Cla Val 81662K 7100 Air to Close Inline Control Valve, 1 1 2" FNPT B68416MS The enclosed impeller and precision Length:4 3 8" The enclosed impeller and precision volute design maximize hydraulic efficiency and flow performance Precision cast and machined in the USA Attribute Details Manufacturer Cla Val Manufacturer Part Number 81662K Model 7100 Valve Type Remote control inline diaphragm valve Operation Air to close Nominal Size 1 1 2 inch Connections 1 1 2 inch Female NPT x 1 1 2 inch Female NPT Body Material Cast iron Cv Factor 25 Approximate Weight 9 lb Applications Cla Val specifically identifies the Model 7100 for water trucks used in construction and mining dust suppression