*Cartridge for old style "SB" 203 Boom - 1/4"

Model ESB Swivel Boom is ideal for heavy commercial use in coin-operated car washes, service bays and in car and truck fleet cleaning departments. The boom permits 360° of free and easy swivel rotation around a vehicle in an 11 foot diameter. Heavy gauge all steel mounting base, non-corrosive metal internal parts and double ram ball bearings for effortless boom swing. Boom length is 5 or 8 feet. Pressures to 3000 psi. Extensions are also available.

FEATURES:

• All internal parts made of non-corrosive metals
  
• Heavy gauge, all steel mounting base
  
• Rubber seals prevent moisture from entering bearings
  
• Screw securely locks boom arm
  
• Twin compression springs in suspension mechanism. Springs are tension adjustable for easy up/down motion allowing for a variety of hose and gun weights.
  
• Swivel rotates 360°
  
• Double row ball bearings in swivel cartridge for effortless boom swing
  
• Second O-Ring prevents grease from contaminating car wash detergent O-Ring, prolonging life of the seal
  
• High-strength, one-piece
  
• 1/8" thick boom carrier
  

Auto Return Feature can be used on 204 & 206 Models. (Boom springs back to predetermined location.)
Note: Zierden swivels should use Sil Glyde silicon base grease for maintenance.
Using other lubricants might cause seal failure.