OPERATION AND MAINTENANCE MANUAL
12-2015
4
thinner bolts. Such a connection enables breakage of hydrant without damaging it and resulting water outflow.
Special flanges enable free rotation of the ground part of the hydrant from 0° to 360°. There is a special
articulation spindle inside the hydrant, in the connection area of the above ground and underground part of the
hydrant. The rotating stem is seated in a stopper with rubber sealing rings. Rotate the hydrant clockwise to close
the flow. Poppet moves during rotation of the stem and flow opens. The poppet's movement closes the water
draining device's outlet opening. When closing a hydrant, the poppet lands in the seat and the water remaining in
the hydrant's column using draining valve.
With this type of hydrant, it is possible to replace the complete internal equipment of a hydrant without cutting
off the supply thanks to a ball valve.