MEDIA GUIDE
Glycerin (Glycerol) Pumps
The textbook viscous duty — chemically harmless, mechanically demanding.
The properties that drive the choice
| Hazard profile | none of note |
|---|---|
| Concentration band in our data | any (not banded) |
| In one line | Viscous at ambient temperature (~950 cP at 20°C, much lower warm) — routed to positive displacement hydraulics. |
Which pump families serve it
At a reference duty (20 °C, 10 m³/h, 30 m). Your duty point may move the answer — run it through the tool below; the full report adds the alternatives worth quoting in parallel.
| Primary answer | Gear Pump (positive displacement) | Viscous clean fluids (oils, glycols, resins), ~500–100,000 cP |
|---|---|---|
| Typical wetted materials | Cast Iron, Carbon Steel, Polypropylene (PP), Stainless Steel 304, Stainless Steel 316L | |
Where the boundaries sit
- Viscosity is the whole problem: past the 500 cP line the centrifugal answer fades and positive displacement takes over
- Viscosity collapses with temperature — the pump sized for a cold morning is oversized at noon; state the range
- Glycerin is hygroscopic; water pickup thins the fluid and changes the duty over time
Related reading
Pumping this fluid? The selector on the home page maps your concentration, temperature and duty point to a pump type and wetted materials for this exact medium — free.
Open the tool →