Symbols Used; Defi Nition Of Terms; Limited Use; Delivery Condition - GEM 625 Installation, Operating And Maintenance Instructions

2.3

Symbols used

Danger - hot surfaces!
Danger - corrosive materials!
Hand: indicates general notes and
+
recommendations.
Point: indicates the tasks to be
G
performed.
Arrow: indicates the response(s) to
®
tasks.
More detailed directions sign

3 Defi nition of terms
Working medium
The medium that fl ows through the diaphragm
valve.
Control medium
The medium with which increasing or
decreasing pressure causes the valve to be
actuated and operated.
Control function
The possible diff erent actuation functions of
the diaphragm valve.
625_us
4

Limited use

The GEMÜ 625 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 6
"Technical Data").
To avoid malfunction which could

cause injury or damage, do not paint the
bolts and plastic parts of the diaphragm
valve!
Use the diaphragm valve only for the
intended purpose!
The diaphragm valve must not
®
be used in explosion-endangered
zones unless expressly approved in
the contract documentation. This can
cause death or serious personal injury
Further, the manufacturer liability and
guarantee will be void.
Use the diaphragm valve only in
G
accordance with the operating
conditions specifi ed in the contract
documentation and in the installation,
operating and maintenance
instructions.
5

Delivery condition

The GEMÜ diaphragm valve is supplied as a
separately packed component.
20 / 36
WARNING