Watts LFF116 150 B 20 200 LS 1 1 2 Part of the LFF116 Series inlet protection finder 80 Maximum Working Pressure PSI 200 80 Maximum Working Pressure PSI 200 Minimum Temperature Celsius 0 Specifications Body Material Lead Free Copper Silicon Alloy Body Pattern Straight Brand Watts Class Rating Does Not Apply To Product EAN 098268653182 Inlet Connection Size 3 4 IN Inlet Connection Size Metric 19 MM Inlet Connection Type Female Threaded Inlet Thread Type FPT Lead Free YES Maximum Operating Temperature Celsius 82 it acts as backpressure control valve and throttle toward closed when upstream pressure falls below the adjustable setpoint