Dorot S100 PR/ES Series Cast Iron Basic Pressure Sustaining/Electric 24AC Solenoid Valves with 3-Way Selector

The Dorot S100 PR/ES Series combines hydraulic pressure sustaining control with 24V AC electric solenoid actuation, designed to regulate minimum upstream pressure while enabling remote flow shut-off or activation. Built on the trusted S100 diaphragm-operated cast iron valve platform, this model is ideal for use in filtration stations, pump outlets, irrigation manifolds, and pressure-sensitive network segments.

The integrated 3-Way Pressure Selector allows operators to manually switch between automatic, manual open, or manual closed modes—providing complete control flexibility during commissioning, servicing, or emergencies.

The pressure-sustaining pilot ensures upstream pressure is maintained at a preset threshold, preventing pump cavitation and ensuring stable operation of upstream devices. The 24V AC solenoid integrates seamlessly with irrigation controllers and automation systems, enabling timed or event-triggered On/Off operation.

FEATURES

• Function: Combined Pressure Sustaining + Electric On/Off
  
• Body Type: Straight Pattern
• Available Sizes: DN100 to DN250 (4" – 10")
  
• Max Fluid Temperature: 60°C (140°F)
• End Connections: Flanged
• Body Material: Cast Iron 
• Bonnet: Cast Iron 
• Diaphragm: Reinforced Natural Rubber (optional: NBR, EPDM, Neoprene)
• Spring: Stainless Steel 302 
• Coating: Polyester Epoxy, Rubber, or Nylon
• Manual Override: Integrated into Aquative DC module

BENEFITS

• Maintains minimum upstream pressure to protect pumps and filters
• Remote electric control allows for automation and integration with irrigation systems
• Manual override provides reliable local operation in power-out or service conditions
• Dual-function design eliminates the need for separate sustaining and shut-off valves
• Rugged cast iron construction with long-lasting internal components
• Ideal for irrigation zones, filter banks, and pump-driven lines