Selection guide

Viscosity, Pulp & Particle Limits

Product data determines how the liquid spreads, releases gas and passes through the discharge path.

01 / Practical selection

Make a viscosity value interpretable

Report the instrument or test method and the temperature. Include shear conditions if known for a product whose viscosity changes with shear. A single value without a method can make two proposals difficult to compare.

For a changing recipe or temperature range, provide more than one measurement where available. Mark estimates clearly; a representative sample may be useful for a difficult product.

02 / Practical selection

Describe particles, not only total solids

State pulp content, the largest particle, typical distribution and whether particles deform or must remain intact. Fibres, seeds and pieces can affect distributor passages and valves differently.

Explain the acceptable effect on texture or particle integrity. These are practical inputs to choosing a product path and pump arrangement.

03 / Practical selection

Review distribution and discharge together

A product must spread enough to expose gas-release area and still leave the vessel under the actual suction and back-pressure conditions. The distributor and the outlet pump should be selected as part of one duty.

When the behaviour is uncertain, observe the actual product in a suitable trial. A catalogue viscosity limit from a different liquid is not a substitute for this review.

Common questions

Viscosity & particles questions

What if we have no viscosity measurement?

Describe the product and operating temperature, identify the missing value and discuss whether a sample or test is appropriate.

Are solids and particles the same selection input?

No. Total solids does not describe particle size, fibres or whether pieces can pass through the intended product path.

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