A three-bar type cut-off butterfly valve has a valve body and a configured valve plate and a main shaft penetrating through the valve body. The main shaft is equipped with an active rod connected with a front-end distribution pin and a valve plate central support plate and symmetrically arranged on both sides of the active rod The rear end of the fixed rod is hinged with the valve body, the front end of the fixed rod is connected with the driven rod by the pin shaft, the other end of the driven rod is connected with the valve plate side support plate by the pin shaft, The packing seal structure is provided with a spindle bearing on the outer side of the sealing structure, and a drive device composed of a hydraulic cylinder and a crank is arranged on one side of the valve body. The butterfly valve utilizes the principle of four-bar linkage to realize opening and closing, the valve plate is made to move without friction during contact and release from the sealing stop, and the valve has long service life. The assembly of high temperature self-lubricating bearings at each hinge point in the rod system ensures that high- Under the condition of flexible operation without jamming; seal set to seal the mouth of soft and hard double sealed form, reliable sealing; valve configuration access port for easy maintenance and repair.
Single Cold Faucet,Kitchen Unstacking Faucet,Sink Wall Mounted Faucet,Concealed Wall Mounted Faucet
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