UL 2129-2021 pdf free download.Halocarbon Clean Agent Fire Extinguishers.
6.3A disposable extinguisher shall not be rechargeable.
6.4 An extinguisher having a volume in excess of 2.3 L (140 in2) shall be capable of standing in theupright position without support.
6.5 A material for an extinguisher part, the deterioration of which causes the extinguisher to becomeinoperable or results in risk of injury to persons, shall not be susceptible to stress corrosion.
6.6 A polymeric or other nonmetallic part, other than an “o” ring or gasket, shall be evaluated on thebasis of:
a) Mechanical strength，including resistance to impact, see Handle and Mounting Device Test,Clause 28;Hydrostatic Pressure Test, Clause 39; Vibration Test, Clause 40; Roadability and RoughUsage Tests, Clause 41; Burst Strength Test – Gauges and Indicators,Clause 50; NameplateExposure Tests, Clause 58;
b) Moisture absorption, see Salt Spray Corrosion Test, Clause 45; One-Year Time Leakage Test,Clause 48; Nameplate Exposure Tests, Clause 58;
c) Flammability, see 6.7;
d) Resistance to deterioration due to aging, see Aging Tests – Polymeric Materials,Clause 43;One-Year Time Leakage Test, Clause 48; Nameplate Exposure Tests, Clause 58;
e)Exposure to light and water, see 43.3; Nameplate Exposure Tests, Clause 58; andf) Exposure to the extinguishing agent, see 43.2.
6.7 With reference to flammability,polymeric materials shall be classified as HB,V-O,V-1，V-2,5VA, or5VB, when tested in accordance with the Standard for Tests for Flammability of Plastic Materials for Partsin Devices and Appliances, UL 94.Other nonmetallic materials shall have equivalent characteristics.
6.8 An extinguisher shall operate as intended from the minimum storage temperature to 49℃(120°F).inclusive.Currently recognized minimum storage temperatures are minus 40° C(minus 40°F) and minus54C ( minus 65°F). See Operating Temperature Limits Test, Clause 33.
6.9 The edges and surfaces of a valve, cap, closure, hose, cylinder, handle, mounting device, and similaritems, shall not be sufficiently sharp to constitute a risk of injury to persons in maintenance and use.
6.10 Whenever reference measurements are required to determine that a part as described in 6.9 is notsufficiently sharp to constitute a risk of injury to persons, the method described in the requirements for thetest for sharpness of edges on equipment, the Standard for Test for Sharpness of Edges on Equipment,UL1439, is to be employed.
6.11 A hand-portable extinguisher shall have a gross weight not exceeding 27 kg(60 lb).
6.12 A pressurizing adaptor for a rechargeable stored pressure type extinguisher shall have threads orother mechanical means for securement to the valve assembly.UL 2129 pdf download.