Febco FRK 850 870V CK4 8 10 Part of the RK 850 870V Series ZC100F 3NH This 4 inch lead free This 4 inch lead free two piece Specifications Air Valve No Brand Watts Buy American Act Compliant NO Case Finish Does Not Apply To Product Case Material Valox Dial Size Does Not Apply To Product EAN 098268590845 Entry Style Back Inlet Connection Size 3 4 IN Inlet Connection Type Male Threaded Lead Free YES Manual Shutoff No Maximum Operating Temperature Fahrenheit 300 Minimum Temperature Fahrenheit 40 Part Number 0121728 Pressure Scale Does Not Apply To Product Sensing Element No Sensing Fluid Yes Series LFTA Temperature Range 40 to 300 degrees F Thermostat Probe Length 3 1 2 IN Thermowell Yes VR Retaining Valve No Window Material Glass Specification Sheet LFTA All parts are made of high quality materials Features Factory replacement parts