Thayer Volumetric Feeders

Proven ability to feed difficult powders the Models “MSF”, “PFM” and “PF” Volumetric Powder Feeders controls both flooding and bridging problems associated with difficult-to-handle powders.

Unique feeder trough effectively de-aerates and confines the powder at the initial fill cycle to prevent flooding. Independently driven agitator maintains optimum material conditioning while screw speed can vary to control flow rate. Feeder disassembles easily for total cleaning, eliminating contamination problems when changing materials.

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MSF Volumetric Screw Feeder

THAYER Model No.
MSF
Approx Feed Rate Range
(lbs/hr) based on 50 lb/ft³)
0.25 – 60
Standard Hopper Extension Capacity
*(liquid ft³)
1.0 – 3.0
Trough Capacity
*(liquid ft³)
0.5
Available Screw Sizes (in)
0.375″ – 0.5″ – 0.625″ – 1″ – 1.5″ – 2″
Typical Materials Handled
CANDLE WAX, RICE POWDER, SALT, FLOUR, LITHIUM ION POWDER, GROUND BIOMASS, VITAMIN ADDITIVE, SEASONING

Powder Feeder™ Model PFM-S

THAYER Model No.
PFM-S POWDER™ FEEDER
Approx Feed Rate Range
(lbs/hr) based on 50 lb/ft3)
20 – 1,250
Standard Hopper Extension Capacity
*(liquid ft³)
1.0 – 9.75
Trough Capacity
*(liquid ft³)
1
Available Screw Sizes (in)
1″ – 1.5″ – 2″
Typical Materials Handled
GRAPHITE POWDER, ZINC OXIDE, KAOLIN CLAY, GUAR GUM, PLASTIC ADDITIVE, QUICK LIME, PIGMENT, COPPER POWDER, RUBBER GRANULES, TSP, WHEY POWDER

Powder Feeder™ Model PF-S-4

THAYER Model No.
PF-S-4 POWDER™ FEEDER
Approx Feed Rate Range
(lbs/hr) based on 50 lb/ft³)
20 – 10,000
Standard Hopper Extension Capacity
*(liquid ft³)
1.0 – 9.75
Trough Capacity
*(liquid ft³)
2.5
Available Screw Sizes (in)
1″ – 1.5″ – 2″ – 3″ – 4″
Typical Materials Handled
DIATOMACEOUS EARTH, POWDERED MILK ADDITIVE, CALCIUM CARBONATE, SALT,  SPICE, ADDITIVE POWDERS, TiO2, STEARATE, BORAX, MICROCEL

Powder Feeder™ Model PF-S-6

THAYER Model No.
PF-S-6 POWDER™ FEEDER
Approx Feed Rate Range
(lbs/hr) based on 50 lb/ft³)
3,700 – 30,000
Standard Hopper Extension Capacity
*(liquid ft³)
1.0 – 25
Trough Capacity
*(liquid ft³)
2.5
Available Screw Sizes (in)
3″ – 4″ -6″
Typical Materials Handled
COCOA POWDER, FLOUR, RICE, IMPACT MODIFIER, PP PELLETS, CRUMB RUBBER, SUGAR, ADVAWAX, CALCIUM STEARATE, ALMONDS, TOFFEE CHIPS