Install threaded pipe union pump
WARNING
![warning](../safety/heat_hot_surface_warning.jpg)
Hot surface!
The pipes might be hot. There is a risk of injury due to burns.
- Wear protective gloves.
Installation steps
1. Install suitable threaded pipe unions.
![Closing shut-off devices](../Images/jpg/191083531__Web.jpg)
2. Close the shut-off devices in front of and behind the pump.
![Pump installation](../Images/jpg/191090187__Web.jpg)
3. Insert the pump into the pipe together with the supplied flat gaskets. Observe direction of flow! The arrow-shaped flow indicator on the pump housing must point in the direction of flow.
4. Screw together the pump with the union nuts. To do so, use a pipe wrench to hold it up against the pump housing.
![Opening shut-off devices](../Images/jpg/191101323__Web.jpg)
5. Open the shut-off devices in front of and behind the pump.
6. Check impermeability.