Hygienic Mix Proof Valves N1

RIEGER Hygienic Mix Proof Valves N1 provide reliable protection for your product by leak-proof separating not compatible products. For years, they are invaluable in plants of beverage and brewing industry, the pharmaceutical industry as well as the food and dairy industry.
The design of its one-piece valve body and the radial sealing of both valve seats along with the balanced valve disks enable a perfectly safe CIP/ IP cleaning, thus ensuring extremely high security for your products.

SpeedPush Actuator

Air consumption and consumption of cleaning media in the use of Mix Proof Valves might also be considered for total costs of ownership.

In order to reduce air consumption and consumption of cleaning media Mix Proof Valves with reduced air volume in the actuator are recommended. With a reduced volume, faster switching of valve disks during CIP is possible to reach the desired cleaning result even faster. Thus, less cleaning media is required in the overall cleaning cycle.

Materialin contact with product
not in contact with product

(others on request)
 continuous operation
steam sterilization
 130 °C*
150 °C* short-time
(approx. 20 min)
Pressuresclosing pressure

air pressure
max. 10 bar
min 6 bar -
max. 10 bar
in contact with product

noit in contact with product
Ra ≤ 0,8 µm
other surfaces
on request
Ra ≤ 1,6 µm
DIN 11850-R2 (DIN 11866 A)
O.D.-Tube (DIN 11866 C)
                                                                                 *dependent upon operating conditions
reduced Type 200
reduced Type 150
Port configurations as shown
in picture or in 360° possible.

  • one-piece solid valve housing
  • no welding distortion
  • water hammer safe up to 30 bar
  • both valve disks are balanced
  • low control air consumption
  • light: DN 100 = 4" only 35 kg
  • standard actuator with 2 lift functions
    (open, upper seat lift, lower seat lift)
  • by lifting of both plates easy cleaning
  • service possible without compressed air
  • valve seat removable from the top
  • radial sealing of both valve seats
  • in the product area only 4 seals
  • seal replacement without special tools
  • contact with product 316L
  • inner surface Ra ≤ 0,8 µm (standard)
  • also available in 3-A version
  • Dimensions:   
    DN 25 – DN 200
    1" – 8"

This control top has been developed between AWH and Rieger in collaboration with Bürkert. It serves as a custom-fit solution for our in-house hygienic and aseptic process valves to achieve an even more efficient and precise application.

Contact-free inductive valve position measuring (Teach function)

  • status display luminated in colour
  • integrated control air supply to the actuator
  • field bus port AS-interface, DeviceNet, IO-Link or Bürkert system bus (büS)
  • with ATEX-option:
    Ex II 3 G Ex ec IIC T4 Gc X

    Ex II 3 D Ex tc IIIC T135°C Dc X

FlowStar is available in the models 24 V DC, AS-I bus, IO-Link (Port Class A) or Ethernet IP.
All models  are available as the following alternative:

  • 3 solenoid valves, 3 internal proximity switches + 1 outlet for external proximity switch

Mounting kit integrated in Control Top – no separate mounting kit necessary. Exception for LCV valves, ESV valves.

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:
Tel.: +49 7361 5702-0