Hygienic Control/Modulating Valves

RIEGER control or modulating valves  are especially convincing in food sector, but also in the pharmacy by strength and durability. This is based on the flow control cones with O-ring sealing which ensure uninterrupted production processes and product safety.

Longer production cycles mean lower maintenance costs and higher productivity.

On the product side, the control valves are equipped with metal control cones. The control behavior (Kv values) can be customized to your processes on site. For this we need as a basis for calculating the desired Kv values at 50 % and 100 % (= Kvs or Cvs) valve opening.

Note:
Kv = Cv x 0,86
Cv = Kv x 1,16

Because of the modular system is a change of the actuators between – manual (DN 10-100 or 3/8"-4") or pneumatic with positioner (DN 25-100 or 1"-4") – always possible.
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)
   
Temperaturesmaximum
EPDM
 continuous operation

steam sterilization
 
130 °C*

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

air pressure
 
max. 6 bar

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


Recommended Bürkert positioner 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 C22, 1.4539/904L, 1.4529, AL6XN and others.

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