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Guides / Vendor Deep Dive — Graco

The Pump That Doesn't Quit

One roller. No seals. No babysitting. SoloTech keeps flow moving where every other pump taps out.

Peristaltic drive

Single-roller design — simpler, tougher, fewer wear points.

Zero-seal path

No mechanical seals. No seal kits. No seat leaks.

Long-life hose

4× expected life — extended service windows.

"Graco's best-kept secret. It's never failed us — only solved the hardest problems." — James Riggins
Specifications
Hose Size6–32mm
Flow Range0.2–41 GPM (≈ 0.76–155.2 LPM)
PressureUp to 125 psi (0.9 MPa · 9 bar)
TemperatureUp to 176°F (80°C, hose-dependent)

Build Options

  • Industrial or Hygienic builds
  • AC or Brushless DC (BLDC) motors
  • IEC or NEMA gear reducers

Materials

  • Hose: Nitrile, EPDM, CSM, Natural Rubber, Food-Grade Nitrile
  • Barbs: Stainless, Hastelloy, PVDF, Aluminum

Certifications

  • CE, EC 1935/2004, FDA-compliant food-grade options
  • ATEX: II 2 G Ex h IIB T4 Gb variants
Built-In Engineering Advantages
  1. Single-Roller Design — One compression per revolution, 4× hose life vs. conventional peristaltics.
  2. Self-Priming & Reversible — Moves abrasive/viscous fluids, clears lines, and can run dry safely.
  3. Seal-Less Construction — No seals, valves, or glands: zero leak points & fewer kits.
  4. Full 360° Compression — Constant volumetric accuracy for repeatable dosing & metering.
  5. 125 psi Headroom — Handles thick slurries, polymers, and caustics without cavitation.
  6. Energy-Efficient Drives — BLDC or VFD-AC for precise control with low amp draw.
  7. Modular Mounting — NEMA/IEC, quick lift points, compact footprint.
  8. Safety & Compliance — CE, EC 1935/2004, FDA-compliant, ATEX variants.
SoloTech Lineup
ST10 · AC
Precision Dosing
Flow: 0.2–5 GPM

Lab dosing, NaOCl/pH adjust coagulants, pilot skids

ST23 · AC
The Chem-Feed Workhorse
Flow: 5–15 GPM

Fertigation pH/EC control, polymer/acid/alkali feed

ST25 / ST26 · AC
Slurries & Polymers
Flow: 10–25 GPM

Polymer make-down, lime slurry, viscous/filled fluids

ST30 / ST32 · AC
High-Flow, Plant-Scale
Flow: 20–41 GPM

Mining slurries, process water, CIP/SIP chemicals

LibertyCES stocks and specs 110+ SoloTech configurations, pairing pumps with drives, reducers, hoses, barbs, and controls for maximum system effectiveness.

FAQ

Frequently Asked Questions

What flow range do Graco SoloTech peristaltic pumps cover?

LibertyCES specs the full SoloTech lineup from 6mm to 32mm hose sizes, covering 0.2–41 GPM (roughly 0.76–155.2 LPM) across the ST10 through ST32 model series.

Why does SoloTech last longer than a standard peristaltic pump?

Its single-roller design applies one compression per revolution instead of multiple, delivering roughly 4× the hose life of conventional multi-roller peristaltic pumps, with seal-less construction eliminating seal-kit maintenance entirely.

Can SoloTech pumps run dry or self-prime?

Yes. SoloTech pumps are self-priming and reversible, can move abrasive or viscous fluids, clear lines, and run dry safely without damaging the pump.

What is the maximum pressure and temperature rating for SoloTech?

Up to 125 psi (0.9 MPa / 9 bar) and up to 176°F (80°C), hose-material dependent — enough headroom for thick slurries, polymers, and caustics without cavitation.

Spec Review

Which SoloTech model fits your chemistry and duty?