ENARDO Pressure Vacuum Relief Valves – Advanced Materials and Construction

Pallet and Seat

ENARDO’s Saber pallet guide system provides the only dual guided (top and bottom) pallet in the industry. This provides for smoother valve stroke, less flutter and valve wear. In addition the valve seat is a fully field replaceable pallet and seat assembly which eliminates the need to send the valve out for repair or replacement. By allowing field replacement the valve can be maintained by in house personnel allowing the customer to remain in total control. Replacement of the seat with a certified ENARDO replacement guarantees the valve is brought back to like new factory standard. All this can be done without need for special tools or complex procedures.

Material selection for the operational components of the valve is crucial for the valve's performance and reliability. Many applications subject the valve to stored or processed vapors which can be chemically hostile, corrosive and sticky, as well as to harsh environmental conditions such as extreme cold and heat. These conditions are the prime causes of deterioration, pitting, sticking and freezing, which cause leakage and possible valve failure. When used for the valve seat and pallet, PPS material provides greater resistance to these destructive factors when compared with conventional metal materials such as aluminum, ductile iron, carbon steel and stainless steel. (For more information on PPS's corrosion resistance characteristics compared to 316 Stainless Steel, ask for the ENARDO Chemical Resistance Comparison of PPS to 316 Stainless Steel.)