 957RPDA. This kit consists of all parts necessary to repair the second check assembly of the applicable valve. All parts are genuine and original to the valve.