Symbols Used; Definition Of Terms; Intended Area Of Use - GEM 751 Installation, Operating And Maintenance Instructions

2.3

Symbols used

Danger - hot surfaces!
Danger - corrosive materials!
Danger - bodily injury!
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 ball
valve.
Control medium
The medium whose increasing or
decreasing pressure causes the ball valve to
be actuated and operated.
Control function
The possible actuation functions of the ball
valve.
751 ... D
4

Intended area of use

The GEMÜ 751 2/2-way ball valve

is designed for installation in piping
systems. It controls a flowing medium
by being closed or opened by a control
medium.
The ball 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 ball valve!
Use the ball valve only for the intended
purpose!
Otherwise the manufacturer liability
®
and guarantee will be void.
Use the ball valve only in accordance
G
with the operating conditions specified
in the contract documentation and
in the installation, operating and
maintenance instructions.
The ball valve may only be used in
G
potentially explosive zones confirmed
in the declaration of conformity (ATEX).
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WARNING