AS 5034:2005 pdf – lnstallation and use of inert gases for beverage dispensing

AS 5034:2005 pdf – lnstallation and use of inert gases for beverage dispensing.
The inlet connection to the piping system. where it is intended to be connected to the supply system or control arrangement, shall he such that connection of high pressure gas to low pressure gas cannot occur.
NOTE: Connections which can be made or unmade in the normal operation of the system should be those from AS 2473 for the respective gas at cylinder pressure gas and from AS 4840 for the respective gas at lower pressure.
2.4.2.4 Isolation valves
Isolation valves shall be fitted at the beginning of a main line or a principal branch, shall be positioned to enable ease of operation and shall he identified as to its use.
NOTE: All valves installed should he of a type suitable for use with the supply gas.
2.4.2.5 Labelling
The piping systems shall be identified (see Clause 3.2.6,4).
2.5 I)ISPENSIN( APPLICATIONS
2.5.1 Requirements common to all dispensing applications
2.5.1.1 DL’SIgn
Each dispensing application connection point to the distribution system shall be provided with a manual isolation valve suitable for service with the supply gas at the pipeline maximum working pressure.
If the distribution system supplies gas at pressures greater than 400 kPa (beer and keg systems, see Clause 2.2.3.3) or 800 kPa (post-mix systems). the connection to the distribution system shall incorporate a pressure regulator.
If the distribution system supplies gas at pressures less than 400 kPa (beer and keg systems. see Clause 2.2.3.3) or 800 kPa (post-mix systems). the dispensing application connection to the distribution system should comply with AS 4840.
2.5.1.2 Pressure regulation
Pressure regulators shall NOT he capable of being adjusted to deliver a pressure in excess of 400 kPa (beer and keg systems. see Clause 2.2.3.3) or 800 kPa (post-mix systems).
If a low inlet pressure regulator is not intended to be readily detachable, its inlet connection may be other than that specified in AS 4840 but in no case shall it be a high pressure connection or those specified in AS 2473 for the supply gas. i.e. not to Types 10. 30. 50 or
60.
2.5.1.3 Pressure relief devices
If a dispensing application unit is connected to pressurited beverage storage vessels, each vessel shall be protected by a pressure relief device appropriate to the vessel design pressure (see Clause 2.2.3.3).
2.5.2 Particular requirements for dispensing applications
2.5.2.1 Post mix
Post mix applications should comply generally with Figures 2.7 and 2.8 as appropriate. The CO2 supply to the carbonator shall be fitted with at least one non-return device, either inline or built into the carhonator.