The Daniel 700 Series Model 770 is a precision pilot-operated differential control valve for UK oil & gas and industrial applications, engineered to maintain a controlled pressure differential within ±2% regardless of upstream or downstream pressure fluctuations.
Designed with balanced, single-seated pilots with large ports and operable on a low differential from 5 psi (34.5 kPa), this valve delivers high-capacity linear pressure differential control with minimal pressure drop and fast response. Its smooth linear valve action and balanced piston design ensure reliable operation in demanding pipeline pressure regulation, pump differential pressure control, vapor pressure systems and other process control applications.
Built with a 45° high-capacity valve body, positive ANSI Class VI shut-off, fail-safe closure and a modular cartridge assembly that simplifies maintenance, the Model 770 offers dependable performance for UK terminals, refineries and industrial distribution systems where precise differential pressure management is essential.
- Achieve precise flow rate and batch control with high-performance balanced piston principle, spring-biased design
- Avoid damage due to shock pressure by adjusting closing speed; main piston ensures uniform opening and closing
- Ensure smooth linear action with maximum flow and minimum pressure drop with high-capacity, 45º valve body
- Control pressure from 10 to 1440 psi (60 to 9928 kPa) within ±2 psi (±13.8 kPa) of setpoint
- Safeguard equipment and personnel with positive shutoff (ANSI Class VI) and fail-safe closure upon power loss
- Improve reliability with positive O-ring seal and valve seats that are unaffected by fluid viscosity or pressure drop
- 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
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