APCO Level Controllers HSI1010RP

APCO float-less, non-electric level controls are specifically designed for automatic ON/OFF operation of air-operated double diaphragm (AODD) pumps. These controllers activate or deactivate the pump when the liquid level reaches a preset point. They are suitable for applications with pumps in suction lift, flooded suction, or submerged conditions.

Built from high-quality materials and rigorously tested, model HSI1010RP level controllers are known for their durability, ensuring reliable AODD pump operation even in challenging environments with foam, sludge, or solids. For deep sump applications or remote sensing needs, a two-piece unit is available. Since these controllers are entirely pneumatic, they are also safe for use in ATEX zones.

APCO is now officially part of H&P Technologies, Inc., a comprehensive distributor and service centre for leading brands in hydraulic, pneumatic, lubrication and fluid dispense, material handling, and DC electric assembly tools, components, and engineered systems.

Advantages
Benefits
Specifications
Options
Applications
Reliable on-off control of AODD pumps conserves costly compressed air and protects pump components
Eliminates the continuous use of AODD pumps and connected instruments when they are not needed
No moving parts in contact with the liquid being monitored means no wear parts and lesser downtime
The absence of float allows effective pump control in foamy and turbulent areas where other controls fail
Non-electric design means eliminates the need for costly wirings, making installation simple
Fully pneumatic configuration ensures explosion resistance, making it suitable for hazardous areas
Features remote 4” x 23” PVC sensing tube and a Buna diaphragm, eliminating the need for quieting well or baffle
Precise flow control enhances AODD pump performance and reduces energy waste
Consistent flow rates improve product quality
Smooth, controlled operation minimises wear and tear, leading to lower maintenance costs
Controls AODD pumps of any brand
Controls filtered or lubricated compressed air @ 3.45 – 8.62 bar
Air supply connection: 1/2" NPT
Pump connection: 1/2" NPT
Sense tube connection: 3/8” tube fitting
Valve type - air pilot-operated
Sensing tube material (wetted part): Mild steel is standard; Option for PVC or 316 SS construction
Diaphragm material: Buna N is standard; Option for Teflon
Shallow sump
Submerged pump applications
Deep sump
Elevated tank filling

Level ControllerHow It works

As water rises in the sensing tube, the pressure generated lifts the diaphragm in the upper section of the valve head. Once the full differential pressure is reached, the pilot valve activates, controlling the main 1/2" valve to start or stop the pump.

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