Markal 86544 Temperature Indicator, 225°F 1CK01 115 230V AC 115 230V AC 25 in Material Red Brass Side A Gender Male Thread Configuration Threaded on Both Ends Side B Thread Type NPT Side B Gender Male Side A Thread Type NPT Side B Connection Type Threaded Maximum Operating Pressure 140 psi @ 450 Degrees F Minimum Operating Temperature 20 Degrees F Gravity Flow No Fitting Compatibility Class 150 Maximum Steam Pressure 561 psi @ 300 Degrees F Threading NPT Maximum Operating Temperature 400 Degrees F Pressure Level Low Pressure (100 299 psi) Side A Connection Type Threaded Resistance Properties Corrosion Resistant Schedule Schedule 40 Metal Pipe Construction Seamless Post Weld Heat Treating Temperature Indicator