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RIEGER offers as a special on the market this variant of the double seat bottom seat valve, in addition, the function of a changeover valve is realized.
The advantage over the usual pass dual seat bottom seat valves is that the pipeline during filling or emptying of the tank is not filled.
The pipeline is open only to the tank to be filled. Thus, an additional risk of contamination is avoided by otherwise necessary shut-off valves.
| Material | in contact with product optional not in contact with product |
1.4404/AISI316L 1.4435/AISI316L 1.4301/AISI304 |
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| Gaskets
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O-rings/gaskets | EPDM (others on request) |
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| Temperatures |
maximum | EPDM | |
| continuous operation steam sterilization |
130 °C* 150 °C* short-time (approx. 20 min) |
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| Pressures
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closing pressure
air pressure |
max. 4 bar in Tank max. 10 bar in Pipe min 6 bar – max. 10 bar |
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| Surfaces
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in contact with product optional not in contact with product |
Ra ≤ 0,8 µm e-polished, other surfaces on request Ra ≤ 1,6 µm |
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| Connections Standard- pipe classes |
DIN 11850-R2 (DIN 11866 A) O.D.-Tube (DIN 11866 C) |
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