UL 2586B-2015 pdf download

UL 2586B-2015 pdf download.Hose Nozzle Valves for Diesel Fuel, Biodiesel Fuel, Diesel/Biodiesel Blends with Nominal Biodiesel Concentrations up to 20 Percent (B20),Kerosene, and Fuel Oil.
12.2 Samples
12.2.1 Samples of complete device are to be tested. All inlet and outlet openings of the samples shall be sealed in accordance with 12.2.3.
12.2.2 It platings or coatings are used internal to the device, additional samples may be used. See 12.4.2.
12.2.3 Closures shall be provided to seal off inlet and outlet openings of all samples in accordance with 12.2.1 These closures shall be fabncated of suitable materials. The closures shall be provided with a 1/4 inch NPT opening for connection to the test apparatus. All closures shall be installed by the manufacturer and provided with a torque rating. There will be no other adjustment to connections for the duration of me test,
12.2.4 Any 0-rings, gaskets, or other sealing materials, shall be provided and installed by the manufacturer. The dynamic sealing devices or materials shall be the same as those that will be used in the final product installation. Static seals shall be representative of the seals being used in the final product installation. If the sealing device or material is not considered part of the device under test. but will be provided In the end product at the time of installation, a representative seal shall be provided for the test.
12.3 Method
12.3.1 The sample isto be exposed to the applicable test fluid in accordance with 12.1.1. The test fluids shall be prepared using the instructions in Supplement SA.
12.3.2 A quick connect device is connected to the 1/4 inch NPT connection at the inlet, and is used to fill the samples with the applicable test fluids. A source of pressure may be used to assist In filling or draining the samples, however, the pressure shall not exceed the rated pressure of the device under test. Once the samples are filled to exclude all air, they are closed oft and sealed. The samples are then placed in me lest chamber.
12.3.3 The chamber temperature is increased to 60 ±2°C (140 ±4°F). When the chamber reaches this temperature, the exposure period begins. The samples are exposed to the applicable test fluid at 60 ±2°C for approximately 168 hours. At the end of this duration, the exposure period is halted and the chamber is allowed to cool. The samples are subjected to rated pressure, but not less than 50 psi (340 kPa). for one minute. The fluid is then drained from the samples and observed. After this observation, the fluid is discarded, The samples are then immediately refilled with new test fluid and the chamber temperature Is allowed to increase to 60 ±2°C again. The total duration of the test shall equal 2,520 hours of exposure at 60±2°C.
12.3.4 At the end of the total exposure duration, the test fluid is left in the samples and the samples are removed from the chamber. The samples are then subjected to the test sequence as outlined in 10.3 and in accordance with 10.4. Prior to the initiation of me test sequence, me Long Term Exposure test fluid Is to be drained and discarded.
12.3.5 If the device contains any parts or surfaces that are plated or coated. if the device uses casting impregnation materials to eliminate porosity leakage, or if the device contains internal nonmetallic parts. the plating, coating, impregnation, or internal parts are tested both during and after this exposure. See 12.4.2 and 12.4.4.
13.2 With reference to 13.1, hose nozzle valves may be subjected to an aerostatic or hydrostatic pressure source. For tests performed using an aerostatic pressure source, the hose nozzle shall be submerged in water to a depth of approximately 25,4 mm (1 Inch) while under test pressure, for a duration of 1 minute. There shall be no bubbles observed in the water, indicating leakage observed, during the duration. For tests performed using a hydrostatic pressure source, the test duration is to be 5 minutes.
13.3 For all hose nozzle valves, there shall be no leakage outside of fluid confining areas and there stiall be no evidence of casting porosity leakage during this test.