Seal-free AODD and metering diaphragm pumps for chemical transfer and dosing.
Positive-displacement pumps for thick sludge, polymer and viscous fluids.
Precision metering pumps for coagulant, pH and disinfection duties.
Equations, process design, control and troubleshooting.
Peristaltic (hose) pumps deliver seal-free, gland-free metering and transfer of abrasive, gassing, shear-sensitive and high-solids fluids. The fluid touches only the hose — nothing else — so they dose lime slurry, ferric, polymer and sodium hypochlorite without valves to foul or seals to leak. Flows from a few mL/min to 80 m³/hr.
A peristaltic pump moves fluid by progressively squeezing a reinforced hose or tube with rotating shoes or rollers. The fluid is fully contained within the hose, so there are no valves, seals, glands or diaphragms in contact with the chemical — the single most common cause of dosing failure (fouled check valves and gassing) simply does not exist.
This makes peristaltic pumps the first choice for the fluids that defeat other dosing pumps: lime slurry and other settling/abrasive solids, off-gassing reagents such as sodium hypochlorite and hydrogen peroxide, shear-sensitive matured polymer, and high-viscosity products. Output is purely volumetric — flow is directly proportional to speed and is unaffected by discharge pressure — giving excellent metering accuracy and turndown, and the ability to run dry and self-prime indefinitely.
Peristaltic pumps win exactly where diaphragm metering pumps struggle — gassing, settling and abrasive fluids. Choose by the chemistry, not habit; see the full comparison on dosing pump selection.
Sodium hypochlorite and peroxide off-gas and vapour-lock diaphragm heads. A peristaltic pump has no valves or head to gas-bind — it just keeps metering. See under-dosing.
Settling, abrasive slurries that scour seals and block check valves are contained entirely within a replaceable hose. Ideal for lime dosing.
Gentle, low-shear action preserves matured polymer chains for effective flocculation. See polymer dosing.
Flow is proportional to speed and independent of back-pressure, giving wide, accurate turndown for tight dose control.
Proven across the dosing duties that foul or gas-bind other pump types.
Commonly integrated into the following treatment processes.
Explore complementary pumps and dosing equipment.
Tell us the reagent, flow range, back-pressure and accuracy you need. We will recommend peristaltic, diaphragm or progressive-cavity, size it, and integrate it into a complete dosing system with the right control and injection.
Our expertise spans multiple industries with sector-specific water treatment solutions.