ST-601 Whisper Wash Replacement Spray Gun – 4000 PSI

The Suttner ST-601 Whisper Wash Replacement Spray Gun is the professional’s choice for surface cleaner and pressure washer systems. Engineered by Suttner Germany and trusted by Whisper Wash for their premium surface cleaner assemblies, the ST-601 delivers exceptional reliability, comfort, and control.

Built to handle up to 4000 PSI, this replacement spray gun is designed specifically for use with Whisper Wash Classic, Maxima, Ground Force, Ultra Clean, and Big Guy surface cleaners. Its ergonomic handle and stainless-steel internals ensure smooth operation and long service life under continuous high-pressure use.

The ST-601 is a direct replacement gun that connects easily to existing Whisper Wash trigger handle assemblies—making it a quick, reliable upgrade or replacement for worn or leaking spray guns.

Features & Specifications:

• Model: ST-601

• Manufacturer: Suttner

• Max Pressure: 4000 PSI

• Max Flow Rate: 12 GPM

• Max Temperature: 300°F

• Inlet: 3/8" FNPT

• Outlet: 1/4" FNPT

• Construction: Impact-resistant composite housing with stainless-steel internals

• Ergonomic Handle: Designed for comfort and control during extended use

• Compatibility: Direct replacement for Whisper Wash surface cleaners

• Applications: Surface cleaners, pressure washing, commercial and industrial cleaning

Key Benefits:

• OEM replacement for Whisper Wash surface cleaners

• German-engineered for precision and durability

• Handles up to 4000 PSI for powerful, consistent cleaning

• Comfortable ergonomic trigger minimizes fatigue

• Durable and corrosion-resistant design for long-term reliability