Thayer Scale
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PF-18L-S Powder Feeder

Medium capacity feeder up to
14,500 lbs/hr @ 50 pcf.

Feeds difficult powders such as Cabosil®, TiO2 and other pigments without bridging or clogging hopper, trough or screw.
Exclusive trough design defeats flooding by dissipating kinetic energy of material stream at initial fill.
Agitator and screw overwind prevent material compaction or arching over screw flights.
Totally accessible interior assures easy and complete cleaning, eliminating contamination problems when changing materials. (Download PDF)
Force Measurement Suspension (FMSS) is self-aligning to gravity and weighs only the material - not the hopper or feeder - for second to second sensitivity. Thayer Scale "Flexure Plate" provides outstanding benefits. Mass counterbalanced electronic Weigh Scale features high precision measurement, exceptional durability and excellent long term stability.

Normal adjustable operating range
is a 20:1 turndown capability from
maximum feed rate.
Special ranges are available.

Proven ability to feed difficult powders

PF-18L Screw Feeder overcomes both flooding and clogging problems associated with difficult-to-handle powders. Unique feeder trough effectively de-aerates and contains the powder at the initial fill cycle to prevent flooding. An independently driven agitator maintains optimum material conditioning while screw speed can vary to control feed rate. Material does not build up within the trough or tube, preventing binding or erratic feed.

Unique THAYER® weight sensing technology provides isolation from all force vectors except material weight for superior sensitivity and accuracy.

Optional rotating trough & hopper speeds material change-out, makes cleaning easier. Ideal for self-empty remaining material away from process. For both screw and vibratory feeder models
See video of Rotating Hopper (.avi @ 5.1MB)

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Visit Thayer Scale for continuous weighing and feeding equipment for dry solids conveying and processing.