Stop damage to your RV water hose, pump or internal lines from inconsistent water pressure in campgrounds. Reduce water pressure to a safe, consistent 40-50 PSI of operational pressure. Protects equipment and prevents hose failure, helping to prolong equipment life.(3/4" M x F garden hose threads) patented. Plastic .

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov