The Female Coupling Will Only Connect to a Male 1 1/2 inch NPSH, NPT or NPSMThe Female Coupling Will Connect to a Pump with 1 1/2 inch Male NPT ThreadsThe Male Coupling Will Only Connect to a Female 1 1/2 inch NPT or NPSHThe Male Coupling Will Connect to most 1 1/2 inch strainersWorking Pressure - 30 psiWorking Temperature - 140 degrees F to -5 degrees FVacuum Rating - 29 HgHose Color - White and ClearDurable PVC hard suction hose. Clear side wall allows visual check of water flow. External helix ribbing with smooth interior surface for maximum flow while drafting. The anodized aluminum hose couplings are expansion ring and they are not field repairable.All hoses are vacuum tested before shipment.May be used on floating strainers or below the ground holding tanks.Warning - Not intended for hydrant pressure or head pressure from an above ground holding tanksWARNING: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Do not use in connection with drinking water. Wash hands after handling.