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7
Maintenance and service
7.1
Safety during cleaning
Take note of the specifications in the safety data sheet, the general occupational health and
safety rules and the HEROSE information sheet "Use with oxygen" if degreasers are used for
process-related reasons for the cleaning of bearing parts, unions and other precision parts.
7.2
Maintenance
The maintenance and inspection intervals must be defined by the operating company according to the
operating conditions and the national regulations.
The manufacturer's general recommendations for the maintenance and inspection of the globe valves are
given in the table below and are based on the national standards of the country of manufacture.
Inspection and maintenance intervals
Description
Inspection
Functional testing
External inspection
Internal inspection
Strength test
28
Operating instructions
Recommended intervals
Interval
During start-up
Annually
Every 2 years
Every 5 years or ≥ 500
loading cycles
Every 10 years
Phone +49 4531 509-0
Scope
Visual inspection
of the valve for damage;
of the valving marking for
legibility;
Installation position;
Leak-tightness
at the packing gland;
between bonnet and body;
of the valve seat;
Test the opening and closing
functions of the valve.
Test the opening and closing
functions of the valve
including a visual inspection.
Function and tightness test
including visual inspection.
Replacement of all sealing
elements, including a function and
tightness test as well as a visual
inspection.
Replacement of all sealing
elements, including a function, leak
and pressure test as well as an
inspection.
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