Runner with a heated central element or valve, or a heated outer surface with a central valve.
Annular runners can be used in the hot manifold, but most commonly are used in the hot drop, or in a valve gate.
Runner with a heated central element or valve, or a heated outer surface with a central valve.
Annular runners can be used in the hot manifold, but most commonly are used in the hot drop, or in a valve gate.