Symbols Used; Defi Nition Of Terms; Intended Area Of Use - Gemü 620 Original Einbau- Und Montageanleitung

2.3

Symbols used

Danger - hot surfaces!
Danger - corrosive materials!
Hand: indicates general information
and recommendations.
Bullet point: indicates the tasks to
G
be performed.
Arrow: indicates the response(s) to
®
tasks.
Enumeration sign

3 Definition of terms
Working medium
The medium that flows through the valve.
Control medium
The medium with which increasing or
decreasing pressure causes the valve to be
actuated and operated.
Control function
The possible actuation functions of the
valve.
4

Intended area of use

The GEMÜ 620 diaphragm valve is

designed for installation in piping
systems. It controls a fl owing medium
by being closed or opened by a control
medium.
The valve may only be used providing

the product technical criteria are
complied with (see chapter 5
"Technical Data").
Do not paint the bolts and plastic parts of

the valve!
Use the valve only for the intended
purpose!
® Otherwise the manufacturer liability and
guarantee will be void.
Use the valve only in accordance with
G
the operating conditions specifi ed in
the contract documentation and in the
installation, operating and maintenance
instructions.
The valve may only be used in
G
potentially explosive zones confi rmed
in the declaration of conformity (ATEX).
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WARNING
620