Dorot S100 PS Series Cast Iron Basic Hydraulic Pressure Sustaining Angle Valves with 3-Way Selector

The Dorot S100 PS Series Cast Iron Angle Valve with 3-Way Pressure Selector is a robust and accurate hydraulic valve designed to maintain a minimum upstream pressure in water distribution and irrigation systems. By ensuring adequate backpressure, the valve protects upstream pumps, filters, and mainlines from collapse or underperformance during fluctuating demand.

Featuring a space-saving angle-pattern body, this version simplifies piping layouts and reduces pressure loss, making it ideal for installations with limited space. The integrated 3-way selector offers effortless mode switching—automatic, manual open, or manual closed—without tools or system shutdown, enhancing field operability during servicing, start-up, or emergencies.

Controlled via a pressure-sustaining pilot, the valve responds to upstream pressure changes by modulating its opening position to maintain a preset threshold. Built with Dorot’s proven diaphragm-actuated technology, it delivers smooth modulation, tight sealing, and long-lasting performance in challenging environments.

FEATURES

• Function: Hydraulic Pressure Reducing
• Body Style: Globe-pattern (inline flow)
• Available Sizes: DN80 (3")
  
• 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 upstream pressure for system protection
• Integrated 3-way selector for fast, tool-free manual override
• Angle design optimizes hydraulic performance and simplifies installation
• High flow capacity with minimal head loss
• Proven diaphragm-actuated control for reliability and ease of maintenance
• Ideal for use in filter banks, pump outlets, remote blocks, and mainline balancing