Cla Val 81663H 7100 Air to Close Inline Control Valve, 2" FNPT Cv 25 Its cast iron case and impeller 33645000 Its cast iron case and impeller Its angled bolt pad design grips the pipe grooves to restrict axial and angular movement Feature Details Air to Close Operation Remote pneumatic actuation for water flow control Full Opening Opens to full line size when control air is released Diaphragm Closure Provides positive Attribute Details Manufacturer Cla Val Manufacturer Part Number 81663H Model 7100 Valve Type Inline diaphragm control valve Actuation Air to close Nominal Size 2 inch Connections 2 inch Female NPT x 2 inch Female NPT Pressure Class Class 125 Maximum Working Pressure 175 PSI Maximum Water Temperature 125°F Applications