Features:

·   High Btu capacity rating, Silicone seat

·   Corrosion Resistant Construction, Diaphragm Isolated Spring Chamber

·   Extremely High Capacity, Directive 97/23/EC (PED) Compliant Option

·   Fabric reinforced molded diaphragm isolates spring from water at all times

·   Bronze body and spring cage

·   Protects against excessive water pressure due to failure of controls to regulate Btu input

·   ASME Section IV, 15-160 psig Set Pressures @ 250°F max

Materials

·   Body/Cap: ASTM B584 Bronze

·   Spring: Alloy Steel, plated, Seat: Silicone