Dorot S100 B Series Cast Iron Basic Hydraulic Valves with 3-Way Selector

The Dorot S100 B Series with 3-Way Selector is a robust hydraulic valve designed for flexible and reliable flow control in irrigation networks, filtration systems, and water distribution applications. Incorporating a manually operated 3-way selector, this version allows the user to easily switch between automatic, manual open, and manual close modes—providing full control over valve operation in the field, even without external pilot or electric input.

Constructed from high-strength cast iron and built around Dorot’s proven direct-sealing diaphragm technology, the S100 B 3-Way valve delivers exceptional flow capacity with minimal head loss. The only moving part is the diaphragm, which reduces wear and simplifies maintenance—making this valve an ideal choice for long-term, trouble-free service in demanding agricultural and industrial environments.

Available in both inline (globe) and angle-pattern bodies, this valve combines mechanical durability with user-friendly operation for flexible system design and control.

FEATURES

• Function: Hydraulic On/Off Control with Manual 3-Way Selector
• Body Design: Straight body for compact installation and reduced pressure loss
• Available Sizes: DN50 to DN150 (2" – 6")
  
• Control Chamber Volume: 70 cc to 1800 cc depending on size
• 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

• Built-in 3-way selector for easy manual override and field control
• No electrical power required for switching between modes
• Direct-sealing diaphragm ensures tight shut-off and minimal leakage
• Outstanding flow rates with ultra-low head losses
• Heavy-duty cast iron construction for durability in harsh environments
• Maintenance-friendly design with no internal shafts or seals
• Suitable for open-field irrigation, filtration systems, and remote water delivery points