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General notes
The shut-off valves, ron-return valves and dirt trap are high-quality fittings that must
be grounded with particular care. The sealing surfaces on the seal and valve seat are
precision machined in order to achieve the necessary tightness. The ingress of for-
eign bodies into the shut-off valve must be avoided during assembly and operation.
The shut-off valves must be stored in the condition in which they are delivered, i.e.
free of oil, grease, particles and dirt, and in a dry place.
The tightness of a valve can be impaired by hemp, PTFE tape or other sealants, as
well as by welding beads, etc. Rough handling during storage, transport and assem-
bly can damage a valve and cause it to leak. The required tools must be cleaned
sufficiently before assembly.
The customer must take the following points into consideration when planning and
designing valves:
• The working pressure that occurs (pressure surges/pulse pressure). The pressures
specified in the data sheet refer to static loads. For dynamic and alternating loads,
appropriate pressure reductions must be observed.
• The selected materials and sealing materials must be suitable for the application.
• The drive length (type 2140 / 2180, pos. 4) must be designed in such a way that the
spindle seal cannot freeze.
• Do not use an extension to operate the handwheel (type 2140 / 2180).
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.
Assembly and maintenance instructions - 2140 / 2180 / 2142 / 2182 / 2143 / 2183 | Version: 06/2023 · V02
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