UL 385-2020 pdf download

UL 385 2020 pdf download.Play Pipes for Water Supply Testing in Fire Protection Service.
1 Scope 1.1 These requirements cover play pipes for testing of water supplies for fire protection service. 1.2 The play-pipe design and construction covered herein and illustrated in Figure 10.1 has been commonly identified as the Underwriter or National Standard type. 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for that component. 2.2 A component is not required to comply with a specific requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.4 Specific components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specified limits, and shall be used only under those specific conditions. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information.
4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. CONSTRUCTION 5 Materials 5.1 The pipe shall be made of seamless drawn copper 0.050 inch (1.3 mm) thick, or of rolled brass 1/16 inch (1.6 mm) thick. 5.2 Metal parts, exclusive of the pipe section, shall be made of an alloy of copper, tin, lead, and zinc containing not less than 81 percent copper and not more than 9 percent zinc. 6 Pipe 6.1 The play pipe shall be not less than 15 inches (381 mm) nor more than 30 inches (762 mm) long overall.
6.2 The pipe shall have an inside diameter of 2-17/32 inches (64 mm) at the base and 1-3/4 inches (44 mm) at the throat. 6.3 The inside diameter at the throat shall be accurate within a tolerance of ±1/64 inch (0.4 mm). 6.4 The pipe shall extend through the brass mountings at the throat. 6.5 The butt and nozzle adapter shall be soldered to the pipe. 6.6 The waterways shall be free of drops of solder or other projections and shall have a smooth surface throughout. 7 Butts 7.1 The butt shall be threaded to fit as ordered. A recess shall be provided in back of the threads for retaining a washer. 8 Handles 8.1 The handle shall be of the swivel pattern. The handle and its means of retention shall resist without rupture or permanent distortion a force of 300 pounds (1334 N) applied at the center of each gripping section in each of four directions, that is, in both directions parallel and in both directions perpendicular to the center line of the play pipe. 9 Nozzle Adapters 9.1 The brass mounting to which the nozzle is threaded shall be provided with an outside recess for retaining a rubber washer. It and the nozzle shall be threaded with 2-3/16 inch – 12 threads having dimensions conforming with those designated in Table 9.1.
11 Hydrostatic Pressure Test 11.1 A play pipe shall withstand for 5 minutes, without rupture or separation of the butt or nozzle adapter, a hydrostatic pressure of 500 psi (3.45 MPa) applied as specified in 11.2. Slight leakage between the pipe and butt or nozzle adapter joints is to be disregarded. 11.2 The inlet of the play pipe is to be connected to a test water supply. The nozzle adapter outlet of the play pipe is to be fitted with a cap or other equivalent fitting. After bleeding the entrapped air, the play pipe is to be pressurized to 500 psi (3.45 MPa). MARKING 12 General 12.1 The name or identifying symbol of the manufacturer or vendor and the year of manufacture shall be stamped or cast on the butt. 12.2 If a manufacturer produces play pipes at more than one factory, each play pipe shall have a distinctive marking by which it may be identified as the product of a particular factory.UL 385 2020 pdf download.