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The Rieger type ER overflow valves have evolved from the type E8 and form the “Reverse Acting” series of Rieger overflow valves. These type ER overflow valves can be opened pneumatically for CIP cleaning. You can also change the setting pressure manually within the available setting range. This type of valve with its housing configuration is used to protect a pump with a bypass line.
| Material | product touched 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
Sterilizing |
130 °C*
150 °C* short term |
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| Press | Possible set pressure with O-ring design | 0.5 – 10 bar (higher pressures on request) | |
| Pressure range depending on installed spring | Specify desired setting pressure when ordering | ||
| Control air pressure | min. 6 bar – max. 10 bar |
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| Surfaces | product touched 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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