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Series 300 Basic Hydraulic Valves



Dorot Series 300 are automatic, hydraulically actuated, diaphragm operated, globe and angle pattern control valves. The valves are designed for use in fire protection applications, including deluge, pre-action, pressure control, water, foam and seawater fire protection systems. The valves consist of three major components: the body, the cover, and the internal diaphragm assembly.

  • Dorot UL listed basic untrimmed valve models: 30U, 30CU, 30AU


  • UL-listed with a wide range of control trims
  • Fast opening and soft closure operation
  • Drip-tight hermetic shut off to ANSI FCI 70-2
  • Simple and reliable design
  • Easy installation and maintenance
  • Double or single chamber
  • High-grade construction materials
  • Reliable pressure control from near zero flow
  • Low pressure losses at high flow rates

Optional Features

  • Local or remote reset
  • Manual, Electric, Hydraulic, Pneumatic and Pneu-electric UL-listed control trims
  • Explosion-proof, SIL redundant solenoids & trim accesories
  • Sea water service


Download Fire Protection Catalog

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