Hollow poppet valve and manufacturing method thereof

A poppet valve, in particular a hollow poppet valve, comprising: a valve stem; the valve body is provided with a first end along the longitudinal axis, the first end is provided with a neck part, the valve rod is coaxially arranged with the neck part, the valve body is provided with a second end along the longitudinal axis, the second end is provided with a first outer contact face part, and the valve body comprises a cavity. The cavity is provided with a first opening facing the first end and a second opening facing the second end; and a bonnet arranged on the second end coaxially with the valve body for closing the second opening, the bonnet having a second outer contact surface portion forming a valve head contact surface together with the first outer contact surface portion. 一种提升阀，具体地是中空提升阀，包括：阀杆；阀体，该阀体具有沿着纵向轴线的第一端，该第一端具有颈部部分，阀杆与颈部部分同轴地布置，并且阀体具有沿着纵向轴线的第二端，该第二端具有第一外接触面部分，其中，阀体包括腔体，该腔体具有朝向第一端的第一开口和朝向第二端的第二开口；以及阀盖，该阀盖在第二端上与阀体同轴地布置以用于封闭第二开口，阀盖具有与第一外接触面部分一起形成阀头部接触面的第二外接触面部分。