Hygienic Reverse Acting Valves Type ER

The Overflow Valves Type ER by Rieger are based on the design of the Type E8 and are the „Reverse Acting“ line within Rieger’s Overflow Valves. These Overflow Valves Type ER can be opened pneumatically for CIP cleaning. You can also adjust the set pressure in the possible pressure range manually. This valve type with its body configuration is used to secure pumps with a bypass tube line.

Materialin contact with product
optional
not in contact with product
1.4404/AISI316L
1.4435/AISI316L
1.4301/AISI304
   
Gaskets

O-rings/gaskets

EPDM (others on request)

  

Temperatures

maximum
EPDM
 

continuous operation

steam sterilization


 		130 °C*

150 °C* short-time
(approx. 20 min)
    
Pressures

possible set pressure for
O-ring version

0,5 - 10 bar (other pressures on request)

 

set pressure range
dependent on installed
pressure spring


Requested set pressure required in purchase order


air pressure

min. 6 bar -
max. 10 bar

 
Surfaces

in contact with product
optional


not in contact with product		Ra ≤ 0,8 µm
e-polished, other surfaces on request

Ra ≤ 1,6 µm
   
Connections
Standard-
pipe classes		DIN 11850-R2 (DIN 11866 A)
O.D.-Tube (DIN 11866 C)
DIN EN ISO 1127 (DIN 11866-B)
                                                                                
*dependent upon operating conditions
Construction of the valve

massive valve housing

no dead spaces

completely draining

many possible installation orientations


Absolute product safety

perfect isolation from the environment

no sump , no dome


Serviceability

seal replacement without special tools

low downtime

perfectly cleanable


Efficiency

standard seals

minimal maintenance costs


Additional certificates
in 3-A-design possible


For a smooth position detection from 0-100 % even from a first movement of the valve spindle we recommend the Bürkert Positioners with (0) 4-20 mA.


  • Bürkert 8692 WITH display and control buttons for programming directly to the valve (M12) see Bürkert 0227301
  • Bürkert 8694 WITHOUT display or control buttons for programming directly on the PLS/PC (M12) see Bürkert 0227417
  • Bürkert 8694 WITHOUT display or control buttons for programming directly on the PLS/PC (grommet) see Bürkert 0227411

All Valves are available in special alloys, such as Hastelloy® C-22, 1.4539/904L, 1.4529, AL-6XN® and others.

Directly send us your inquiry:
sales@rr-rieger.de
Tel.: +49 7361 5702-0
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