Technical Data - Gemü R677 Original Einbau- Und Montageanleitung

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Technical data

Working medium
Corrosive, inert, gaseous and liquid media which have no
negative impact on the physical and chemical properties of
the body and diaphragm material.
Working medium temperature
Valve body PVC-U
Valve body ABS
Valve body PP / PP-H
Valve body PVDF
The permissible operating pressure depends on the working
medium temperature.
Temperature in °C
(plastic body)
Valve body material
PVC-U Code 1
ABS Code 4
PP Code 5
PP-H Code 71
PVDF Code 20
PVDF Code 75
Data for extended temperature ranges on request. Please note that the ambient temperature and medium temperature generate a combined
temperature at the valve body which must not exceed the above values.
The specified operating pressure relates to the valve body. It may be lower in combination with a diaphragm (see Operating pressure table).
Diaphragm size
20
25
40
50
80
100
The above values are valid for both flow directions.
All pressures are gauge pressures. Operating pressure values were determined with static operating pressure applied on one side of a closed
valve. Sealing at the valve seat and atmospheric sealing is ensured for the given values.
Information on operating pressures applied on both sides and for high purity media on request.
Kv values determined acc. to DIN EN 60534, inlet pressure 5 bar, ∆p 1 bar, PVC-U valve body and soft elastomer diaphragm.
The Kv values for other product configurations (e.g. other diaphragm or body materials) may differ. In general, all diaphragms are subject to
the influences of pressure, temperature, the process and their tightening torques. Therefore the Kv values may exceed the tolerance limits of
the standard.
10 to 60 °C
-10 to 60 °C
5 to 80 °C
-10 to 80 °C
Pressure / temperature correlation for plastic
-10 ±0 5
- - - 10.0
10.0 10.0 10.0 10.0
- - 10.0 10.0
- - 10.0 10.0
10.0 10.0 10.0 10.0
10.0 10.0 10.0 10.0
Operating pressure [bar]
DN EPDM/FPM
15
20
25
32
40
50
65
80
100
21 / 36
Ambient temperature
Valve body PVC-U
Valve body ABS
Valve body PP-H
Valve body PVDF
O-ring material
for valve bodies with union ends
Diaphragm material
NBR
FPM
EPDM
PTFE
Other combinations on request
10 20 25 30
Permissible operating pressure in bar
10.0 10.0 8.0
10.0 10.0 8.0
10.0 10.0 8.5
10.0 10.0 8.5
10.0 10.0 9.0
10.0 10.0 9.0
PTFE
0 - 10 0 - 10
0 - 10 0 - 10
0 - 10 0 - 10
0 - 10 0 - 10
0 - 10 0 - 6
0 - 10 0 - 6
10 to 50 °C
-10 to 50 °C
5 to 50 °C
-10 to 50 °C
O-ring material
EPDM
FPM
EPDM
FPM
40 50 60 70
6.0 3.5 1.5 -
6.0 4.0 2.0 -
7.0 5.5 4.0 2.7
7.0 5.5 4.0 2.7
8.0 7.0 6.3 5.4
8.0 7.1 6.3 5.4
Kv Value
[m³/h]
6
10
12
20
42
46
70
120
189
R677
80
-
-
1.5
1.5
4.7
4.7