CT Softwash LLC - Power Washing & Roof CleaningAddress: 919 Colonel Ledyard Hwy, Ledyard, CT 06339Phone: (860) 993-9770PSI and GPM: Never skip the indicating of PSI (pounds for each sq. inch) and GPM (gallon for every moment) values added on the tension washer and how they have an effect on the cleansing system. A particularly substantial PSI and G