RIEGER E8 overflow valves are a combination of angle valves and overflow valves. Unlike an overflow valve, this valve opens with up to 100 % stroke like an angle valve if required. It is possible to seal the overflow valves.
One possible application is the protection of forced feed pumps (e.g. peristaltic pumps).
The E8 overflow valve is suitable for all liquid media.
Overflow valves are not safety valves.
We recommend the TÜV-approved safety valve type SHF for this purpose.
| 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) |
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| Temperatures | maximum | EPDM | |
| Continuous operating temperature
Sterilization temperature |
130 °C*
150 °C* for a short time |
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| Pressures | Possible set pressure for O-ring version | 0.5 – 10 bar (higher pressures on request) | |
| Pressure range depends on installed spring | Specify desired setting pressure when ordering | ||
| Control air pressure | min. 6 bar – max. 10 bar |
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| 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 |
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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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