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RIEGER hygienic double seal valves N4 are piggable or applicable for highly viscous media. They provide reliable protection for your product by leak-proof separating not compatible products. They prove themselves worldwide in systems for the beverage and food industries.
The design of its one-piece valve housing and the two radial sealings of both valve seats allow, together with the balanced valve disks a perfectly safe CIP/SIP cleaning and an extremely high level of security for your products.
In this model, the two valve seats can be alternatively lifted.
RIEGER double seal valves DD – piggable
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| Material | in contact with product optional not in contact with product |
1.4404/AISI316L 1.4435/AISI316L 1.4301/AISI304 |
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| Seals | O-rings/gaskets | EPDM (others on request) |
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| Temperatures | maximum | EPDM | |
| continuous operation steam sterilization |
130 °C* 150 °C* |
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| Pressures | closing pressure
control air pressure |
max. 10 bar upper line. Lower line see catalogue.
min 6 bar – |
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| 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 |
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| Connections Standard- pipe classes |
DIN 11850-R2 (DIN 11866 A) O.D.-Tube (DIN 11866 C) DIN EN ISO 1127 (DIN 11866-B) |
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