Description: Mounted on acid alkali dosing lines or starch slurry main piping of corn starch washing towers. Receives pH measurement feedback to automatically modulate valve travel, precisely controlling chemical dosing rate or main stream media flow rate. It stabilizes pH set points for tower internal starch slurry and washing water, securing protein separation and starch refining reactions within optimal pH operating window. It mitigates quality defects including reduced starch purity and incomplete protein removal caused by pH excursions and stabilizes washing section end product quality.
Core has. Superior regulating accuracy: with smart valve positioner; rapid response and excellent modulating linearity tight closed-loop pH control with narrow deviation band.
Starch-process-optimized geometry: Anti-clogging, erosion-resistant trim design; unobstructed flow-passages without stagnant dead-spots.
Withstand media carrying fine fibers and starch granules, resisting jamming and fouling. Hygienic food-grade construction: Wetted parts in 304/316L food-grade stainless steel with mirror-polished inner surfaces.
Complying with food-processing-hygiene specifications.
Dependable sealing: Food-grade sealing materials with zero-leak classification remove chemical fugitive emissions and safeguarding process-material and plant-site safety.
Wide adaptability: Pneumatic or electric actuator options compatible with existing DCS automation platforms for corn-starch production lines of all capacities.
Structural composition.
Valve-body assembly: Main flow-housing; straight-through/angle-type body for inline installation within dosing or process piping.
Valve trim (plug & seat): Core flow-regulation elements; throttling-area variation governs throughput; hard-facing with hard alloy optional for enhanced wear resistance.
Valve-stem assembly: Translates actuator motion to plug/trim element.
Actuator: Pneumatic-diaphragm or electric type; converts control-signal input to mechanical valve-stem displacement.
Smart valve positioner: Receives control set-point and precisely positions valve stroke for closed-loop modulation.
Sealing assembly: Food-grade packing and gaskets stem-and-body pressure-tightnessMainstream structural types
1. Pneumatic-diaphragm pH-regulating valve: Compressed-air powered.
Fast response intrinsically safe and explosion-proof. Combined with smart positioner it delivers high-precision modulation.
Industry-preferred solution for pH-control dosing duties in corn-starch washing-sections well-suited for continuous automated-production workflows.
Electric pH-regulating valve: Electrically actuated; no compressed-air infrastructure required, straightforward installation, high control accuracy.
For sites lacking instrument-air supply or pH-regulation stations for small-to-mid-size starch-manufacturing facilities.
Contact Us