Portable vaporizing device, cartridge and methods

A portable vaporizing device comprising:

• a vaporizable product receiving chamber configured to receive a vaporizable product therein, the vaporizable product receiving chamber comprising one or more chamber walls defining an product flow path between upper and lower opposing ends of the vaporizable product receiving chamber;
• a heat transfer element extending at least partly along the product flow path, and configured to transfer heat to vaporizable product received in the product receiving chamber to at least partially melt and/or reduce the viscosity of vaporizable product as it flows via gravitational pull from the upper end to the lower end along the product flow path;
• and
• a porous valve element located towards the lower end of the vaporizable product receiving chamber, the porous valve element comprising:
• a porous valve body comprising porous material configured to allow heated vaporizable product having a predetermined viscosity to pass therethrough;
• at least one first porous entry surface of the porous valve body configured to receive the heated vaporizable product from the product flow path into the porous valve body;
• and
• at least one porous vaporizing surface of the porous valve body configured to flow the heated vaporizable product out of the porous valve body,
• wherein the heat transfer element and porous valve element are configured to be placed in thermal contact with at least one heating element to provide heating of the heat transfer element and porous valve element during operation of the portable vaporizing device to heat the vaporizable product to the predetermined viscosity,
• wherein the porous valve element is configured to be heated by the at least one heating element to cause the heated vaporizable product having the predetermined viscosity from the product receiving chamber to flow into and through the porous valve body, and to cause the heated vaporizable product to at least partially vaporize in the vicinity of the at least one porous vaporizing surface while exiting the porous valve body, and
• wherein the porous valve body comprises a thermal conductivity of at least 0.5 W/m*K to retain and transfer heat to the vaporizable product.