Symbols Used; Defi Nition Of Terms; Intended Area Of Use; Technical Data - Gemü D480 Original Einbau- Und Montageanleitung

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 Defi nition of terms
Working medium
The medium that fl ows through the butterfl y
valve.
5

Technical data

Working medium
Gaseous and liquid media which have no negative impact
on the physical and chemical properties of the disc and seat
material.
Ambient conditions
Max. permissible ambient temperature
Installation conditions
Installation position
Flow direction
D480
-20 ... +70 °C
Optional
With contaminated
media and DN ≥ 300
install the butterfly valve
horizontally so that the
lower edge of the disc
opens in flow direction.
Optional
38 / 72
4

Intended area of use

WARNING
Use the butterfl y valve only for the
intended purpose!
® Otherwise the manufacturer liability
and guarantee will be void.
Use the butterfl y valve only in
G
accordance with the operating
conditions specifi ed in the contract
documentation and in the installation,
operating and maintenance
instructions.
The butterfl y valve may only be used in
G
potentially explosive zones confi rmed
in the declaration of conformity (ATEX).
 The GEMÜ D480 butterfl y valve is
designed for installation in piping
systems. It controls a fl owing medium
after a manual operator (D487),
pneumatic operator (D481) or motorized
operator (D488) has been mounted.
 The butterfl y 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 butterfl y valve!
Max. perm. temp. of working medium
-60 ... +210 °C (dependent on seat (liner) material)
Other temperatures on request
No water hammer permissible
Flow velocity
Maximum permissible fl ow velocity
PS
[bar]
Liquid media
up to 6 2.5
6 < PS ≤ 10 3
10 < PS ≤ 16 4
PS > 16 5
DIN EN 593:2012-03 / EN 593:2009+A1:2011 (D)
Gaseous media
[at ≈ 1 bar]
25
30
35
40