The N5 hygienic double-seat bottom valve is the tank bottom version of our double-seat valves. It is available with one or two outlets and with a loose or screwed-on weld-in flange. For a horizontal installation position, we recommend our N52 version (see housing shapes).
| Material | in contact with the product optional not in contact with the product |
1.4404/AISI316L 1.4435/AISI316L 1.4301/AISI304 |
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| Seals | O-rings/seals | EPDM (others on request) |
|
| Temperatures | maximum | EPDM | |
| Continuous operating temperature Sterilization temperature |
130 °C* 150 °C* for a short time (approx. 20 min) |
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| Press | Closing pressure
Control air pressure |
max. 4 bar in the tank max. 10 bar in the pipe min 6 bar – |
|
| Surfaces | in contact with the product optional not in contact with the 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) |
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Nominal widths:

The control head from Rieger was developed in collaboration between AWH and Rieger together with Bürkert.
Rieger thus offers you a tailor-made solution for your in-house hygienic and aseptic process valves, enabling them to be used even more efficiently and accurately.
NON-CONTACT INDUCTIVE VALVE POSITION DETECTION (TEACH FUNCTION)
The FlowStar is available in 24 V DC, AS-I bus, IO-Link (Port Class A) or Ethernet IP versions.
All versions are available as the following alternative:
Mounting kit integrated in the control head – no separate mounting kit required. Exception for LCV valves, ESV valves.
All valves are available in special materials such as Hastelloy® C-22, 1.4539/904L, 1.4529, AL-6XN® and others .
Please contact us directly:
sales@rr-rieger.de
Tel.: +49 7361 5702-0