ISO 20766-25:2022 pdf download – Road vehicles — Liquefied petroleum gas (LPG) fuel system components — Part 25: Gas connections.
4 Markings Marking of the component shall provide sufficient information to allow the following to be traced: a) the manufacturer ’s or agent ’s name, trademark or symbol; b) the model designation (part number); c) the working pressure or working pressure and temperature range; d) the serial number or date code; and e) the direction of flow (when necessary for correct installation). The following additional markings are recommended: — the type of fuel; — the electrical ratings (if applicable); — the symbol of the certification agency; — the type approval number; and — a reference to this document. NOTE This information can be provided by a suitable identification code on at least one part of the component when it consists of more than one part. In the event that a component cannot accommodate all marking requirements listed in this document, the manufacturer shall include missing marking information with the packaging of the component. 5 Construction assembly The gas connections shall comply with the applicable provisions of ISO 20766-1 and ISO 20766-2, and with the tests specified in Clause 6 . Soldered or welded joints are not permitted. Soldering or welding can be permitted for connecting the individual parts of detachable couplings to the gas tube or component. Gas tubes shall only be connected by compatible fittings with regard to corrosion. Gas tubes and couplings should mate to avoid galvanic corrosion. Distributing-blocks shall be made of corrosion-resistant material. Gas tubes shall be connected by appropriate joints or fittings. Under no circumstances joints or fittings may be used whereby the tube will be damaged. The burst pressure of the joints or fittings shall be the same or higher as specified for the tube. The number of joints or fittings shall be limited to a minimum. Any joints shall be made in locations where access is possible for inspection. There shall be no gas-conveying connections in the passenger compartment or enclosed luggage compartment with the exception of: a) the connections in the gas-tight housing; and b) the connection between the gas tube or hose and the filling unit if this connection is fitted with a sleeve which is resistant against LPG and any leaking gas will be discharged directly into the atmosphere. 6 Tests 6.1 Applicability The tests required to be carried out are indicated in Table 1.
ISO 20766-25:2022 pdf download – Road vehicles — Liquefied petroleum gas (LPG) fuel system components — Part 25: Gas connections
