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Daniel, CV500 Control Valve Series ATO Model
Daniel™ Series 500 Control Valves are an ideal solution for tank safety, remote on-off control, bypass control and other applications requiring extremely low pressure drop.
Rather than using the flowing stream as a power source, the valves are designed with a spring-biased power cylinder that operates at 30 psi (207 kPa) minimum for full stroke and are limited to maximum pressure of 150 psi (1034 kPa). This power cylinder can be operated pneumatically or hydraulically using electric, pneumatic or hydraulic pilot valves. An aggressive-products option is available for additives or oxygenates that create challenging conditions, including alcohols, MTBE, TAME and reformulated fuels.
Daniel, CV500 Control Valve Series ATO Model


Line Sizes
DN50 to DN300 (2-in to 12-in)
Fluid Type
Operating Temperature Range
-29°C to +66°C (-20°F to +150°F)
Operating Pressure Range
ANSI 150 to 300
Materials: Valve Body
Carbon Steel, ASTM A352 GR LCC
Materials: Pilot Body
Standard: Stainless Steel
Materials: Valve Piston
Standard: Stainless Steel
Materials: O-Rings
Standard: Viton; Optional: Neoprene, EPR, Nitrile, Viton GFLT, Kalrez / Teflon AP (Aggressive Products)


  • Achieve precise flow rate and batch control with high-performance balanced piston principle, spring-biased design
  • Choose from models for tank control, remote on-off control, bypass control, and two-stage or digital batch control
  • Ensure smooth linear action with maximum flow and minimum pressure drop with high-capacity, 45° valve body
  • Safeguard equipment and personnel with positive shutoff (ANSI Class VI) and fail-safe closure upon power loss
  • Prevent mixing of line fluid and power cylinder operating fluid with an atmospheric vent
  • Maximize uptime with all internal parts housed in a cartridge assembly; no need to remove the valve from the line
  • Minimize wear-related maintenance with a simple design featuring no diaphragms or stuffing boxes