Pitch valve

The utility model provides a pitch valve of relating to the carbon element production field, pitch valve contain pitch valve body and heating jacket, pitch valve body outside have the spaced to correspond the cover to establish a heating jacket, the upper and lower both ends of this heating jacket are respectively through bolt and the flange joint that is fixed in both ends about the pitch valve body, the heating jacket is equipped with the intermediate layer that is used for the heat -conducting medium circulation, and one side of heating jacket bottom is equipped with heat -conducting medium's import, the top of opposite side is equipped with heat -conducting medium's export, pitch valve not only can effectually avoid its case to be blockked up, but also the maintenance of can being convenient for overhaul. 种涉及碳素生产领域的沥青阀，所述的沥青阀包含沥青阀本体和加热套；所述的沥青阀本体外部有间隔的对应套设加热套，该加热套的上下两端分别通过螺栓与固定于沥青阀本体上下两端的法兰连接，加热套设有用于导热介质流通的夹层，且加热套的侧底部设有导热介质的进口，另侧的顶部设有导热介质的出口；所述的沥青阀不但能够有效的避免其阀芯被堵塞，而且还能够便于进行检修维护。