Suttner ST-2320 Soft Wash Gun

Tackle demanding commercial roof cleaning and building soft wash jobs with the Suttner ST-2320 Soft Wash Spray Gun. Engineered specifically for low-pressure chemical application, this heavy-duty spray gun features a full 1/2" stainless steel internal fluid path that delivers maximum volume while completely resisting sodium hypochlorite (bleach), aggressive surfactants, and mild acid solutions.

Built to support high-flow soft wash systems—including 12V/24V pumps, gas-powered diaphragm rigs, and air-diaphragm (AODD) pumps—the ST-2320 handles flow rates up to 21 GPM with minimal pressure drop. Its ergonomic, easy-pull trigger design reduces hand fatigue during long wash days, while the impact-resistant plastic casing protects internal components from drops and site abuse.

Key Features & Benefits

• 100% Stainless Steel Fluid Path: Internal ball, seat, and fluid passage are forged from high-grade stainless steel to resist corrosion from bleach, chlorine, and harsh chemicals.

• Full 1/2" High-Flow Design: 1/2" FPT inlet and outlet ports eliminate flow restriction, maximizing vertical reach for roof spraying and large commercial walls.

• Rated Up to 21 GPM: Engineered to support high-volume delivery pumps without choking fluid output or creating excessive backpressure.

• Ergonomic Low-Trigger Pull: Reduces hand strain and operator fatigue during continuous all-day spraying.

• Durable Impact-Resistant Housing: Heavy-duty outer casing shields the internal valve assembly from drops, bumps, and harsh job site environments.

Common Applications

• Commercial & Residential Roof Soft Washing

• High-Volume Building Siding & Stucco Cleaning

• Chemical Application via 12V, Gas Diaphragm, or Air-Diaphragm (AODD) Systems

• Agricultural & Industrial Washdown

Specifications

• Model: Suttner ST-2320

• Maximum Pressure: 1,000 PSI

• Maximum Flow Rate: 21.0 GPM

• Maximum Temperature: 300°F

• Inlet Port: 1/2" Female NPT (FPT)

• Outlet Port: 1/2" Female NPT (FPT)

• Material: Stainless Steel Internal Components / Impact Poly Housing

Pro Tip: Pair the 1/2" outlet with a 1/2" male quick-connect coupler or 1/2" x 1/4" reducer bushing so you can easily attach your soft wash lances or J-rod nozzle assemblies!