| The Haws 6394 .4 GPM Pressure Compensation Flow Control is a flow control engineered to provide a proper drinking stream height at pressures varying from 30 to 100 PSI. Lead-free Tellurium copper coupling with .4 GPM flow rate. Includes: cone, friction washers and slip joint nut. Dimensions: 9/16" OD inlet x 1/2" NPT(F) outlet. Product Details | Manufacturer | Haws | | Part # | 6394 | | Description | .4 GPM Pressure Compensation Flow Control | |