Fluid valve and flame gun

The fluid valve comprises a valve body, the valve body is provided with a valve element hole communicated with an internal flow channel in a crossed mode, and the inner end of the valve element hole is stopped in the valve body and provided with an internal thread section; the valve element shaft is provided with an external thread section and a sealing section, the external thread section is in threaded connection with the internal thread section, and the external thread section moves on the internal thread section to control the on-off state of the internal flow channel. The fluid valve is simple and reasonable in structure, small in size and convenient to install, use and maintain, when the fluid valve is used for the flame gun, the fluid flow can be conveniently and accurately controlled, the working efficiency of the flame gun is improved, the flame gun achieves liquid fuel injection combustion through gas-liquid mixing and atomization, the liquid fuel atomization effect is good, and the flame gun is con