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Peristaltic (Hose & Tube) Pumps
Peristaltic pumps (hose & tube) excel where other technologies struggle—high viscosity, abrasive slurries, off‑gassing chemicals, shear‑sensitive media, and precise low‑flow dosing. We stock and engineer LMI’s KBL & KML peristaltic dosing pumps for low‑flow chemical feed and Graco (SoloTech) hose pumps for medium‑to‑high flows and pressures. Send your flow, discharge pressure, viscosity, solids %, temperature, and chemistry and we’ll size the right hose compound and drive—often shipping the same day from California, Washington, and Arizona.
Not sure if you need tube vs. hose, what hose elastomer survives your chemistry, or how to control pulsation? Talk to a peristaltic pump engineer—most quotes leave our inbox within one business hour.
Quick Selector: LMI vs. Graco Peristaltic Lines
| Manufacturer / Series | Type | Typical Flow Range* | Max Pressure* | Hose / Tube Materials | Best For |
|---|---|---|---|---|---|
| LMI KBL / KML | Low‑flow peristaltic (tube) dosing | mL/min to low GPH (model‑dependent) | Typically low‑to‑moderate (model‑dependent) | Norprene®, Viton®/FKM, Silicone, PharMed®, etc. | Accurate chemical dosing, off‑gassing fluids, clean liquids |
| Graco SoloTech (and related) | Industrial hose pump (medium–high flow) | Up to ~100 GPM+ (model‑dependent) | Up to ~230 PSI (16 bar) (model‑dependent) | NR, NBR, EPDM, CSM (Hypalon®), FKM, PTFE‑lined (select) | Abrasive slurries, viscous & shear‑sensitive fluids, chemicals |
*Exact capacities/pressures are model‑specific—tell us your duty and we’ll confirm.
Why (and When) Peristaltic Pumps Win
- Handles viscous & abrasive fluids—only the hose/tube touches the fluid
- Self‑priming, dry‑run capable, reversible
- Accurate, repeatable dosing with simple speed control (VFD)
- Seal‑less & leak‑free—ideal for corrosive/toxic fluids
- Low shear for sensitive products (polymers, emulsions, cells)
- Easy maintenance—swap hose/tube; no valves or seals to rebuild
How We Size Peristaltic Pumps (So Your Hose Lasts & Your Setpoint Holds)
1) Flow, Pressure & Pulsation
We match your **max/normal/min flow** and **discharge pressure** to the correct **rotor speed, roller count, and hose ID**—then address **pulsation** with dampeners, accumulator volume, or downstream instrumentation protection if needed.
2) Hose / Tube Material Compatibility
We select from **NR, NBR, EPDM, CSM (Hypalon®), FKM/Viton®, PTFE‑lined, Norprene®, Silicone, PharMed®** based on your **chemical SDS, temperature, and duty cycle**—balancing **chemical resistance, permeability, and flex life**.
3) Viscosity, Solids & Suction Lift
We de‑rate for high viscosity and solids to maintain target flow. Peristaltics are **self‑priming** and can pull significant suction lift; we’ll confirm NPSH isn’t a limiting factor for upstream instrumentation.
4) Duty Cycle, Heat & Hose Life
Continuous duty at high pressure generates heat and shortens hose life. We model **duty cycle, speed, and backpressure**, and recommend **lubricants, cooling, or oversizing** to extend MTBF.
Brand / Series Snapshot (Edit to Your Exact SKUs)
| Brand / Series | Core Strengths | Control Options | Typical Applications |
|---|---|---|---|
| LMI KBL / KML | Low‑flow precision dosing, compact footprint, easy tube swaps | Manual speed, 4–20 mA / pulse (model‑dependent) | Water/wastewater chem feed, pH/ORP control, biocides, lab/bench dosing |
| Graco SoloTech (and related hose pumps) | Medium–high flow and pressure, rugged hose technology, abrasive‑ready | VFD, analog 4–20 mA, digital comms (panel options) | Abrasive slurries, thick polymers, mining/minerals, chemical transfer |
Common Peristaltic Pump Applications
- Water & Wastewater – sodium hypochlorite, polymers, lime slurry, bisulfite
- Chemical Processing – corrosives, off‑gassing fluids, slurries
- Mining & Minerals – tailings, thick slurries, reagents
- Food & Beverage – syrups, flavorings, enzymes (with appropriate hose materials)
- Power / Pulp & Paper – coatings, pigments, dewatering aids
- Pharma / Biotech (low shear, sterile tube sets; consult for USP Class VI)
Parts, Kits & Accessories
- Replacement hoses & tubes (NR, NBR, EPDM, CSM, FKM, Norprene®, Silicone, PharMed®)
- Leak detection sensors, hose failure switches
- Pulsation dampeners, backpressure & relief valves
- Calibration columns, injection quills
- VFDs, panels, 4–20 mA / pulse inputs
- Food / pharma grade sanitary fittings (tri‑clamp), if required
Send your flow, PSI, viscosity, solids %, temp & chemical SDS—quotes usually in < 1 hour.
Peristaltic Pump FAQs
Tube (low‑flow) vs. hose (industrial) peristaltic—what’s the difference?
Tube pumps (e.g., LMI KBL/KML) use small, flexible tubing and target precise, low‑flow chemical dosing. Hose pumps (e.g., Graco SoloTech) use thick reinforced hoses for **higher flows and pressures**, viscous/abrasive fluids, and harsh duty cycles.
How accurate are peristaltic pumps?
Properly specified peristaltics routinely deliver **±1–2%** accuracy. We’ll size speed, hose/tube ID, and backpressure to maintain repeatability across your turndown range.
Can peristaltic pumps run dry?
Yes—peristaltics are inherently **self‑priming and dry‑run capable**. Continuous dry‑run at high pressure or speed generates heat, so we’ll check duty cycle and recommend protections if needed.
What hose/tube material should I choose for my chemical?
It depends on **chemical resistance, temperature, permeability, and flex life**. Common picks are **Norprene®, EPDM, NBR, CSM (Hypalon®), FKM/Viton®, Silicone, or PTFE‑lined**. Send your SDS and we’ll match the best compound.
How do I reduce pulsation in a peristaltic pump system?
We can **slow the speed, add more rollers, use a pulsation dampener, or size downstream instrumentation properly**. Hose length and ID also affect pulsation amplitude.