Anest Iwata WS-Primer(Filler)1.8 Primer Gun The WS-PRIMER Filler is a dedicated spray gun from Anest Iwata, purpose-built for high-build primer (filler) applications. It’s engineered to handle thick, high-viscosity primer materials with precision, giving a high-quality, even lay-down while minimizing overuse of material and reducing the effort needed for sanding. Key Features & Benefits Split Nozzle™ Technology The gun uses Iwata’s Split Nozzle™ System, which channels airflow through three separate slots. This design improves atomisation even at lower pressures, producing their signature flat-oval fan pattern — ideal for consistent coverage and reduced material waste. Self-Adjusting Needle Packing The needle packing is designed to auto-adjust, which removes the guesswork when setting it up. Just tighten, and it calibrates itself. This feature also helps reduce maintenance time and ensures a reliable seal. Durable Air Valve Seat The air valve seat is made from aluminium and sealed with a solvent-resistant O-ring, making it robust and long lasting. This “bullet-proof” design resists over-tightening and holds up well to frequent use. Optimised for Filler / High-Build Primer Specifically configured to apply high-build fillers: this version is not just for thin surfacers but for “filler application.” Helps achieve flat, even material lay-down, which leads to smoother surfaces and less effort sanding after cure. According to Iwata: fewer abrasives are needed (less sanding) — saving on consumables. Ergonomic & Maintenance-Friendly Design Ergonomically shaped handle and trigger for painter comfort. Easy to disassemble / clean: the manual provides clear steps for disassembling the air cap, fluid nozzle and needle. Designed to minimize downtime during cleaning and part replacement. Identification / Visual Cues The filler version has distinctive black adjusters and air cap, which differentiates it from other WS-PRIMER variants (such as Wet-on-Wet). Air / Pressure Specs (per filler-model data) Recommended working pressure: 2.0 bar (≈ 29 psi) Air consumption: ~ 370 Nl/min for the filler version. Gravity-feed design: cup feeds material from the top.
