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3 Product description
3.2 Description
The GEMÜ 652 pulsation damper is designed for use with li-
quid and gaseous media in sterile areas of application. In
many production plants, unwanted pressure surges arise
which are generated by switching on pumps or quickly switch-
ing valves, for example. In addition, pressure surges may
cause unwanted momentary opening of shut-off valves, thus
contaminating media. Likewise, an increased pressure may
arise in the medium pipe due to thermal expansion of the me-
dium. This can cause damage to plant components such as
filters, sensors or piping. As a solution to this GEMÜ has de-
veloped the pulsation damper GEMÜ 652 , which is based on
the proven diaphragm valve technology and is designed so
that it releases a volume in a particular pre-defined pressure
surge area, and consequently catches and compensates for
the pressure surge. The valve body is open in-line with flow
direction, and not intended to shut off the medium.
3.3 Function
The GEMÜ 652 pulsation damper is usually installed in piping
in order to compensate for pressure surges or else thermal
expansions of the medium. The product has a piston actuator
and an optical position indicator as standard.
All actuator parts including closing springs (except seals) are
made from stainless steel. In diaphragm size 80, the com-
pression springs consist of epoxy coated spring steel. The
product is pushed by the spring force in the direction of the
pipe, and releases the corresponding compensation volume,
depending on version, pressure surge or thermal expansion.
The product body and the diaphragm are available in various
designs in accordance with the datasheet. The product can be
cleaned (CIP) and sterilized (SIP) without disassembly, and is
autoclavable (depending on version).
Electrical position indicators are available as accessories.
GEMÜ 652
3.4 Product label
The product label is located on the actuator. Product label
data (example):
Design in accordance with order data
Item number
Traceability number Consecutive number
The month of manufacture is encoded in the traceability num-
ber and can be obtained from GEMÜ. The product was manu-
factured in Germany.
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Device-specific data
Year of manufacture
www.gemu-group.com
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