Dorot S100 PS Series Cast Iron Basic Hydraulic High Pressure Sustaining Valves with Pressure Differential Pilot

The Dorot S100 PS Series High Pressure Sustaining Valve with Pressure Differential Pilot is a heavy-duty, diaphragm-actuated hydraulic valve engineered to maintain a minimum upstream pressure in high-pressure irrigation, municipal, and industrial water systems. Built on Dorot’s robust S100 cast iron valve body, this version is designed to handle elevated system pressures and sudden flow changes—protecting pumps, filters, and upstream networks from pressure loss or hydraulic collapse.

Equipped with a Pressure Differential Pilot, the valve senses upstream pressure and reacts instantly when it drops below a preset threshold—modulating or closing the valve to sustain the desired pressure. This ensures constant operating conditions for critical components, especially in systems prone to variable demand or elevation changes.

Ideal for pump discharge protection, filtration heads, and mainline balancing, this valve offers precision control, low maintenance, and long-lasting performance even under tough hydraulic conditions.

FEATURES

• Function: Hydraulic Pressure Reducing (High Pressure Version)
• Control System: Pilot-operated with reinforced 8mm nylon tubing
• Body Type: Straight Pattern
• Available Sizes: DN80 to DN150 (3" – 8")
  
• 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 stable upstream pressure to protect pumps, filters, and infrastructure
• Pressure Differential Pilot offers fast, accurate response to pressure drops
• High pressure design supports demanding system requirements
• Fully hydraulic—no electrical power needed
• Durable cast iron construction with corrosion-resistant coating
• Ideal for mainline control, high-pressure irrigation systems, and industrial applications
• Simple in-line maintenance with long service intervals