Suttner ST-601 Inline Trigger Gun is a direct replacement gun for all Whisper Wash models excluding the Hippo line. 
 
Features
• High Quality, German engineered components
• Horizontal flow-through design
• Forged brass housing for maximum strength
• Unitized valve for easy repair
• Stainless steel spring, needle, ball, and seat for chemical resistance
• Special heat and chemical resistant seals for optimum performance even in the harshest of environments

Specifications
• Max Pressure: 4,000 PSI
• Max Flow: 12.0 GPM
• Max Temp: 320° F.
• Inlet: 3/8" Female NPT
• Outlet: 1/4" Female NPT
• Weight: 1.16 lb