Choose a commercial pre-rinse valve by its tested spray force, rated flow and compatibility with your existing assembly. Federal limits differ by spray-force class for valves manufactured from January 28, 2019. EPA retired this product’s WaterSense specification, so compare current product data and cleaning performance instead of expecting a new WaterSense label.
Which federal flow limit applies?
Pick a valve that removes food residue efficiently at the dish station and fits the existing assembly. The lowest gallons-per-minute number is only part of that choice. Spray force and the time staff spend rinsing determine whether a lower-flow model actually works well in your kitchen.
The Department of Energy defines a commercial pre-rinse spray valve as a handheld, release-to-close device suitable for removing food residue before commercial dishwashing or warewashing. A household pull-down faucet belongs to a different product category.
For covered valves manufactured on or after January 28, 2019, 10 CFR 431.266 sets these maximum flow rates:
| Product class | Tested spray force | Maximum flow |
|---|---|---|
| Class 1 | 5.0 ounce-force or less | 1.00 gallon per minute |
| Class 2 | More than 5.0 through 8.0 ounce-force | 1.20 gallons per minute |
| Class 3 | More than 8.0 ounce-force | 1.28 gallons per minute |
Ounce-force describes the force of the spray, not the supply pressure in the building. DOE's test method measures both flow and spray force. Comparing models within their documented class is more useful than treating one flow limit as the rule for every valve.
The rule has a different manufacturing-date provision for older valves. The current table does not establish that every existing older valve must immediately be removed.
Should I look for a WaterSense label?
EPA retired its commercial pre-rinse specification on January 1, 2019, after the federal standards incorporated its efficiency and performance approach. Manufacturers can no longer earn a new WaterSense label for these products.
An archived listing can explain an older model's certification. It is not a substitute for current model specifications. Ask the supplier for the exact model, rated flow, spray-force class and the operating conditions behind its ratings. DOE requires a voluntary flow representation at a different test pressure to identify that pressure.
What should I check before ordering?
Keep the current model number and photograph the hose, valve and connection arrangement. Have the supplier confirm replacement compatibility instead of assuming the spray head alone determines fit. Record the selected model with the equipment specification sheets.
Compare how the candidate handles the dishes and food residue your staff actually rinse. EPA's performance research found that spray force mattered to user satisfaction and addressed concerns about models needing longer rinse time. Also address leaks or a valve that fails to close; a good flow rating does not make continuous leakage acceptable.
If the replacement changes an approved equipment specification, use the material-substitution review before installation. Keep handwashing and warewashing arrangements in the restaurant plan-review scope; a pre-rinse device serves a specific dishwashing task.
Can a lower-flow valve justify a smaller water heater?
A lower rated flow is not approval to reduce the restaurant's hot-water capacity. Confirm the applicable County calculation and approved equipment schedule before changing heater sizing. The restaurant hot-water sizing guide covers that separate demand calculation.
Verify actual use after replacement. Record whether the valve closes properly, whether staff need longer rinsing and whether dishes are ready for the approved washing process. Those observations support the equipment decision without promising a fixed water-bill reduction.