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651
7.4 Tools required
G The tools required for installation and
assembly are not included in the scope
of delivery.
G Use appropriate, functional and safe
tools.
8 Functional description
The GEMÜ 651 piston actuated 2/2-way
diaphragm valve is designed for use in
sterile applications. It has a fully integrated
automation module. Normally closed
and Normally open control functions are
available.
The automation module is available in two
versions. Either as a combi switchbox
with integrated 3/2-way pilot valve for valve
actuation and position feedback or with an
integrated electro-pneumatic positioner.
GEMÜ 651 has a microprocessor
controlled, intelligent position sensor as
well as an integrated analogue travel sensor
system. The Speed
-AP
function simplifies
commissioning. The base of the actuator
housing is made of stainless steel, the
cover is made of a stable transparent
plastic material. "Normally closed (NC)"
and "Normally open (NO)" control functions
are available. The valve body and the
diaphragm are available in various designs
as shown in the data sheet.
9 Construction
Automation module
Electrical
connection
Control medium
connector
A
1
2
Construction
A Actuator
1 Valve body
2 Diaphragm
10 Installation and operation
Prior to installation:
G Ensure that valve body and diaphragm
material are appropriate and compatible
to handle the working medium.
G Check the suitability prior to the
installation.
See chapter 5 "Technical data".
10.1 Installing the
diaphragm valve
WARNING
The equipment is subject to pressure!
® Risk of severe injury or death!
G Only work on depressurized plant.
WARNING
Corrosive chemicals!
® Risk of caustic burns!
G Wear appropriate protective
gear when installing.
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