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Assembly and maintenance instructions
Safety valve
652mFK, 652sGK, 861/461, 420, 460
1
General Notes of Safety
• Only use the valve:
- for the specified purpose
- in satisfactory condition
- with respect for safety and potential hazards
• Always observe the installation instructions.
• Faults that may impair safety must be addressed immediately.
• The valves are exclusively intended for the application area stated in these ins-
tallation instructions. Any other or further use is not valid as the intended use.
• The manufacturer´s warranty shall be null and void if the sealed cover is
removed.
• All assembly work is to be carried out by authorized specialist staff.
2
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
required 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 withe the paint.
3
Range of Application
For details on the range of application of the individual versions please refer to the
datasheets of the manufacturer.
Assembly and maintenance instructions - 851/451, 852/452/352, 652, 861/461, 420, 460 | Version: 06/2023 · V02
851/451, 852/452/352,
en
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