Abstract: A method for producing a porous glass fine particle body includes: a first layer formation step of continuously forming in a longitudinal direction of a rotating starting base material without a break, a first soot layer on a surface of the rotating starting base material; and an second layer formation step of forming second soot layers on an outside of the first soot layer while supplying a raw material gas to each of a burner among burners of a burner group and moving the burner group in a reciprocating manner in the longitudinal direction relative to the rotating starting base material. The burner group and the starting base material move relatively to each other along the longitudinal direction.

Abstract: A method for manufacturing a porous glass fine particle body including: forming a deposit layer of glass fine particles, generated from raw material gas including a silicon-containing organic compound, on a rotary starting member; supplying the raw material gas to a burner; switching the raw material gas to purge gas; supplying the purge gas to the burner at a first flow rate when the raw material gas is discharged from inside the burner; and switching the first flow rate to a second flow rate smaller than the first flow rate.

Abstract: Embodiments of the invention provide a tank assembly with a main housing enclosing an inner volume, and an outlet section positioned extending from one end of the main housing that includes a front cavity with an outlet volume and an adjacent outlet channel. Some embodiments include at least one removable filter configured to be inserted at least partially into main housing forming at least a filtered volume and a fluidly coupled main volume. Some embodiments include a removable tank baffle including at least one central channel and a plurality of baffle apertures. In some embodiments, the central channel is configured to be fluidly coupled to the outlet channel when the removable tank baffle is positioned in the main housing. Further, the plurality of baffle apertures are configured to be fluidly coupled to the outlet volume when the removable tank baffle is positioned in the main housing.

Abstract: A method for producing a porous glass fine particle body includes: a first layer formation step of continuously forming in a longitudinal direction of a rotating starting base material without a break, a first soot layer on a surface of the rotating starting base material; and an second layer formation step of forming second soot layers on an outside of the first soot layer while supplying a raw material gas to each of a burner among burners of a burner group and moving the burner group in a reciprocating manner in the longitudinal direction relative to the rotating starting base material. The burner group and the starting base material move relatively to each other along the longitudinal direction.

Abstract: Embodiments of the invention provide a tank assembly with a main housing enclosing an inner volume, and an outlet section positioned extending from one end of the main housing that includes a front cavity with an outlet volume and an adjacent outlet channel. Some embodiments include at least one removable filter configured to be inserted at least partially into main housing forming at least a filtered volume and a fluidly coupled main volume. Some embodiments include a removable tank baffle including at least one central channel and a plurality of baffle apertures. In some embodiments, the central channel is configured to be fluidly coupled to the outlet channel when the removable tank baffle is positioned in the main housing. Further, the plurality of baffle apertures are configured to be fluidly coupled to the outlet volume when the removable tank baffle is positioned in the main housing.

Abstract: A method for manufacturing a porous glass fine particle body including: forming a deposit layer of glass fine particles, generated from raw material gas including a silicon-containing organic compound, on a rotary starting member; supplying the raw material gas to a burner; switching the raw material gas to purge gas; supplying the purge gas to the burner at a first flow rate when the raw material gas is discharged from inside the burner; and switching the first flow rate to a second flow rate smaller than the first flow rate.