Pressure Feed Spray Guns

What Is a Pressure Feed Spray Gun?

A pressure-feed spray gun separates the fluid supply from the gun body. Coating is held in a remote pressure pot (typically 2–20 litres) and pushed to the gun under regulated air pressure — typically 5–30 psi fluid pressure — through a fluid hose. The gun itself handles only atomisation, with fluid arriving at the nozzle under positive pressure regardless of gun orientation. This design is essential for high-viscosity materials, continuous production, and any application where the gun must be held at unusual angles without loss of fluid flow.

LIS pressure-feed guns are used extensively in industrial coating lines, two-component (2K) mixing systems, and robotic spray applications. The remote-pot design also supports continuous material replenishment — an operator can refill the pot without stopping the spray cycle, which is a significant productivity advantage in high-throughput environments.

When to Choose Pressure Feed Over Gravity or Suction Feed

Choose pressure feed when: the material viscosity is too high for gravity or suction draw; the production rate demands more material than a cup can hold; the gun must operate inverted or overhead; or when two-component materials require in-line mixing before the nozzle. For most automotive refinish and furniture finishing, gravity-feed HVLP is adequate — pressure feed is the production professional's tool.