Klafftilbakeslag i seigjern, opsjon vektarm med lodd.
Check valve with internal hinge pin or hinge pin with weight-loaded
lever and protective guard. For water and sewage in plants, buildings
and valve chambers.
* Degree of opening of 93% to extremely low zeta value
* Self-centering valve disc through spherical bearing pin,
therefore always tight closure
* Medium-free shaft bearing for permanent easy running
* Transparent plastic protective cage in the pivoting area of the
lever and weight to protect against unintentional contact
* Also for potable water