Groove butterfly valve using worm gear, worm drive, with the cam rotation according to the predetermined location of the signal device on the contact pressure or release, the corresponding "output" " Broken" electrical signals, display butterfly valve of the opening and closing state, groove butterfly valve is divided into the handle Groove butterfly valve and turbine groove butterfly valve Two, the use of attention is:
1. Butterfly valve can be installed in the space of arbitrary location pipe.
2. This butterfly valve installation position should guarantee the use, the maintenance and the replacement convenience.
3. Groove Butterfly valve Installation can not take into account the direction of pipeline media flow, that is, allow two-way flow.
4. Butterfly valve installation should be stored in the indoor dry place, the valve plate slightly open 4°~5°.