Changing Materials; A (Red) And B (Blue) Components - Graco PD44 Operations & Parts List

Important Iscocyanate (ISO) Information

Changing Materials

Changing the material types used in your equipment
requires special attention to avoid equipment damage
and downtime.
• When changing materials, flush the equipment
multiple times to ensure it is thoroughly clean.
• Always clean the fluid inlet strainers after flushing.
• Check with your material manufacturer for
chemical compatibility.
• When changing between epoxies and urethanes
or polyureas, disassemble and clean all fluid
components and change hoses. Epoxies often
have amines on the B (hardener) side. Polyureas
often have amines on the B (resin) side.
A (Red) and B (Blue)
Components
NOTE: Material suppliers can vary in how they refer to
plural component materials.
Be aware that when standing in front of the manifold on
proportioner:
• Component A (Red) is on the left side.
• Component B (Blue) is on the right side.
For all machines:
• The A (Red) side is intended for ISO, hardeners,
and catalysts.
• If one of the materials being used is moisture-
sensitive, that material should always be in the A
(Red) side.
• The B (Blue) side is intended for polyols, resins, and
bases.
NOTE: For machines with material volume ratios other
than 1:1, the higher volume side is typically at the B
(Blue) side.
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NOTICE
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