Dorot S100 PR Series Cast Iron Basic Hydraulic Pressure Reducing Valves with Galit Polymetric Relay Valve

The Dorot S100 PR Series is a pilot-operated hydraulic pressure reducing valve designed to automatically maintain a constant downstream pressure, regardless of upstream fluctuations. Combined with the Galit 3-Way Polymeric Relay Valve, this configuration enhances system responsiveness and control precision—making it ideal for irrigation systems, filtration stations, and municipal water supply lines.

The Galit relay is a compact, 3-way hydraulically actuated diaphragm valve made from corrosion-resistant polymer materials. It accelerates the main valve’s response time, improves modulation accuracy, and supports operation under variable elevation and line pressure conditions. The integrated Galit valve includes a 3-position manual override and can be configured as either normally open (N.O.) or normally closed (N.C.), depending on the system’s control logic.

This valve assembly is engineered for performance in harsh environments, offering fast hydraulic reaction, low maintenance, and reliable modulation using only line pressure—no external power required.

FEATURES

• Function: Hydraulic Pressure Reducing
• Body Style: Globe-pattern (inline flow)
• Available Sizes: DN50 to DN150 (1" – 6")
  
• Max Fluid Temperature: 60°C (140°F)
• End Connections: Threaded, 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
• Relay Valve Manual Override: Built-in 3-position selector

BENEFITS

• Maintains steady outlet pressure for zone and system protection
• Galit relay improves response speed and pressure stability
• Corrosion- and UV-resistant polymer relay valve suitable for outdoor use
• Built-in manual override for both main and relay valves
• Compact, modular components for easy integration and servicing
• No external power source required—fully hydraulic operation
• Ideal for systems with topographic pressure variations or long hydraulic lines