Mercer Valve 9100 Model 20 Series Safety Relief Valves are the state of the art in soft seat, high flow rate, pressure relieving devices. This unique design was developed especially for the emerging CNG and other high pressure applications. The 9100 Mod 20 is available in a “C” and “D” orifice and is suited for pressures from 3000 PSI to 8700 PSI.

The 9100 Mod 20 has a field proven soft seat coupled with a new, unique guided disk type PATENTED DESIGN. Expected seat life with Auto Seat Technology® is hundreds of “pops”. Full length guiding of “low rate” set pressure springs insures accurate, repeatable relief action.