(a) The following definitions refer to lawn spray sprinklers:

1. (1) Pressure regulator means a device that maintains constant operating pressure immediately downstream from the device, given higher pressure upstream.
2. (2) Integral pressure regulator means a device located within a spray sprinkler body that maintains constant operating pressure immediately downstream from the device, given a higher upstream pressure.
3. (3) Landscape means any areas that are planted or installed and designed to receive irrigation, including turf grass, ground covers, shrubs, trees, flowers, and similar plant materials. Landscape does not include agricultural crops grown and harvested for monetary return.
4. (4) Maximum operating pressure of a spray sprinkler body means the highest manufacturer-recommended inlet pressure to ensure proper operation.
5. (5) Nozzle of a spray sprinkler means the discharge opening or orifice of a spray sprinkler used to control the volume of discharge, distribution pattern, and droplet size.
6. (6) Orifice of a spray sprinkler means the emission point from a nozzle into the atmosphere.
7. (7) Regulation pressure of a spray sprinkler body means its rated outlet pressure, regardless of higher inlet pressure, as stated by the manufacturer.

8. (8) Spray sprinkler of a spray sprinkler body means its rated outlet pressure, regardless of higher inlet pressure, as stated by the manufacturer.

   1. (i) Consists of a spray sprinkler body and a nozzle or orifice.
   2. (ii) Discharges water through the air at a minimum flow rate of 0.5 gallons per minute when operated at an inlet pressure of 30 pounds per square inch or more, with the largest area of coverage available for the nozzle series using a full circle pattern.
9. (9) Spray sprinkler body means a sprinkler body that does not contain components to drive the rotation the nozzle or orifice during operation and lacks an integral control valve. This term includes a spray sprinkler body that is a component of a spray sprinkler.

10. (10) Sprinkler body means the exterior case or shell of a sprinkler incorporating a means of connection to the piping system, designed to convey water to a nozzle or orifice.

    (b) Standard requirements for lawn spray sprinklers.

11. (1) The spray sprinkler body shall meet all criteria in section 302 of ASABE/ICC 802-2014, sprinkler and bubbler design requirements, as incorporated by reference in section 509.61 of this Part.

    1. (i) Rated temperature. Sprinklers and bubblers shall be designed to withstand ambient air temperatures from –40° Fahrenheit (F) to 140° F (-40° to 60° C) without permanent distortion or degradation of performance. Sprinklers and bubblers shall be operable at ambient air and water temperatures from 40° to 140° F (5° to 60° C) and dynamic water temperatures from 40° to 85° F (5° to 36° C) over the operating pressure range specified by the manufacturer.
    2. (ii) Inlet connections. All inlet connections shall comply with the performance requirements of this standard. Where NPT pipe threads are used for inlet connections on sprinklers or bubblers, they shall be capable of mating with connections that comply with ASME B1.20.1 or ASTM F1498, as incorporated by reference in section 509.61 of this Part. All inlet connections shall comply with the performance requirements of this standard. All inlet connections shall be designed to withstand the full range of operating pressures without permanent distortion or leakage.
    3. (iii) Filters and strainers. Where installed, filters and strainers shall consist of a cleanable or replaceable element or elements that can be accessed without removing the body from the system.
    4. (iv) Servicing. Sprinklers or bubblers designed to allow the replacement of wearing or interchangeable parts shall be designed so that servicing can be accomplished without removing the body from the system.
    5. (v) Adjustments. Sprinklers or bubblers designed to allow the adjustment of any performance parameter shall be designed so that the adjustment can be accomplished while the device is installed.
    6. (vi) Burst pressure. Sprinklers and bubblers shall withstand a hydrostatic test pressure of 1.5 times the maximum published operating pressure, but not less than 150 psi (1034 kPa), when tested in accordance with section 303.5.1 of ASABE/ICC 802-2014, as incorporated by reference in section 509.61 of this Part, without permanent distortion or leakage.
    7. (vii) Check valve function. Sprinklers that are designed to have an integral means of preventing flow discharge through the emission device during periods of nonoperation shall be capable of preventing flow where the elevation change is equal to or less than 7 feet (3.0 psi).
    8. (viii) Pressure regulation. Sprinklers intended for use with spray nozzles shall incorporate integral pressure regulation to deliver optimum spray nozzle performance as stated by the manufacturer.

12. (2) The spray sprinkler body shall meet the following performance requirements when tested in accordance with the test method in the WaterSense Specification for Spray Sprinkler Bodies Version 1.0, Appendix B, as incorporated by reference in section 509.61 of this Part.

    1. (i) Maximum flow rate at any tested pressure level—The percent difference between the initial calibration flow rate (as described in Appendix B) and the maximum flow rate at any tested pressure level, averaged for the selected samples at the test pressure levels where the maximum flow rate occurred, shall not exceed +/- 12.0 percent.
    2. (ii) Maximum flow rate at any tested pressure level—The percent difference between the initial calibration flow rate (as described in Appendix B) and the maximum flow rate at any tested pressure level, averaged for the selected samples at the test pressure levels where the maximum flow rate occurred, shall not exceed +/- 12.0 percent.

    3. (iii) Minimum outlet pressure—The average outlet pressure at the initial calibration point (as described in Appendix B) of the selected samples shall not be less than two-thirds (67 percent) of the regulation pressure.

       (c) Test procedures for assuring compliance with the standards established in subdivision (b) of this section.

13. (1) The sprinkler body’s ability to provide pressure regulation and maintain consistent flow shall be tested in accordance with the methodology included in the WaterSense Specification for Spray Sprinkler Bodies Version 1.0, Appendix B, as incorporated by reference in section 509.61 of this Part.