Function: Used as a control and regulating valve for life service end-of-line application on high-pressure sprinkler, standpipe and combined systems. The valve is used to regulate inlet pressure to 400 PSI/27.5bars.
Regularly Furnished: Cast brass valve with inside screw rising stem. Internal parts of brass and stainless steel. Red aluminum handwheel. Model 4021 ... 2½"/6.4cm Female NPT inlet and outlet 4023 ... 2½"/6.4cm Female NPT inlet X male hose thread outlet