Collection: Iwata WS-400 Spray Guns & Parts

Which Iwata WS-400 do I have? · Versions, parts diagrams & manuals

Iwata's spec sheets carry the exploded parts diagram (Ref. numbers) and the nozzle/needle and air cap sets for each version; the operation manuals cover setup and maintenance. Match the model stamped on your gun, then find the Ref. number on the diagram.

Version	Iwata documents (PDF)
WS-400 SERIES 2 BASE	Spec sheet & parts diagram (01/2024)
WS-400 SERIES 2 CLEAR	Spec sheet & parts diagram (01/2024)
WS-400 SUPERNOVA EVOTECH	Spec sheet & parts diagram (01/2024) Operation & parts manual (01/2024)

Date = Iwata's document revision. Links open the PDF on anestiwataamericas.com. Need help identifying your gun? Call (888) 714-1410.

About Iwata WS-400 Spray Guns & Parts · 90 products · Buying guide & FAQ

Shop Iwata WS-400 (often searched as Iwata WS400) gravity-feed HVLP/compliant spray guns, plus the nozzle/needle sets, air caps and repair parts listed in Iwata's WS-400 spec sheets. Iwata describes the WS-400 Series 2 Base as ideal for wet on wet basecoat and the WS-400 Series 2 Clear as suited to a wide range of clearcoat work. Iwata also states these guns meet EPA NESHAP 40 CFR, Part 63 Subpart 6H. Not sure which code you need? Call 888-714-1410.

Choosing a nozzle size and air cap

Each Iwata nozzle size is sold as a nozzle/needle set, and each family uses its own air cap set:

WS-400 Series 2 Base (air cap sets 93008310 for WS-400-02-OBS and 93018140 for WS-400-03-BF): The OBS setups are for Type A wet on wet application and the BF setups are for Type B wet on wet application. Nozzle/needle sets are 1.3 OBS-0 (93008930, humid climate), 1.3 OBS (93008340, standard), 1.3 OBS+1 (93008990, dry), BF-S (93018150, standard) and BF-40 (93021390, hot & dry/extreme). Iwata's standard climate range is 59-86° F (15-30°C) at 30%-75% RH.
WS-400 Series 2 Clear (air cap set WS-400-03, 93009030): These are high delivery (HD) nozzle/needle sets: 1.2 HD Control (93009140), 1.3 HD Standard (93009060), 1.4 HD Speed (93009160) and 1.5 HD High Speed (93009180). Iwata lists fluid flow from 220 mℓ/min (1.2 HD) to 280 mℓ/min (1.5 HD).
WS-400HD Supernova (air cap set WS-400-01, 93505300): Nozzle sizes are 1.2HD, 1.3 (OBS), 1.3HD, 1.4HD and 1.5HD. Iwata calls it the standard for clear coats.

Finding the right replacement part

Open the exploded diagram in the Iwata spec sheet for your gun family and find the part's Ref. number, such as 7 for the air valve seat assy, 8 for the air valve, 11 for the fluid needle spring assy or 16 for the trigger. Then match the Iwata code beside that Ref. number to the code on our listing. Codes differ between families. For example, the Ref. 6 pattern adjust knob is 93008140 (blue)