Important Note: This product REPLACES all H56XX Hansen pressure relief valvesBeginning July 8, 2019 H56xx series relief valves coming from Hansen will include both POP-EYE self-alarming technology and the new Anti Corrosion Technology (ACT) coating. They have discontinued the old style pressure relief valves. We have a limited amount of stock of the old style. Please call or email us if we can help.About the Pressure Relief Valve with POP-EYETM& ACT®Accurately set and sealed at the factoryStainless steel insert, piston and springPop-Eye indicator lightACT coated for corrosion protectionNeoprene o-ring helps seal valve from moisturePremium grade virgin Teflon(c) seat discCustom pressure settings available (please call us)About the new POP-EYEPOP-EYE is Hansen’s standardization of self-alarming relief valve technology. It provides positive indication (bright, flashing LED) when a relief valve lifts, helps eliminate subjectivity and personnel hazard in trying to identify the valve that lifted.Detects and indicates when a relief valve liftsLED Indication:Bright LED with 360° visibilityBattery operated, 7+ years lifeBlinks for 2+ weeks after a liftNot for retrofit on existing valvesNo setup, calibration, or wiring requiredNo False detectionValve is National Board CertifiedNo change in capacity ratingsNo piping changeDrop in replacement for existing valvesIntended for one-time useAbout Hansen’s Anti Corrosion Technology (ACT)Hansen’s ACT coating provides protection to prevent corrosion.Multi-layer protectionLower cost of maintenanceAvailable on ALL Hansen valvesStandard installation processResourcesHansen’s Popeye announcement (PDF)POP-EYE Test Video