
www.gemu-group.com 5 / 21 GEMÜ 566
2 Safety information
The safety information in this document refers only to an in-
dividual product. Potentially dangerous conditions can arise
in combination with other plant components, which need to
be considered on the basis of a risk analysis. The operator is
responsible for the production of the risk analysis and for
compliance with the resulting precautionary measures and
regional safety regulations.
The document contains fundamental safety information that
must be observed during commissioning, operation and
maintenance. Non-compliance with these instructions may
cause:
•Personal hazard due to electrical, mechanical and chemical
effects.
•Hazard to nearby equipment.
•Failure of important functions.
•Hazard to the environment due to the leakage of dangerous
materials.
The safety information does not take into account:
•Unexpected incidents and events, which may occur during
installation, operation and maintenance.
•Local safety regulations which must be adhered to by the
operator and by any additional installation personnel.
Prior to commissioning:
1. Transport and store the product correctly.
2. Do not paint the bolts and plastic parts of the product.
3. Carry out installation and commissioning using trained
personnel.
4. Provide adequate training for installation and operating
personnel.
5. Ensure that the contents of the document have been fully
understood by the responsible personnel.
6. Define the areas of responsibility.
7. Observe the safety data sheets.
8. Observe the safety regulations for the media used.
During operation:
9. Keep this document available at the place of use.
10. Observe the safety information.
11. Operate the product in accordance with this document.
12. Operate the product in accordance with the specifica-
tions.
13. Maintain the product correctly.
14. Do not carry out any maintenance work and repairs not
described in this document without consulting the manu-
facturer first.
In cases of uncertainty:
15. Consult the nearest GEMÜ sales office.
3 Product description
3.1 Construction
Item Name Materials
1 Optical position indic-
ator
2 Actuator
3 Distance piece with
leak detection hole
1.4305 / 1.4408
4 Valve body ASTM A 351 CF3M, in-
vestment casting
3.2 Description
The GEMÜ 566 2/2-way straight seat control valve has a
body with an integrated control mechanism. Manual, pneu-
matic and motorized actuator types are available. The GEMÜ
566 valve was specially developed for controlling small
quantities and allows flow rates from 63 l/h to 2500 l/h.
4 Correct use
DANGER
Danger of explosion
▶Risk of death or severe injury.
●Do not use the product in potentially
explosive zones.
WARNING
Improper use of the product
▶Risk of severe injury or death.
▶Manufacturer liability and guarantee will be void.
●Only use the product in accordance with the operating
conditions specified in the contract documentation and
in this document.
The product is designed for installation in piping systems
and for controlling a working medium.
The product is not intended for use in potentially explosive
areas.
●Use the product in accordance with the technical data.
4 Correct use