Pre-Rinse Spray Valves
Pre-rinse spray valves—often used in commercial and institutional kitchens—are designed to remove food waste from dishes prior to dishwashing. By switching to a high-efficiency pre-rinse spray valve, a commercial or institutional kitchen can save more than $110 annually in energy and water costs.
Rinse with Power
About 1 million food service establishments in the United States use nearly 53 billion gallons of water each year to rinse dishes with pre-rinse spray valves. In fact, pre-rinse spray valves can account for nearly one-third of the water used in a typical commercial kitchen.
After having a label for efficient high-performing pre-rinse spray valves for several years, WaterSense has successfully transformed the marketplace for commercial kitchen pre-rinse spray valves. The U.S. Department of Energy (DOE) adopted the WaterSense efficiency threshold and performance test for the national energy standard covering these devices. Therefore, WaterSense sunset its specification for pre-rinse spray valves, effective January 1, 2019. The revised federal regulation requires every pre-rinse spray valve sold in the United States to meet or exceed the efficiency criteria established in the WaterSense specification. Closing out the specification will allow WaterSense to direct its resources to address other products and practices that will save water.
In 2013, EPA released the WaterSense Specification for Commercial Pre-Rinse Spray Valves, which allowed products to bear the WaterSense label if they met the WaterSense criteria for water efficiency. EPA’s specification also included spray force criteria and lifecycle testing to ensure performance in commercial kitchens. In 2016, DOE revised the federal energy conservation standards for commercial pre-rinse spray valves, codified in 10 CFR 431 Subpart O. The regulation, effective January 28, 2019, classifies pre-rinse spray valves into three product categories, differentiated by spray force, each with its own maximum allowable flow rate.
|Product Class by Spray Force||Maximum Flow Rate (gpm)|
|Product Class 1 (≤ 5.0 ozf)||1.00|
|Product Class 2 (> 5.0 ozf and ≤ 8.0 ozf)||1.20|
|Product Class 3 (> 8.0 ozf)||1.28|
Source: DOE, 2016
Replacing existing, non-efficient pre-rinse spray valves flowing at 1.6 gallons per minute (gpm) or greater with high efficiency, DOE-compliant models offers a significant opportunity for water and cost savings within commercial kitchens.
Replacing one old, inefficient pre-rinse spray valve with a high-efficiency, DOE-compliant model can save a typical commercial kitchen more than 7,000 gallons of water per year. That’s equivalent to the amount of water needed to wash nearly 4,800 racks of dishes. Because kitchens use hot water to rinse dishes, installing a high-efficiency pre-rinse spray valve can reduce a commercial kitchen’s annual natural gas use by more than 5,700 cubic feet per year. That’s enough energy to run its convection oven 12 hours a day for nearly three weeks.
A commercial kitchen that replaces one old, inefficient pre-rinse spray valve with a DOE-compliant model could save as much as $110 to $200 per year, and it could reduce water costs by $65 per year and energy costs by more than $40 per year (natural gas) or more than $130 per year (electricity). The facility could see payback on the investment in as little as five to eight months.
If all commercial food service establishments in the United States installed and used high-efficiency pre-rinse spray valves, we could save more than $215 million in water and energy costs across the country annually.
As of January 1, 2019, EPA has sunset the WaterSense Specification for Commercial Pre-Rinse Spray Valves; therefore, manufacturers can no longer earn the WaterSense label for these products. WaterSense thanks its program partners and stakeholders for their collaboration in developing and promoting the WaterSense specification.
Implementing rigorous water efficiency and performance criteria across this product category is a major accomplishment for WaterSense, its stakeholders, and water efficiency in commercial and institutional settings. The DOE rule change requiring all pre-rinse spray valves to meet or exceed WaterSense’s previously established criteria reflects the market transformation the program initiated in 2013.For more information on EPA’s decision to retire the specification, please review EPA’s Notice of Sunset for the WaterSense Specification for Commercial Pre-Rinse Spray Valves, released on October 18, 2018.
WaterSense will maintain the list of WaterSense labeled pre-rinse spray valves in the Product Search Tool until July 2019, after which EPA will retain an archived list for those interested in models that were certified to meet EPA’s efficiency and performance criteria.
To review the original WaterSense Specification for Commercial Pre-Rinse Spray Valves, or for more information about the pre-rinse spray valve specification development process, please visit the Specification for Commercial Pre-Rinse Spray Valves Background Materials page.