C67
3 Definition of terms
Working medium
The medium that flows through the
diaphragm valve.
4 Intended area of use
The GEMÜ CleanStar
®
C67 diaphragm
valve is designed for installation in piping
systems. It controls a
fl
owing medium by
manual operation.
The valve may only be used providing
the product technical criteria are
complied with
(
see chapter 6
"Technical data"
)
.
Do not paint the bolts and plastic parts of
the diaphragm valve!
WARNING
Use the diaphragm valve only for the
intended purpose!
®
Otherwise the manufacturer liability and
guarantee will be void.
G
Use the diaphragm valve only in
accordance with the the operating
conditions speci
fi
ed in the contract
documentation and in the installation,
operating and maintenance
instructions.
5 Scope of delivery
The scope of delivery includes:
Diaphragm valve
For
fl
are connections: Union nuts
Installation, operating and maintenance
instructions
The GEMÜ diaphragm valve is supplied as a
separately packed component.
6 Technical
data
Flow direction
Optional
Materials
HPS version: Media wetted parts (body)
PP
HPW version: Media wetted parts (body)
PFA
PVDF version: Media wetted parts (body)
PVDF
Diaphragm PTFE
External bonnet parts
PVDF
HPW version: Union nut (bonnet-body), optional
ECTFE
Operating temperature
See temperature / pressure diagrams page 25
Ambient temperature
Max. 60 °C (130 °F)
Operating pressure
Max. 6 bar when applied upstream only
Vacuum 400
mbar/abs*
* The life expectancy of the valve may be affected if exposed to a
greater vacuum.
Working medium
Corrosive, inert, gaseous and liquid media (HPW version:
particularly high purity media), which have no negative
impact on the physical and chemical properties of the body
and diaphragm material.
High Flow version with improved Kv values.
PVDF version: Kv / Cv values - 2/2-way valves
Connection
Size
Kv value*
Cv value
Size
Connection
Code
DN
Bonnet
l/min
US gal/min
1/2”
Pipe
Union ends
7, 78
15
2
68.0
4.7
* The measurement was carried out with water at 5 bar inlet pressure and a temperature of 20 °C.
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