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General Notes
Safety valves are high-quality fittings which require a particularly careful handling.
The sealing surfaces are precision-machined at the seat and cone to attain the re-
quired tightness. Always avoid the penetration of foreign particles into the valve
during assembly and during the operation. The tightness of a safety valve can be
impaired when using hemp, Teflon tape, as well as through welding beads, among
other things. Also rough handling of the finished valve during storage, transport and
assembly can result in a safety valve leaking. If the safety valves are painted, make
sure that the sliding parts do not come into contact with the paint.
The selected materials and sealing materials must be suitable for the application.
Transport and storage conditions
• Protect the fitting from external influences, e.g. dirt, moisture, impact, blows or
vibrations. Transport the fitting only in the supplied packaging. Only remove the
plastic bags and protective caps immediately before assembly.
• Store the fitting in a dry and dirt-free location; in damp storage rooms, prevent the
formation of condensation by using desiccants or heating.
• Maintain transport and storage temperatures between -20°C and 65°C.
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Range of Application
Atmospheric discharge (sGK, sGO)
for air and other neutral, non-toxic and non-flammable gases that may be blown off
freely to the environment.
Gastight version of outlet housing (tGO, GOX)
for air and other neutral, non-toxic and non-flammable gases as well as non-neutral,
toxic and flammable gases that may not be discharged to the environment.
Series 492 GOX is specifically available for gaseous oxygen. Valves used for pro-
tection against excess pressure in pressure tanks which are in compliance with the
specifications of the AD-2000 data sheet A2, or as safety devices to protect pressure
equipment in compliance with the EC Pressure Equipment Directive.
For details on the range of application of the individual versions please refer to the
datasheets of the manufacturer.
Assembly and maintenance instructions - 492, 492 GOX
www.goetze-valves.com
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