Dorot S100 PR Cast Iron Basic Hydraulic Pressure Reducing Valve with 3-Way Pressure Selector Valve

The Dorot S100 PR Series with 3-Way Pressure Selector Valve is a robust and reliable cast iron hydraulic pressure reducing valve designed to maintain a constant downstream pressure regardless of upstream fluctuations. Engineered for precise control in irrigation systems, filtration banks, pump stations, and municipal water supply networks, this valve ensures downstream protection and efficient water delivery.

Equipped with a 3-way pressure selector valve, the S100 PR provides full operational flexibility—allowing users to manually override valve operation by choosing between automatic, manual open, or manual closed modes. This integrated feature simplifies commissioning, testing, and maintenance without the need for disassembly or additional tools.

Built on Dorot’s proven diaphragm-actuated design, the S100 PR ensures tight sealing, low head loss, and consistent modulation performance even in systems with varying flow rates and poor water quality.

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

BENEFITS

• Maintains stable downstream pressure, preventing overpressure damage
• Integrated 3-way selector enables quick field override without tools
• Direct-sealing diaphragm ensures smooth, accurate modulation
• Corrosion-resistant cast iron body with optional high-pressure ratings
• Compact inline design minimizes footprint and simplifies system layout
• Compatible with Dorot pilot systems and suitable for open-field, greenhouse, and municipal applications
• Designed for easy in-line servicing with minimal downtime