Watts LFM116 GRV B 20 200 PI 6 Part of the LFM116 Series silt fence selector Specifications Actuation No Assembled Dry Specifications Actuation No Assembled Dry Yes Balance Stop Plate No Ball Material 316 Stainless Steel Body Finish Brass Body Material Lead Free Copper Silicon Alloy Brass Brand Watts Class Rating Does Not Apply To Product Control Type Lever Handle CV Rating Does Not Apply To Product EAN 098268599039 Electrical Rating Does Not Apply To Product Inlet Connection Size 3 4 IN Inlet Connection Size Metric 19 MM Inlet Connection Type Press Inlet Thread Type Does Not Apply To Product Lead Free YES Maximum Temperature Fahrenheit 250 Minimum Temperature Celsius 18 UPC 098268328745 and position indicator on top ports it acts as backpressure control valve