Equation 4-17. Water Savings From Pre-Rinse Spray Valve Replacement (gallons
= Current Water Use of Pre-Rinse Spray Valve –Water Use of Pre-Rinse
Spray Valve After Replacement
Current Water Use of Pre-Rinse Spray Valve (gallons per year)
Water Use of Pre-Rinse Spray Valve After Replacement (gallons per year)
To calculate the simple payback from the water savings associated with replacing
an existing pre-rinse spray valve, consider the equipment cost of the replacement
pre-rinse spray valve, the water savings as calculated using Equation 4-17, and the
facility-specific cost of water and wastewater. Pre-rinse spray valves typically cost less
By replacing a pre-rinse spray valve with a more efficient model, facilities can also
save a significant amount of energy due to the reduction in hot water use. This
energy savings will further reduce the payback period and increase replacement
Alliance for Water Efficiency. Commercial Food Service Introduction.
DOE, Energy Efficiency & Renewable Energy, Federal Energy Management Program.
Covered Product Category: Pre-Rinse Spray Valves.
EPA’s WaterSense program. Pre-Rinse Spray Valves.
Food Service Technology Center. Commercial Kitchen Equipment—Pre-Rinse Spray
Pre-Rinse Spray Valves