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RIEGER Overflow valves E8 are a combination of angle valves and relief valves. Unlike an overflow valve, this valve opens on request up to 100% stroke like shut-off valve. It is possible to seal the overflow valves.
One possible application is the protection of forced-feed pumps e.g. peristaltic pumps.
The overflow valve E8 is suitable for all liquid media.
Overflow valves are no safety valves.
For this purpose we recommend the TÜV certified safety valve type SH.
| 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 |
O-rings/gaskets | EPDM (others on request) |
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| Temperatures |
maximum | EPDM | |
| continuous operation
steam sterilization |
130 °C*
150 °C* short-time |
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| Pressures | possible set pressure for O-ring version |
0,5 – 10 bar (other pressures on request) | |
| set pressure range dependent on installed pressure spring |
Requested set pressure required in purchase order | ||
| air pressure | min. 6 bar – max. 10 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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